Merge remote-tracking branch 'origin/master' into fix-and-ci-static-builds

This commit is contained in:
Matthew Bauer 2020-07-30 14:59:57 -05:00
commit d7ffe327ae
200 changed files with 10484 additions and 3361 deletions

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@ -1,6 +1,7 @@
((c++-mode . ( ((c++-mode . (
(c-file-style . "k&r") (c-file-style . "k&r")
(c-basic-offset . 4) (c-basic-offset . 4)
(c-block-comment-prefix . " ")
(indent-tabs-mode . nil) (indent-tabs-mode . nil)
(tab-width . 4) (tab-width . 4)
(show-trailing-whitespace . t) (show-trailing-whitespace . t)

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@ -10,5 +10,8 @@ jobs:
runs-on: ${{ matrix.os }} runs-on: ${{ matrix.os }}
steps: steps:
- uses: actions/checkout@v2 - uses: actions/checkout@v2
with:
fetch-depth: 0
- uses: cachix/install-nix-action@v10 - uses: cachix/install-nix-action@v10
- run: nix-build release.nix --arg nix '{ outPath = ./.; revCount = 123; shortRev = "abcdefgh"; }' --arg systems '[ builtins.currentSystem ]' -A installerScript -A perlBindings #- run: nix flake check
- run: nix-build -A checks.$(if [[ `uname` = Linux ]]; then echo x86_64-linux; else echo x86_64-darwin; fi)

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@ -1 +1 @@
2.4 3.0

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@ -11,6 +11,7 @@ makefiles = \
src/resolve-system-dependencies/local.mk \ src/resolve-system-dependencies/local.mk \
scripts/local.mk \ scripts/local.mk \
corepkgs/local.mk \ corepkgs/local.mk \
misc/bash/local.mk \
misc/systemd/local.mk \ misc/systemd/local.mk \
misc/launchd/local.mk \ misc/launchd/local.mk \
misc/upstart/local.mk \ misc/upstart/local.mk \

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@ -19,6 +19,7 @@ LIBLZMA_LIBS = @LIBLZMA_LIBS@
OPENSSL_LIBS = @OPENSSL_LIBS@ OPENSSL_LIBS = @OPENSSL_LIBS@
PACKAGE_NAME = @PACKAGE_NAME@ PACKAGE_NAME = @PACKAGE_NAME@
PACKAGE_VERSION = @PACKAGE_VERSION@ PACKAGE_VERSION = @PACKAGE_VERSION@
SHELL = @bash@
SODIUM_LIBS = @SODIUM_LIBS@ SODIUM_LIBS = @SODIUM_LIBS@
SQLITE3_LIBS = @SQLITE3_LIBS@ SQLITE3_LIBS = @SQLITE3_LIBS@
bash = @bash@ bash = @bash@

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@ -12,7 +12,7 @@ for more details.
On Linux and macOS the easiest way to Install Nix is to run the following shell command On Linux and macOS the easiest way to Install Nix is to run the following shell command
(as a user other than root): (as a user other than root):
``` ```console
$ curl -L https://nixos.org/nix/install | sh $ curl -L https://nixos.org/nix/install | sh
``` ```
@ -20,27 +20,8 @@ Information on additional installation methods is available on the [Nix download
## Building And Developing ## Building And Developing
### Building Nix See our [Hacking guide](https://hydra.nixos.org/job/nix/master/build.x86_64-linux/latest/download-by-type/doc/manual#chap-hacking) in our manual for instruction on how to
build nix from source with nix-build or how to get a development environment.
You can build Nix using one of the targets provided by [release.nix](./release.nix):
```
$ nix-build ./release.nix -A build.aarch64-linux
$ nix-build ./release.nix -A build.x86_64-darwin
$ nix-build ./release.nix -A build.i686-linux
$ nix-build ./release.nix -A build.x86_64-linux
```
### Development Environment
You can use the provided `shell.nix` to get a working development environment:
```
$ nix-shell
$ ./bootstrap.sh
$ ./configure
$ make
```
## Additional Resources ## Additional Resources

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@ -123,6 +123,7 @@ AC_PATH_PROG(flex, flex, false)
AC_PATH_PROG(bison, bison, false) AC_PATH_PROG(bison, bison, false)
AC_PATH_PROG(dot, dot) AC_PATH_PROG(dot, dot)
AC_PATH_PROG(lsof, lsof, lsof) AC_PATH_PROG(lsof, lsof, lsof)
NEED_PROG(jq, jq)
AC_SUBST(coreutils, [$(dirname $(type -p cat))]) AC_SUBST(coreutils, [$(dirname $(type -p cat))])

3
default.nix Normal file
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@ -0,0 +1,3 @@
(import (fetchTarball https://github.com/edolstra/flake-compat/archive/master.tar.gz) {
src = ./.;
}).defaultNix

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@ -1,119 +0,0 @@
<section xmlns="http://docbook.org/ns/docbook"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:xi="http://www.w3.org/2001/XInclude"
version="5.0"
xml:id='sec-builder-syntax'>
<title>Builder Syntax</title>
<example xml:id='ex-hello-builder'><title>Build script for GNU Hello
(<filename>builder.sh</filename>)</title>
<programlisting>
source $stdenv/setup <co xml:id='ex-hello-builder-co-1' />
PATH=$perl/bin:$PATH <co xml:id='ex-hello-builder-co-2' />
tar xvfz $src <co xml:id='ex-hello-builder-co-3' />
cd hello-*
./configure --prefix=$out <co xml:id='ex-hello-builder-co-4' />
make <co xml:id='ex-hello-builder-co-5' />
make install</programlisting>
</example>
<para><xref linkend='ex-hello-builder' /> shows the builder referenced
from Hello's Nix expression (stored in
<filename>pkgs/applications/misc/hello/ex-1/builder.sh</filename>).
The builder can actually be made a lot shorter by using the
<emphasis>generic builder</emphasis> functions provided by
<varname>stdenv</varname>, but here we write out the build steps to
elucidate what a builder does. It performs the following
steps:</para>
<calloutlist>
<callout arearefs='ex-hello-builder-co-1'>
<para>When Nix runs a builder, it initially completely clears the
environment (except for the attributes declared in the
derivation). For instance, the <envar>PATH</envar> variable is
empty<footnote><para>Actually, it's initialised to
<filename>/path-not-set</filename> to prevent Bash from setting it
to a default value.</para></footnote>. This is done to prevent
undeclared inputs from being used in the build process. If for
example the <envar>PATH</envar> contained
<filename>/usr/bin</filename>, then you might accidentally use
<filename>/usr/bin/gcc</filename>.</para>
<para>So the first step is to set up the environment. This is
done by calling the <filename>setup</filename> script of the
standard environment. The environment variable
<envar>stdenv</envar> points to the location of the standard
environment being used. (It wasn't specified explicitly as an
attribute in <xref linkend='ex-hello-nix' />, but
<varname>mkDerivation</varname> adds it automatically.)</para>
</callout>
<callout arearefs='ex-hello-builder-co-2'>
<para>Since Hello needs Perl, we have to make sure that Perl is in
the <envar>PATH</envar>. The <envar>perl</envar> environment
variable points to the location of the Perl package (since it
was passed in as an attribute to the derivation), so
<filename><replaceable>$perl</replaceable>/bin</filename> is the
directory containing the Perl interpreter.</para>
</callout>
<callout arearefs='ex-hello-builder-co-3'>
<para>Now we have to unpack the sources. The
<varname>src</varname> attribute was bound to the result of
fetching the Hello source tarball from the network, so the
<envar>src</envar> environment variable points to the location in
the Nix store to which the tarball was downloaded. After
unpacking, we <command>cd</command> to the resulting source
directory.</para>
<para>The whole build is performed in a temporary directory
created in <varname>/tmp</varname>, by the way. This directory is
removed after the builder finishes, so there is no need to clean
up the sources afterwards. Also, the temporary directory is
always newly created, so you don't have to worry about files from
previous builds interfering with the current build.</para>
</callout>
<callout arearefs='ex-hello-builder-co-4'>
<para>GNU Hello is a typical Autoconf-based package, so we first
have to run its <filename>configure</filename> script. In Nix
every package is stored in a separate location in the Nix store,
for instance
<filename>/nix/store/9a54ba97fb71b65fda531012d0443ce2-hello-2.1.1</filename>.
Nix computes this path by cryptographically hashing all attributes
of the derivation. The path is passed to the builder through the
<envar>out</envar> environment variable. So here we give
<filename>configure</filename> the parameter
<literal>--prefix=$out</literal> to cause Hello to be installed in
the expected location.</para>
</callout>
<callout arearefs='ex-hello-builder-co-5'>
<para>Finally we build Hello (<literal>make</literal>) and install
it into the location specified by <envar>out</envar>
(<literal>make install</literal>).</para>
</callout>
</calloutlist>
<para>If you are wondering about the absence of error checking on the
result of various commands called in the builder: this is because the
shell script is evaluated with Bash's <option>-e</option> option,
which causes the script to be aborted if any command fails without an
error check.</para>
</section>

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@ -7,15 +7,34 @@
<para>This section provides some notes on how to hack on Nix. To get <para>This section provides some notes on how to hack on Nix. To get
the latest version of Nix from GitHub: the latest version of Nix from GitHub:
<screen> <screen>
$ git clone git://github.com/NixOS/nix.git $ git clone https://github.com/NixOS/nix.git
$ cd nix $ cd nix
</screen> </screen>
</para> </para>
<para>To build it and its dependencies: <para>To build Nix for the current operating system/architecture use
<screen> <screen>
$ nix-build release.nix -A build.x86_64-linux $ nix-build
</screen> </screen>
or if you have a flakes-enabled nix:
<screen>
$ nix build
</screen>
This will build <literal>defaultPackage</literal> attribute defined in the <literal>flake.nix</literal> file.
To build for other platforms add one of the following suffixes to it: aarch64-linux,
i686-linux, x86_64-darwin, x86_64-linux.
i.e.
<screen>
nix-build -A defaultPackage.x86_64-linux
</screen>
</para> </para>
<para>To build all dependencies and start a shell in which all <para>To build all dependencies and start a shell in which all
@ -27,13 +46,27 @@ $ nix-shell
To build Nix itself in this shell: To build Nix itself in this shell:
<screen> <screen>
[nix-shell]$ ./bootstrap.sh [nix-shell]$ ./bootstrap.sh
[nix-shell]$ configurePhase [nix-shell]$ ./configure $configureFlags
[nix-shell]$ make [nix-shell]$ make -j $NIX_BUILD_CORES
</screen> </screen>
To install it in <literal>$(pwd)/inst</literal> and test it: To install it in <literal>$(pwd)/inst</literal> and test it:
<screen> <screen>
[nix-shell]$ make install [nix-shell]$ make install
[nix-shell]$ make installcheck [nix-shell]$ make installcheck
[nix-shell]$ ./inst/bin/nix --version
nix (Nix) 2.4
</screen>
If you have a flakes-enabled nix you can replace:
<screen>
$ nix-shell
</screen>
by:
<screen>
$ nix develop
</screen> </screen>
</para> </para>

26
flake.lock Normal file
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@ -0,0 +1,26 @@
{
"nodes": {
"nixpkgs": {
"locked": {
"lastModified": 1591633336,
"narHash": "sha256-oVXv4xAnDJB03LvZGbC72vSVlIbbJr8tpjEW5o/Fdek=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "70717a337f7ae4e486ba71a500367cad697e5f09",
"type": "github"
},
"original": {
"id": "nixpkgs",
"ref": "nixos-20.03-small",
"type": "indirect"
}
},
"root": {
"inputs": {
"nixpkgs": "nixpkgs"
}
}
},
"root": "root",
"version": 6
}

497
flake.nix Normal file
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@ -0,0 +1,497 @@
{
description = "The purely functional package manager";
inputs.nixpkgs.url = "nixpkgs/nixos-20.03-small";
outputs = { self, nixpkgs }:
let
version = builtins.readFile ./.version + versionSuffix;
versionSuffix =
if officialRelease
then ""
else "pre${builtins.substring 0 8 (self.lastModifiedDate or self.lastModified)}_${self.shortRev or "dirty"}";
officialRelease = false;
systems = [ "x86_64-linux" "i686-linux" "x86_64-darwin" "aarch64-linux" ];
forAllSystems = f: nixpkgs.lib.genAttrs systems (system: f system);
# Memoize nixpkgs for different platforms for efficiency.
nixpkgsFor = forAllSystems (system:
import nixpkgs {
inherit system;
overlays = [ self.overlay ];
}
);
commonDeps = pkgs: with pkgs; rec {
# Use "busybox-sandbox-shell" if present,
# if not (legacy) fallback and hope it's sufficient.
sh = pkgs.busybox-sandbox-shell or (busybox.override {
useMusl = true;
enableStatic = true;
enableMinimal = true;
extraConfig = ''
CONFIG_FEATURE_FANCY_ECHO y
CONFIG_FEATURE_SH_MATH y
CONFIG_FEATURE_SH_MATH_64 y
CONFIG_ASH y
CONFIG_ASH_OPTIMIZE_FOR_SIZE y
CONFIG_ASH_ALIAS y
CONFIG_ASH_BASH_COMPAT y
CONFIG_ASH_CMDCMD y
CONFIG_ASH_ECHO y
CONFIG_ASH_GETOPTS y
CONFIG_ASH_INTERNAL_GLOB y
CONFIG_ASH_JOB_CONTROL y
CONFIG_ASH_PRINTF y
CONFIG_ASH_TEST y
'';
});
configureFlags =
lib.optionals stdenv.isLinux [
"--with-sandbox-shell=${sh}/bin/busybox"
];
nativeBuildDeps =
[
buildPackages.bison
buildPackages.flex
buildPackages.libxml2
buildPackages.libxslt
buildPackages.docbook5
buildPackages.docbook_xsl_ns
buildPackages.autoreconfHook
buildPackages.pkgconfig
# Tests
buildPackages.git
buildPackages.mercurial
];
buildDeps =
[ bison
flex
libxml2
libxslt
docbook5
docbook_xsl_ns
autoconf-archive
autoreconfHook
curl
bzip2 xz brotli zlib editline
openssl pkgconfig sqlite
libarchive
boost
(if lib.versionAtLeast lib.version "20.03pre"
then nlohmann_json
else nlohmann_json.override { multipleHeaders = true; })
nlohmann_json
gmock
]
++ lib.optionals stdenv.isLinux [libseccomp utillinuxMinimal]
++ lib.optional (stdenv.isLinux || stdenv.isDarwin) libsodium;
awsDeps = lib.optional (stdenv.isLinux || stdenv.isDarwin)
(aws-sdk-cpp.override {
apis = ["s3" "transfer"];
customMemoryManagement = false;
});
propagatedDeps =
[ (boehmgc.override { enableLargeConfig = true; })
];
perlDeps =
[ perl
perlPackages.DBDSQLite
];
};
in {
# A Nixpkgs overlay that overrides the 'nix' and
# 'nix.perl-bindings' packages.
overlay = final: prev: {
nix = with final; with commonDeps pkgs; (stdenv.mkDerivation {
name = "nix-${version}";
src = self;
VERSION_SUFFIX = versionSuffix;
outputs = [ "out" "dev" "doc" ];
nativeBuildInputs = nativeBuildDeps;
buildInputs = buildDeps ++ awsDeps;
propagatedBuildInputs = propagatedDeps;
preConfigure =
''
# Copy libboost_context so we don't get all of Boost in our closure.
# https://github.com/NixOS/nixpkgs/issues/45462
mkdir -p $out/lib
cp -pd ${boost}/lib/{libboost_context*,libboost_thread*,libboost_system*} $out/lib
rm -f $out/lib/*.a
${lib.optionalString stdenv.isLinux ''
chmod u+w $out/lib/*.so.*
patchelf --set-rpath $out/lib:${stdenv.cc.cc.lib}/lib $out/lib/libboost_thread.so.*
''}
'';
configureFlags = configureFlags ++
[ "--sysconfdir=/etc" ];
enableParallelBuilding = true;
makeFlags = "profiledir=$(out)/etc/profile.d";
doCheck = true;
installFlags = "sysconfdir=$(out)/etc";
postInstall = ''
mkdir -p $doc/nix-support
echo "doc manual $doc/share/doc/nix/manual" >> $doc/nix-support/hydra-build-products
'';
doInstallCheck = true;
installCheckFlags = "sysconfdir=$(out)/etc";
separateDebugInfo = true;
}) // {
perl-bindings = with final; stdenv.mkDerivation {
name = "nix-perl-${version}";
src = self;
buildInputs =
[ autoconf-archive
autoreconfHook
nix
curl
bzip2
xz
pkgconfig
pkgs.perl
boost
]
++ lib.optional (stdenv.isLinux || stdenv.isDarwin) libsodium;
configureFlags = ''
--with-dbi=${perlPackages.DBI}/${pkgs.perl.libPrefix}
--with-dbd-sqlite=${perlPackages.DBDSQLite}/${pkgs.perl.libPrefix}
'';
enableParallelBuilding = true;
postUnpack = "sourceRoot=$sourceRoot/perl";
};
};
};
hydraJobs = {
# Binary package for various platforms.
build = nixpkgs.lib.genAttrs systems (system: self.packages.${system}.nix);
build-static = nixpkgs.lib.genAttrs systems (system: self.packages.${system}.nix-static);
# Perl bindings for various platforms.
perlBindings = nixpkgs.lib.genAttrs systems (system: self.packages.${system}.nix.perl-bindings);
# Binary tarball for various platforms, containing a Nix store
# with the closure of 'nix' package, and the second half of
# the installation script.
binaryTarball = nixpkgs.lib.genAttrs systems (system:
with nixpkgsFor.${system};
let
installerClosureInfo = closureInfo { rootPaths = [ nix cacert ]; };
in
runCommand "nix-binary-tarball-${version}"
{ #nativeBuildInputs = lib.optional (system != "aarch64-linux") shellcheck;
meta.description = "Distribution-independent Nix bootstrap binaries for ${system}";
}
''
cp ${installerClosureInfo}/registration $TMPDIR/reginfo
substitute ${./scripts/install-nix-from-closure.sh} $TMPDIR/install \
--subst-var-by nix ${nix} \
--subst-var-by cacert ${cacert}
substitute ${./scripts/install-darwin-multi-user.sh} $TMPDIR/install-darwin-multi-user.sh \
--subst-var-by nix ${nix} \
--subst-var-by cacert ${cacert}
substitute ${./scripts/install-systemd-multi-user.sh} $TMPDIR/install-systemd-multi-user.sh \
--subst-var-by nix ${nix} \
--subst-var-by cacert ${cacert}
substitute ${./scripts/install-multi-user.sh} $TMPDIR/install-multi-user \
--subst-var-by nix ${nix} \
--subst-var-by cacert ${cacert}
if type -p shellcheck; then
# SC1090: Don't worry about not being able to find
# $nix/etc/profile.d/nix.sh
shellcheck --exclude SC1090 $TMPDIR/install
shellcheck $TMPDIR/install-darwin-multi-user.sh
shellcheck $TMPDIR/install-systemd-multi-user.sh
# SC1091: Don't panic about not being able to source
# /etc/profile
# SC2002: Ignore "useless cat" "error", when loading
# .reginfo, as the cat is a much cleaner
# implementation, even though it is "useless"
# SC2116: Allow ROOT_HOME=$(echo ~root) for resolving
# root's home directory
shellcheck --external-sources \
--exclude SC1091,SC2002,SC2116 $TMPDIR/install-multi-user
fi
chmod +x $TMPDIR/install
chmod +x $TMPDIR/install-darwin-multi-user.sh
chmod +x $TMPDIR/install-systemd-multi-user.sh
chmod +x $TMPDIR/install-multi-user
dir=nix-${version}-${system}
fn=$out/$dir.tar.xz
mkdir -p $out/nix-support
echo "file binary-dist $fn" >> $out/nix-support/hydra-build-products
tar cvfJ $fn \
--owner=0 --group=0 --mode=u+rw,uga+r \
--absolute-names \
--hard-dereference \
--transform "s,$TMPDIR/install,$dir/install," \
--transform "s,$TMPDIR/reginfo,$dir/.reginfo," \
--transform "s,$NIX_STORE,$dir/store,S" \
$TMPDIR/install $TMPDIR/install-darwin-multi-user.sh \
$TMPDIR/install-systemd-multi-user.sh \
$TMPDIR/install-multi-user $TMPDIR/reginfo \
$(cat ${installerClosureInfo}/store-paths)
'');
# The first half of the installation script. This is uploaded
# to https://nixos.org/nix/install. It downloads the binary
# tarball for the user's system and calls the second half of the
# installation script.
installerScript =
with nixpkgsFor.x86_64-linux;
runCommand "installer-script"
{ buildInputs = [ nix ];
}
''
mkdir -p $out/nix-support
substitute ${./scripts/install.in} $out/install \
${pkgs.lib.concatMapStrings
(system: "--replace '@binaryTarball_${system}@' $(nix --experimental-features nix-command hash-file --base16 --type sha256 ${self.hydraJobs.binaryTarball.${system}}/*.tar.xz) ")
[ "x86_64-linux" "i686-linux" "x86_64-darwin" "aarch64-linux" ]
} \
--replace '@nixVersion@' ${version}
echo "file installer $out/install" >> $out/nix-support/hydra-build-products
'';
# Line coverage analysis.
coverage =
with nixpkgsFor.x86_64-linux;
with commonDeps pkgs;
releaseTools.coverageAnalysis {
name = "nix-coverage-${version}";
src = self;
enableParallelBuilding = true;
nativeBuildInputs = nativeBuildDeps;
buildInputs = buildDeps ++ propagatedDeps ++ awsDeps;
dontInstall = false;
doInstallCheck = true;
lcovFilter = [ "*/boost/*" "*-tab.*" ];
# We call `dot', and even though we just use it to
# syntax-check generated dot files, it still requires some
# fonts. So provide those.
FONTCONFIG_FILE = texFunctions.fontsConf;
# To test building without precompiled headers.
makeFlagsArray = [ "PRECOMPILE_HEADERS=0" ];
};
# System tests.
tests.remoteBuilds = import ./tests/remote-builds.nix {
system = "x86_64-linux";
inherit nixpkgs;
inherit (self) overlay;
};
tests.nix-copy-closure = import ./tests/nix-copy-closure.nix {
system = "x86_64-linux";
inherit nixpkgs;
inherit (self) overlay;
};
tests.githubFlakes = (import ./tests/github-flakes.nix rec {
system = "x86_64-linux";
inherit nixpkgs;
inherit (self) overlay;
});
tests.setuid = nixpkgs.lib.genAttrs
["i686-linux" "x86_64-linux"]
(system:
import ./tests/setuid.nix rec {
inherit nixpkgs system;
inherit (self) overlay;
});
# Test whether the binary tarball works in an Ubuntu system.
tests.binaryTarball =
with nixpkgsFor.x86_64-linux;
vmTools.runInLinuxImage (runCommand "nix-binary-tarball-test"
{ diskImage = vmTools.diskImages.ubuntu1204x86_64;
}
''
set -x
useradd -m alice
su - alice -c 'tar xf ${self.hydraJobs.binaryTarball.x86_64-linux}/*.tar.*'
mkdir /dest-nix
mount -o bind /dest-nix /nix # Provide a writable /nix.
chown alice /nix
su - alice -c '_NIX_INSTALLER_TEST=1 ./nix-*/install'
su - alice -c 'nix-store --verify'
su - alice -c 'PAGER= nix-store -qR ${self.hydraJobs.build.x86_64-linux}'
# Check whether 'nix upgrade-nix' works.
cat > /tmp/paths.nix <<EOF
{
x86_64-linux = "${self.hydraJobs.build.x86_64-linux}";
}
EOF
su - alice -c 'nix --experimental-features nix-command upgrade-nix -vvv --nix-store-paths-url file:///tmp/paths.nix'
(! [ -L /home/alice/.profile-1-link ])
su - alice -c 'PAGER= nix-store -qR ${self.hydraJobs.build.x86_64-linux}'
mkdir -p $out/nix-support
touch $out/nix-support/hydra-build-products
umount /nix
'');
/*
# Check whether we can still evaluate all of Nixpkgs.
tests.evalNixpkgs =
import (nixpkgs + "/pkgs/top-level/make-tarball.nix") {
# FIXME: fix pkgs/top-level/make-tarball.nix in NixOS to not require a revCount.
inherit nixpkgs;
pkgs = nixpkgsFor.x86_64-linux;
officialRelease = false;
};
# Check whether we can still evaluate NixOS.
tests.evalNixOS =
with nixpkgsFor.x86_64-linux;
runCommand "eval-nixos" { buildInputs = [ nix ]; }
''
export NIX_STATE_DIR=$TMPDIR
nix-instantiate ${nixpkgs}/nixos/release-combined.nix -A tested --dry-run \
--arg nixpkgs '{ outPath = ${nixpkgs}; revCount = 123; shortRev = "abcdefgh"; }'
touch $out
'';
*/
};
checks = forAllSystems (system: {
binaryTarball = self.hydraJobs.binaryTarball.${system};
build-static = self.hydraJobs.build-static.${system};
perlBindings = self.hydraJobs.perlBindings.${system};
});
packages = forAllSystems (system: {
inherit (nixpkgsFor.${system}) nix;
nix-static = let
nixpkgs = nixpkgsFor.${system}.pkgsStatic;
in with commonDeps nixpkgs; nixpkgs.stdenv.mkDerivation {
name = "nix-${version}";
src = self;
VERSION_SUFFIX = versionSuffix;
outputs = [ "out" "dev" "doc" ];
nativeBuildInputs = nativeBuildDeps;
buildInputs = buildDeps ++ propagatedDeps;
configureFlags = [ "--sysconfdir=/etc" ];
enableParallelBuilding = true;
makeFlags = "profiledir=$(out)/etc/profile.d";
doCheck = true;
installFlags = "sysconfdir=$(out)/etc";
postInstall = ''
mkdir -p $doc/nix-support
echo "doc manual $doc/share/doc/nix/manual" >> $doc/nix-support/hydra-build-products
'';
doInstallCheck = true;
installCheckFlags = "sysconfdir=$(out)/etc";
stripAllList = ["bin"];
};
});
defaultPackage = forAllSystems (system: self.packages.${system}.nix);
devShell = forAllSystems (system:
with nixpkgsFor.${system};
with commonDeps pkgs;
stdenv.mkDerivation {
name = "nix";
nativeBuildInputs = nativeBuildDeps;
buildInputs = buildDeps ++ propagatedDeps ++ awsDeps ++ perlDeps;
inherit configureFlags;
enableParallelBuilding = true;
installFlags = "sysconfdir=$(out)/etc";
shellHook =
''
export prefix=$(pwd)/inst
configureFlags+=" --prefix=$prefix"
PKG_CONFIG_PATH=$prefix/lib/pkgconfig:$PKG_CONFIG_PATH
PATH=$prefix/bin:$PATH
unset PYTHONPATH
'';
});
};
}

View file

@ -8,7 +8,7 @@ clean-files += Makefile.config
GLOBAL_CXXFLAGS += -Wno-deprecated-declarations GLOBAL_CXXFLAGS += -Wno-deprecated-declarations
$(foreach i, config.h $(call rwildcard, src/lib*, *.hh), \ $(foreach i, config.h $(wildcard src/lib*/*.hh), \
$(eval $(call install-file-in, $(i), $(includedir)/nix, 0644))) $(eval $(call install-file-in, $(i), $(includedir)/nix, 0644)))
$(GCH) $(PCH): src/libutil/util.hh config.h $(GCH) $(PCH): src/libutil/util.hh config.h

View file

@ -170,15 +170,5 @@ $channelsBucket->add_key(
chdir("/home/eelco/Dev/nix-pristine") or die; chdir("/home/eelco/Dev/nix-pristine") or die;
system("git remote update origin") == 0 or die; system("git remote update origin") == 0 or die;
system("git tag --force --sign $version $nixRev -m 'Tagging release $version'") == 0 or die; system("git tag --force --sign $version $nixRev -m 'Tagging release $version'") == 0 or die;
system("git push --tags") == 0 or die;
# Update the website. system("git push --force-with-lease origin $nixRev:refs/heads/latest-release") == 0 or die;
my $siteDir = "/home/eelco/Dev/nixos-homepage-pristine";
system("cd $siteDir && git pull") == 0 or die;
write_file("$siteDir/nix-release.tt",
"[%-\n" .
"latestNixVersion = \"$version\"\n" .
"-%]\n");
system("cd $siteDir && git commit -a -m 'Nix $version released'") == 0 or die;

19
misc/bash/completion.sh Normal file
View file

@ -0,0 +1,19 @@
function _complete_nix {
local -a words
local cword cur
_get_comp_words_by_ref -n ':=&' words cword cur
local have_type
while IFS= read -r line; do
if [[ -z $have_type ]]; then
have_type=1
if [[ $line = filenames ]]; then
compopt -o filenames
fi
else
COMPREPLY+=("$line")
fi
done < <(NIX_GET_COMPLETIONS=$cword "${words[@]}")
__ltrim_colon_completions "$cur"
}
complete -F _complete_nix nix

1
misc/bash/local.mk Normal file
View file

@ -0,0 +1 @@
$(eval $(call install-file-as, $(d)/completion.sh, $(datarootdir)/bash-completion/completions/nix, 0644))

View file

@ -21,13 +21,13 @@ clean-files += $(GCH) $(PCH)
ifeq ($(PRECOMPILE_HEADERS), 1) ifeq ($(PRECOMPILE_HEADERS), 1)
ifeq ($(CXX), g++) ifeq ($(findstring g++,$(CXX)), g++)
GLOBAL_CXXFLAGS_PCH += -include $(buildprefix)precompiled-headers.h -Winvalid-pch GLOBAL_CXXFLAGS_PCH += -include $(buildprefix)precompiled-headers.h -Winvalid-pch
GLOBAL_ORDER_AFTER += $(GCH) GLOBAL_ORDER_AFTER += $(GCH)
else ifeq ($(CXX), clang++) else ifeq ($(findstring clang++,$(CXX)), clang++)
GLOBAL_CXXFLAGS_PCH += -include-pch $(PCH) -Winvalid-pch GLOBAL_CXXFLAGS_PCH += -include-pch $(PCH) -Winvalid-pch

28
mk/run_test.sh Executable file
View file

@ -0,0 +1,28 @@
#!/bin/sh
set -u
red=""
green=""
yellow=""
normal=""
post_run_msg="ran test $1..."
if [ -t 1 ]; then
red=""
green=""
yellow=""
normal=""
fi
(cd $(dirname $1) && env ${TESTS_ENVIRONMENT} init.sh 2>/dev/null > /dev/null)
log="$(cd $(dirname $1) && env ${TESTS_ENVIRONMENT} $(basename $1) 2>&1)"
status=$?
if [ $status -eq 0 ]; then
echo "$post_run_msg [${green}PASS$normal]"
elif [ $status -eq 99 ]; then
echo "$post_run_msg [${yellow}SKIP$normal]"
else
echo "$post_run_msg [${red}FAIL$normal]"
echo "$log" | sed 's/^/ /'
exit "$status"
fi

View file

@ -1,45 +1,15 @@
# Run program $1 as part of make installcheck. # Run program $1 as part of make installcheck.
test-deps =
define run-install-test define run-install-test
installcheck: $1 installcheck: $1.test
_installcheck-list += $1 .PHONY: $1.test
$1.test: $1 $(test-deps)
@env TEST_NAME=$(notdir $(basename $1)) TESTS_ENVIRONMENT="$(tests-environment)" mk/run_test.sh $1
endef endef
# Color code from https://unix.stackexchange.com/a/10065
installcheck:
@total=0; failed=0; \
red=""; \
green=""; \
yellow=""; \
normal=""; \
if [ -t 1 ]; then \
red=""; \
green=""; \
yellow=""; \
normal=""; \
fi; \
for i in $(_installcheck-list); do \
total=$$((total + 1)); \
printf "running test $$i..."; \
log="$$(cd $$(dirname $$i) && $(tests-environment) $$(basename $$i) 2>&1)"; \
status=$$?; \
if [ $$status -eq 0 ]; then \
echo " [$${green}PASS$$normal]"; \
elif [ $$status -eq 99 ]; then \
echo " [$${yellow}SKIP$$normal]"; \
else \
echo " [$${red}FAIL$$normal]"; \
echo "$$log" | sed 's/^/ /'; \
failed=$$((failed + 1)); \
fi; \
done; \
if [ "$$failed" != 0 ]; then \
echo "$${red}$$failed out of $$total tests failed $$normal"; \
exit 1; \
else \
echo "$${green}All tests succeeded$$normal"; \
fi
.PHONY: check installcheck .PHONY: check installcheck

View file

@ -80,7 +80,7 @@ SV * queryReferences(char * path)
SV * queryPathHash(char * path) SV * queryPathHash(char * path)
PPCODE: PPCODE:
try { try {
auto s = store()->queryPathInfo(store()->parseStorePath(path))->narHash.to_string(Base32, true); auto s = store()->queryPathInfo(store()->parseStorePath(path))->narHash->to_string(Base32, true);
XPUSHs(sv_2mortal(newSVpv(s.c_str(), 0))); XPUSHs(sv_2mortal(newSVpv(s.c_str(), 0)));
} catch (Error & e) { } catch (Error & e) {
croak("%s", e.what()); croak("%s", e.what());
@ -106,7 +106,7 @@ SV * queryPathInfo(char * path, int base32)
XPUSHs(&PL_sv_undef); XPUSHs(&PL_sv_undef);
else else
XPUSHs(sv_2mortal(newSVpv(store()->printStorePath(*info->deriver).c_str(), 0))); XPUSHs(sv_2mortal(newSVpv(store()->printStorePath(*info->deriver).c_str(), 0)));
auto s = info->narHash.to_string(base32 ? Base32 : Base16, true); auto s = info->narHash->to_string(base32 ? Base32 : Base16, true);
XPUSHs(sv_2mortal(newSVpv(s.c_str(), 0))); XPUSHs(sv_2mortal(newSVpv(s.c_str(), 0)));
mXPUSHi(info->registrationTime); mXPUSHi(info->registrationTime);
mXPUSHi(info->narSize); mXPUSHi(info->narSize);
@ -182,7 +182,7 @@ void importPaths(int fd, int dontCheckSigs)
PPCODE: PPCODE:
try { try {
FdSource source(fd); FdSource source(fd);
store()->importPaths(source, nullptr, dontCheckSigs ? NoCheckSigs : CheckSigs); store()->importPaths(source, dontCheckSigs ? NoCheckSigs : CheckSigs);
} catch (Error & e) { } catch (Error & e) {
croak("%s", e.what()); croak("%s", e.what());
} }
@ -304,7 +304,10 @@ SV * derivationFromPath(char * drvPath)
HV * outputs = newHV(); HV * outputs = newHV();
for (auto & i : drv.outputs) for (auto & i : drv.outputs)
hv_store(outputs, i.first.c_str(), i.first.size(), newSVpv(store()->printStorePath(i.second.path).c_str(), 0), 0); hv_store(
outputs, i.first.c_str(), i.first.size(),
newSVpv(store()->printStorePath(i.second.path(*store(), drv.name)).c_str(), 0),
0);
hv_stores(hash, "outputs", newRV((SV *) outputs)); hv_stores(hash, "outputs", newRV((SV *) outputs));
AV * inputDrvs = newAV(); AV * inputDrvs = newAV();

View file

@ -1,89 +0,0 @@
{ pkgs, enableStatic }:
with pkgs;
rec {
# Use "busybox-sandbox-shell" if present,
# if not (legacy) fallback and hope it's sufficient.
sh = pkgs.busybox-sandbox-shell or (busybox.override {
useMusl = true;
enableStatic = true;
enableMinimal = true;
extraConfig = ''
CONFIG_FEATURE_FANCY_ECHO y
CONFIG_FEATURE_SH_MATH y
CONFIG_FEATURE_SH_MATH_64 y
CONFIG_ASH y
CONFIG_ASH_OPTIMIZE_FOR_SIZE y
CONFIG_ASH_ALIAS y
CONFIG_ASH_BASH_COMPAT y
CONFIG_ASH_CMDCMD y
CONFIG_ASH_ECHO y
CONFIG_ASH_GETOPTS y
CONFIG_ASH_INTERNAL_GLOB y
CONFIG_ASH_JOB_CONTROL y
CONFIG_ASH_PRINTF y
CONFIG_ASH_TEST y
'';
});
configureFlags =
lib.optionals (!enableStatic && stdenv.isLinux) [
"--with-sandbox-shell=${sh}/bin/busybox"
];
nativeBuildDeps =
[
buildPackages.bison
buildPackages.flex
buildPackages.libxml2
buildPackages.libxslt
buildPackages.docbook5
buildPackages.docbook_xsl_ns
buildPackages.autoreconfHook
buildPackages.pkgconfig
# Tests
buildPackages.git
buildPackages.mercurial
buildPackages.ipfs
];
buildDeps =
[ autoreconfHook
autoconf-archive
curl
bzip2 xz brotli zlib editline
openssl sqlite
libarchive
boost
nlohmann_json
gmock
]
++ lib.optionals stdenv.isLinux [libseccomp utillinuxMinimal]
++ lib.optional (stdenv.isLinux || stdenv.isDarwin) libsodium
++ lib.optional (!enableStatic && (stdenv.isLinux || stdenv.isDarwin))
((aws-sdk-cpp.override {
apis = ["s3" "transfer"];
customMemoryManagement = false;
}).overrideDerivation (args: {
/*
patches = args.patches or [] ++ [ (fetchpatch {
url = https://github.com/edolstra/aws-sdk-cpp/commit/3e07e1f1aae41b4c8b340735ff9e8c735f0c063f.patch;
sha256 = "1pij0v449p166f9l29x7ppzk8j7g9k9mp15ilh5qxp29c7fnvxy2";
}) ];
*/
}));
propagatedDeps =
[ (boehmgc.override { enableLargeConfig = true; })
];
perlDeps =
[ perl
perlPackages.DBDSQLite
];
}

View file

@ -1,313 +0,0 @@
{ nix ? builtins.fetchGit ./.
, nixpkgs ? builtins.fetchTarball https://github.com/NixOS/nixpkgs/archive/nixos-20.03-small.tar.gz
, officialRelease ? false
, systems ? [ "x86_64-linux" "i686-linux" "x86_64-darwin" "aarch64-linux" ]
}:
let
pkgs = import nixpkgs { system = builtins.currentSystem or "x86_64-linux"; };
version =
builtins.readFile ./.version
+ (if officialRelease then "" else "pre${toString nix.revCount}_${nix.shortRev}");
buildFun = pkgs: enableStatic:
with pkgs; with import ./release-common.nix { inherit pkgs enableStatic; };
stdenv.mkDerivation {
name = "nix-${version}";
src = nix;
outputs = [ "out" "dev" "doc" ];
buildInputs = buildDeps;
nativeBuildInputs = nativeBuildDeps;
propagatedBuildInputs = propagatedDeps;
preConfigure =
lib.optionalString (!enableStatic) ''
# Copy libboost_context so we don't get all of Boost in our closure.
# https://github.com/NixOS/nixpkgs/issues/45462
mkdir -p $out/lib
cp -pd ${boost}/lib/{libboost_context*,libboost_thread*,libboost_system*} $out/lib
rm -f $out/lib/*.a
${lib.optionalString stdenv.isLinux ''
chmod u+w $out/lib/*.so.*
patchelf --set-rpath $out/lib:${stdenv.cc.cc.lib}/lib $out/lib/libboost_thread.so.*
''}
(cd perl; autoreconf --install --force --verbose)
'';
configureFlags = configureFlags ++
[ "--sysconfdir=/etc" ];
dontUpdateAutotoolsGnuConfigScripts = true;
enableParallelBuilding = true;
makeFlags = [ "profiledir=$(out)/etc/profile.d" "PRECOMPILE_HEADERS=0" ];
installFlags = "sysconfdir=$(out)/etc";
postInstall = ''
mkdir -p $doc/nix-support
echo "doc manual $doc/share/doc/nix/manual" >> $doc/nix-support/hydra-build-products
'';
doCheck = true;
doInstallCheck = true;
installCheckFlags = "sysconfdir=$(out)/etc";
separateDebugInfo = !enableStatic;
stripAllList = ["bin"];
};
jobs = rec {
build-static = pkgs.lib.genAttrs systems (system:
buildFun (import nixpkgs { inherit system; }).pkgsStatic true);
build = pkgs.lib.genAttrs systems (system:
buildFun (import nixpkgs { inherit system; }) false);
perlBindings = pkgs.lib.genAttrs systems (system:
let pkgs = import nixpkgs { inherit system; }; in with pkgs;
releaseTools.nixBuild {
name = "nix-perl-${version}";
src = nix;
buildInputs =
[ autoconf-archive
autoreconfHook
jobs.build.${system}
curl
bzip2
xz
pkgconfig
pkgs.perl
boost
]
++ lib.optional (stdenv.isLinux || stdenv.isDarwin) libsodium;
configureFlags = ''
--with-dbi=${perlPackages.DBI}/${pkgs.perl.libPrefix}
--with-dbd-sqlite=${perlPackages.DBDSQLite}/${pkgs.perl.libPrefix}
'';
enableParallelBuilding = true;
postUnpack = "sourceRoot=$sourceRoot/perl";
});
binaryTarball = pkgs.lib.genAttrs systems (system:
with import nixpkgs { inherit system; };
let
toplevel = builtins.getAttr system jobs.build;
installerClosureInfo = closureInfo { rootPaths = [ toplevel cacert ]; };
in
runCommand "nix-binary-tarball-${version}"
{ #nativeBuildInputs = lib.optional (system != "aarch64-linux") shellcheck;
meta.description = "Distribution-independent Nix bootstrap binaries for ${system}";
}
''
cp ${installerClosureInfo}/registration $TMPDIR/reginfo
cp ${./scripts/create-darwin-volume.sh} $TMPDIR/create-darwin-volume.sh
substitute ${./scripts/install-nix-from-closure.sh} $TMPDIR/install \
--subst-var-by nix ${toplevel} \
--subst-var-by cacert ${cacert}
substitute ${./scripts/install-darwin-multi-user.sh} $TMPDIR/install-darwin-multi-user.sh \
--subst-var-by nix ${toplevel} \
--subst-var-by cacert ${cacert}
substitute ${./scripts/install-systemd-multi-user.sh} $TMPDIR/install-systemd-multi-user.sh \
--subst-var-by nix ${toplevel} \
--subst-var-by cacert ${cacert}
substitute ${./scripts/install-multi-user.sh} $TMPDIR/install-multi-user \
--subst-var-by nix ${toplevel} \
--subst-var-by cacert ${cacert}
if type -p shellcheck; then
# SC1090: Don't worry about not being able to find
# $nix/etc/profile.d/nix.sh
shellcheck --exclude SC1090 $TMPDIR/install
shellcheck $TMPDIR/create-darwin-volume.sh
shellcheck $TMPDIR/install-darwin-multi-user.sh
shellcheck $TMPDIR/install-systemd-multi-user.sh
# SC1091: Don't panic about not being able to source
# /etc/profile
# SC2002: Ignore "useless cat" "error", when loading
# .reginfo, as the cat is a much cleaner
# implementation, even though it is "useless"
# SC2116: Allow ROOT_HOME=$(echo ~root) for resolving
# root's home directory
shellcheck --external-sources \
--exclude SC1091,SC2002,SC2116 $TMPDIR/install-multi-user
fi
chmod +x $TMPDIR/install
chmod +x $TMPDIR/create-darwin-volume.sh
chmod +x $TMPDIR/install-darwin-multi-user.sh
chmod +x $TMPDIR/install-systemd-multi-user.sh
chmod +x $TMPDIR/install-multi-user
dir=nix-${version}-${system}
fn=$out/$dir.tar.xz
mkdir -p $out/nix-support
echo "file binary-dist $fn" >> $out/nix-support/hydra-build-products
tar cvfJ $fn \
--owner=0 --group=0 --mode=u+rw,uga+r \
--absolute-names \
--hard-dereference \
--transform "s,$TMPDIR/install,$dir/install," \
--transform "s,$TMPDIR/create-darwin-volume.sh,$dir/create-darwin-volume.sh," \
--transform "s,$TMPDIR/reginfo,$dir/.reginfo," \
--transform "s,$NIX_STORE,$dir/store,S" \
$TMPDIR/install \
$TMPDIR/create-darwin-volume.sh \
$TMPDIR/install-darwin-multi-user.sh \
$TMPDIR/install-systemd-multi-user.sh \
$TMPDIR/install-multi-user \
$TMPDIR/reginfo \
$(cat ${installerClosureInfo}/store-paths)
'');
coverage =
with pkgs;
with import ./release-common.nix { inherit pkgs; enableStatic = false; };
releaseTools.coverageAnalysis {
name = "nix-coverage-${version}";
src = nix;
enableParallelBuilding = true;
nativeBuildInputs = nativeBuildDeps;
buildInputs = buildDeps ++ propagatedDeps;
dontInstall = false;
doInstallCheck = true;
lcovFilter = [ "*/boost/*" "*-tab.*" ];
# We call `dot', and even though we just use it to
# syntax-check generated dot files, it still requires some
# fonts. So provide those.
FONTCONFIG_FILE = texFunctions.fontsConf;
# To test building without precompiled headers.
makeFlagsArray = [ "PRECOMPILE_HEADERS=0" ];
};
# System tests.
tests.remoteBuilds = (import ./tests/remote-builds.nix rec {
inherit nixpkgs;
nix = build.x86_64-linux; system = "x86_64-linux";
});
tests.nix-copy-closure = (import ./tests/nix-copy-closure.nix rec {
inherit nixpkgs;
nix = build.x86_64-linux; system = "x86_64-linux";
});
tests.setuid = pkgs.lib.genAttrs
["i686-linux" "x86_64-linux"]
(system:
import ./tests/setuid.nix rec {
inherit nixpkgs;
nix = build.${system}; inherit system;
});
tests.binaryTarball =
with import nixpkgs { system = "x86_64-linux"; };
vmTools.runInLinuxImage (runCommand "nix-binary-tarball-test"
{ diskImage = vmTools.diskImages.ubuntu1204x86_64;
}
''
set -x
useradd -m alice
su - alice -c 'tar xf ${binaryTarball.x86_64-linux}/*.tar.*'
mkdir /dest-nix
mount -o bind /dest-nix /nix # Provide a writable /nix.
chown alice /nix
su - alice -c '_NIX_INSTALLER_TEST=1 ./nix-*/install'
su - alice -c 'nix-store --verify'
su - alice -c 'PAGER= nix-store -qR ${build.x86_64-linux}'
# Check whether 'nix upgrade-nix' works.
cat > /tmp/paths.nix <<EOF
{
x86_64-linux = "${build.x86_64-linux}";
}
EOF
su - alice -c 'nix --experimental-features nix-command upgrade-nix -vvv --nix-store-paths-url file:///tmp/paths.nix'
(! [ -L /home/alice/.profile-1-link ])
su - alice -c 'PAGER= nix-store -qR ${build.x86_64-linux}'
mkdir -p $out/nix-support
touch $out/nix-support/hydra-build-products
umount /nix
''); # */
/*
tests.evalNixpkgs =
import (nixpkgs + "/pkgs/top-level/make-tarball.nix") {
inherit nixpkgs;
inherit pkgs;
nix = build.x86_64-linux;
officialRelease = false;
};
tests.evalNixOS =
pkgs.runCommand "eval-nixos" { buildInputs = [ build.x86_64-linux ]; }
''
export NIX_STATE_DIR=$TMPDIR
nix-instantiate ${nixpkgs}/nixos/release-combined.nix -A tested --dry-run \
--arg nixpkgs '{ outPath = ${nixpkgs}; revCount = 123; shortRev = "abcdefgh"; }'
touch $out
'';
*/
installerScript =
pkgs.runCommand "installer-script"
{ buildInputs = [ build.${builtins.currentSystem or "x86_64-linux"} ]; }
''
mkdir -p $out/nix-support
substitute ${./scripts/install.in} $out/install \
${pkgs.lib.concatMapStrings
(system: "--replace '@binaryTarball_${system}@' $(nix --experimental-features nix-command hash-file --base16 --type sha256 ${binaryTarball.${system}}/*.tar.xz) ")
systems
} \
--replace '@nixVersion@' ${version}
echo "file installer $out/install" >> $out/nix-support/hydra-build-products
'';
};
in jobs

View file

@ -207,7 +207,7 @@ if [ -z "$NIX_INSTALLER_NO_MODIFY_PROFILE" ]; then
if [ -w "$fn" ]; then if [ -w "$fn" ]; then
if ! grep -q "$p" "$fn"; then if ! grep -q "$p" "$fn"; then
echo "modifying $fn..." >&2 echo "modifying $fn..." >&2
echo "if [ -e $p ]; then . $p; fi # added by Nix installer" >> "$fn" echo -e "\nif [ -e $p ]; then . $p; fi # added by Nix installer" >> "$fn"
fi fi
added=1 added=1
break break
@ -218,7 +218,7 @@ if [ -z "$NIX_INSTALLER_NO_MODIFY_PROFILE" ]; then
if [ -w "$fn" ]; then if [ -w "$fn" ]; then
if ! grep -q "$p" "$fn"; then if ! grep -q "$p" "$fn"; then
echo "modifying $fn..." >&2 echo "modifying $fn..." >&2
echo "if [ -e $p ]; then . $p; fi # added by Nix installer" >> "$fn" echo -e "\nif [ -e $p ]; then . $p; fi # added by Nix installer" >> "$fn"
fi fi
added=1 added=1
break break

View file

@ -1,27 +1,3 @@
{ useClang ? false, enableStatic ? false }: (import (fetchTarball https://github.com/edolstra/flake-compat/archive/master.tar.gz) {
src = ./.;
with import (builtins.fetchTarball https://github.com/NixOS/nixpkgs/archive/nixos-20.03-small.tar.gz) {}; }).shellNix
with import ./release-common.nix { inherit pkgs enableStatic; };
(if useClang then clangStdenv else stdenv).mkDerivation {
name = "nix";
nativeBuildInputs = nativeBuildDeps;
buildInputs = buildDeps ++ propagatedDeps ++ perlDeps;
inherit configureFlags;
enableParallelBuilding = true;
installFlags = "sysconfdir=$(out)/etc";
shellHook =
''
export prefix=$(pwd)/inst
configureFlags+=" --prefix=$prefix"
PKG_CONFIG_PATH=$prefix/lib/pkgconfig:$PKG_CONFIG_PATH
PATH=$prefix/bin:$PATH
'';
}

View file

@ -33,7 +33,7 @@ std::string escapeUri(std::string uri)
static string currentLoad; static string currentLoad;
static AutoCloseFD openSlotLock(const Machine & m, unsigned long long slot) static AutoCloseFD openSlotLock(const Machine & m, uint64_t slot)
{ {
return openLockFile(fmt("%s/%s-%d", currentLoad, escapeUri(m.storeUri), slot), true); return openLockFile(fmt("%s/%s-%d", currentLoad, escapeUri(m.storeUri), slot), true);
} }
@ -119,7 +119,7 @@ static int _main(int argc, char * * argv)
bool rightType = false; bool rightType = false;
Machine * bestMachine = nullptr; Machine * bestMachine = nullptr;
unsigned long long bestLoad = 0; uint64_t bestLoad = 0;
for (auto & m : machines) { for (auto & m : machines) {
debug("considering building on remote machine '%s'", m.storeUri); debug("considering building on remote machine '%s'", m.storeUri);
@ -130,8 +130,8 @@ static int _main(int argc, char * * argv)
m.mandatoryMet(requiredFeatures)) { m.mandatoryMet(requiredFeatures)) {
rightType = true; rightType = true;
AutoCloseFD free; AutoCloseFD free;
unsigned long long load = 0; uint64_t load = 0;
for (unsigned long long slot = 0; slot < m.maxJobs; ++slot) { for (uint64_t slot = 0; slot < m.maxJobs; ++slot) {
auto slotLock = openSlotLock(m, slot); auto slotLock = openSlotLock(m, slot);
if (lockFile(slotLock.get(), ltWrite, false)) { if (lockFile(slotLock.get(), ltWrite, false)) {
if (!free) { if (!free) {

View file

@ -130,7 +130,7 @@ Pos findDerivationFilename(EvalState & state, Value & v, std::string what)
Symbol file = state.symbols.create(filename); Symbol file = state.symbols.create(filename);
return { file, lineno, 0 }; return { foFile, file, lineno, 0 };
} }

View file

@ -78,7 +78,7 @@ public:
if (!a) if (!a)
throw Error({ throw Error({
.hint = hintfmt("attribute '%s' missing", name), .hint = hintfmt("attribute '%s' missing", name),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
return *a; return *a;

View file

@ -4,6 +4,8 @@
#include "util.hh" #include "util.hh"
#include "eval.hh" #include "eval.hh"
#include "fetchers.hh" #include "fetchers.hh"
#include "registry.hh"
#include "flake/flakeref.hh"
#include "store-api.hh" #include "store-api.hh"
namespace nix { namespace nix {
@ -31,6 +33,27 @@ MixEvalArgs::MixEvalArgs()
.labels = {"path"}, .labels = {"path"},
.handler = {[&](std::string s) { searchPath.push_back(s); }} .handler = {[&](std::string s) { searchPath.push_back(s); }}
}); });
addFlag({
.longName = "impure",
.description = "allow access to mutable paths and repositories",
.handler = {[&]() {
evalSettings.pureEval = false;
}},
});
addFlag({
.longName = "override-flake",
.description = "override a flake registry value",
.labels = {"original-ref", "resolved-ref"},
.handler = {[&](std::string _from, std::string _to) {
auto from = parseFlakeRef(_from, absPath("."));
auto to = parseFlakeRef(_to, absPath("."));
fetchers::Attrs extraAttrs;
if (to.subdir != "") extraAttrs["dir"] = to.subdir;
fetchers::overrideRegistry(from.input, to.input, extraAttrs);
}}
});
} }
Bindings * MixEvalArgs::getAutoArgs(EvalState & state) Bindings * MixEvalArgs::getAutoArgs(EvalState & state)
@ -53,7 +76,7 @@ Path lookupFileArg(EvalState & state, string s)
if (isUri(s)) { if (isUri(s)) {
return state.store->toRealPath( return state.store->toRealPath(
fetchers::downloadTarball( fetchers::downloadTarball(
state.store, resolveUri(s), "source", false).storePath); state.store, resolveUri(s), "source", false).first.storePath);
} else if (s.size() > 2 && s.at(0) == '<' && s.at(s.size() - 1) == '>') { } else if (s.size() > 2 && s.at(0) == '<' && s.at(s.size() - 1) == '>') {
Path p = s.substr(1, s.size() - 2); Path p = s.substr(1, s.size() - 2);
return state.findFile(p); return state.findFile(p);

616
src/libexpr/eval-cache.cc Normal file
View file

@ -0,0 +1,616 @@
#include "eval-cache.hh"
#include "sqlite.hh"
#include "eval.hh"
#include "eval-inline.hh"
#include "store-api.hh"
namespace nix::eval_cache {
static const char * schema = R"sql(
create table if not exists Attributes (
parent integer not null,
name text,
type integer not null,
value text,
context text,
primary key (parent, name)
);
)sql";
struct AttrDb
{
std::atomic_bool failed{false};
struct State
{
SQLite db;
SQLiteStmt insertAttribute;
SQLiteStmt insertAttributeWithContext;
SQLiteStmt queryAttribute;
SQLiteStmt queryAttributes;
std::unique_ptr<SQLiteTxn> txn;
};
std::unique_ptr<Sync<State>> _state;
AttrDb(const Hash & fingerprint)
: _state(std::make_unique<Sync<State>>())
{
auto state(_state->lock());
Path cacheDir = getCacheDir() + "/nix/eval-cache-v2";
createDirs(cacheDir);
Path dbPath = cacheDir + "/" + fingerprint.to_string(Base16, false) + ".sqlite";
state->db = SQLite(dbPath);
state->db.isCache();
state->db.exec(schema);
state->insertAttribute.create(state->db,
"insert or replace into Attributes(parent, name, type, value) values (?, ?, ?, ?)");
state->insertAttributeWithContext.create(state->db,
"insert or replace into Attributes(parent, name, type, value, context) values (?, ?, ?, ?, ?)");
state->queryAttribute.create(state->db,
"select rowid, type, value, context from Attributes where parent = ? and name = ?");
state->queryAttributes.create(state->db,
"select name from Attributes where parent = ?");
state->txn = std::make_unique<SQLiteTxn>(state->db);
}
~AttrDb()
{
try {
auto state(_state->lock());
if (!failed)
state->txn->commit();
state->txn.reset();
} catch (...) {
ignoreException();
}
}
template<typename F>
AttrId doSQLite(F && fun)
{
if (failed) return 0;
try {
return fun();
} catch (SQLiteError &) {
ignoreException();
failed = true;
return 0;
}
}
AttrId setAttrs(
AttrKey key,
const std::vector<Symbol> & attrs)
{
return doSQLite([&]()
{
auto state(_state->lock());
state->insertAttribute.use()
(key.first)
(key.second)
(AttrType::FullAttrs)
(0, false).exec();
AttrId rowId = state->db.getLastInsertedRowId();
assert(rowId);
for (auto & attr : attrs)
state->insertAttribute.use()
(rowId)
(attr)
(AttrType::Placeholder)
(0, false).exec();
return rowId;
});
}
AttrId setString(
AttrKey key,
std::string_view s,
const char * * context = nullptr)
{
return doSQLite([&]()
{
auto state(_state->lock());
if (context) {
std::string ctx;
for (const char * * p = context; *p; ++p) {
if (p != context) ctx.push_back(' ');
ctx.append(*p);
}
state->insertAttributeWithContext.use()
(key.first)
(key.second)
(AttrType::String)
(s)
(ctx).exec();
} else {
state->insertAttribute.use()
(key.first)
(key.second)
(AttrType::String)
(s).exec();
}
return state->db.getLastInsertedRowId();
});
}
AttrId setBool(
AttrKey key,
bool b)
{
return doSQLite([&]()
{
auto state(_state->lock());
state->insertAttribute.use()
(key.first)
(key.second)
(AttrType::Bool)
(b ? 1 : 0).exec();
return state->db.getLastInsertedRowId();
});
}
AttrId setPlaceholder(AttrKey key)
{
return doSQLite([&]()
{
auto state(_state->lock());
state->insertAttribute.use()
(key.first)
(key.second)
(AttrType::Placeholder)
(0, false).exec();
return state->db.getLastInsertedRowId();
});
}
AttrId setMissing(AttrKey key)
{
return doSQLite([&]()
{
auto state(_state->lock());
state->insertAttribute.use()
(key.first)
(key.second)
(AttrType::Missing)
(0, false).exec();
return state->db.getLastInsertedRowId();
});
}
AttrId setMisc(AttrKey key)
{
return doSQLite([&]()
{
auto state(_state->lock());
state->insertAttribute.use()
(key.first)
(key.second)
(AttrType::Misc)
(0, false).exec();
return state->db.getLastInsertedRowId();
});
}
AttrId setFailed(AttrKey key)
{
return doSQLite([&]()
{
auto state(_state->lock());
state->insertAttribute.use()
(key.first)
(key.second)
(AttrType::Failed)
(0, false).exec();
return state->db.getLastInsertedRowId();
});
}
std::optional<std::pair<AttrId, AttrValue>> getAttr(
AttrKey key,
SymbolTable & symbols)
{
auto state(_state->lock());
auto queryAttribute(state->queryAttribute.use()(key.first)(key.second));
if (!queryAttribute.next()) return {};
auto rowId = (AttrType) queryAttribute.getInt(0);
auto type = (AttrType) queryAttribute.getInt(1);
switch (type) {
case AttrType::Placeholder:
return {{rowId, placeholder_t()}};
case AttrType::FullAttrs: {
// FIXME: expensive, should separate this out.
std::vector<Symbol> attrs;
auto queryAttributes(state->queryAttributes.use()(rowId));
while (queryAttributes.next())
attrs.push_back(symbols.create(queryAttributes.getStr(0)));
return {{rowId, attrs}};
}
case AttrType::String: {
std::vector<std::pair<Path, std::string>> context;
if (!queryAttribute.isNull(3))
for (auto & s : tokenizeString<std::vector<std::string>>(queryAttribute.getStr(3), ";"))
context.push_back(decodeContext(s));
return {{rowId, string_t{queryAttribute.getStr(2), context}}};
}
case AttrType::Bool:
return {{rowId, queryAttribute.getInt(2) != 0}};
case AttrType::Missing:
return {{rowId, missing_t()}};
case AttrType::Misc:
return {{rowId, misc_t()}};
case AttrType::Failed:
return {{rowId, failed_t()}};
default:
throw Error("unexpected type in evaluation cache");
}
}
};
static std::shared_ptr<AttrDb> makeAttrDb(const Hash & fingerprint)
{
try {
return std::make_shared<AttrDb>(fingerprint);
} catch (SQLiteError &) {
ignoreException();
return nullptr;
}
}
EvalCache::EvalCache(
std::optional<std::reference_wrapper<const Hash>> useCache,
EvalState & state,
RootLoader rootLoader)
: db(useCache ? makeAttrDb(*useCache) : nullptr)
, state(state)
, rootLoader(rootLoader)
{
}
Value * EvalCache::getRootValue()
{
if (!value) {
debug("getting root value");
value = allocRootValue(rootLoader());
}
return *value;
}
std::shared_ptr<AttrCursor> EvalCache::getRoot()
{
return std::make_shared<AttrCursor>(ref(shared_from_this()), std::nullopt);
}
AttrCursor::AttrCursor(
ref<EvalCache> root,
Parent parent,
Value * value,
std::optional<std::pair<AttrId, AttrValue>> && cachedValue)
: root(root), parent(parent), cachedValue(std::move(cachedValue))
{
if (value)
_value = allocRootValue(value);
}
AttrKey AttrCursor::getKey()
{
if (!parent)
return {0, root->state.sEpsilon};
if (!parent->first->cachedValue) {
parent->first->cachedValue = root->db->getAttr(
parent->first->getKey(), root->state.symbols);
assert(parent->first->cachedValue);
}
return {parent->first->cachedValue->first, parent->second};
}
Value & AttrCursor::getValue()
{
if (!_value) {
if (parent) {
auto & vParent = parent->first->getValue();
root->state.forceAttrs(vParent);
auto attr = vParent.attrs->get(parent->second);
if (!attr)
throw Error("attribute '%s' is unexpectedly missing", getAttrPathStr());
_value = allocRootValue(attr->value);
} else
_value = allocRootValue(root->getRootValue());
}
return **_value;
}
std::vector<Symbol> AttrCursor::getAttrPath() const
{
if (parent) {
auto attrPath = parent->first->getAttrPath();
attrPath.push_back(parent->second);
return attrPath;
} else
return {};
}
std::vector<Symbol> AttrCursor::getAttrPath(Symbol name) const
{
auto attrPath = getAttrPath();
attrPath.push_back(name);
return attrPath;
}
std::string AttrCursor::getAttrPathStr() const
{
return concatStringsSep(".", getAttrPath());
}
std::string AttrCursor::getAttrPathStr(Symbol name) const
{
return concatStringsSep(".", getAttrPath(name));
}
Value & AttrCursor::forceValue()
{
debug("evaluating uncached attribute %s", getAttrPathStr());
auto & v = getValue();
try {
root->state.forceValue(v);
} catch (EvalError &) {
debug("setting '%s' to failed", getAttrPathStr());
if (root->db)
cachedValue = {root->db->setFailed(getKey()), failed_t()};
throw;
}
if (root->db && (!cachedValue || std::get_if<placeholder_t>(&cachedValue->second))) {
if (v.type == tString)
cachedValue = {root->db->setString(getKey(), v.string.s, v.string.context), v.string.s};
else if (v.type == tPath)
cachedValue = {root->db->setString(getKey(), v.path), v.path};
else if (v.type == tBool)
cachedValue = {root->db->setBool(getKey(), v.boolean), v.boolean};
else if (v.type == tAttrs)
; // FIXME: do something?
else
cachedValue = {root->db->setMisc(getKey()), misc_t()};
}
return v;
}
std::shared_ptr<AttrCursor> AttrCursor::maybeGetAttr(Symbol name)
{
if (root->db) {
if (!cachedValue)
cachedValue = root->db->getAttr(getKey(), root->state.symbols);
if (cachedValue) {
if (auto attrs = std::get_if<std::vector<Symbol>>(&cachedValue->second)) {
for (auto & attr : *attrs)
if (attr == name)
return std::make_shared<AttrCursor>(root, std::make_pair(shared_from_this(), name));
return nullptr;
} else if (std::get_if<placeholder_t>(&cachedValue->second)) {
auto attr = root->db->getAttr({cachedValue->first, name}, root->state.symbols);
if (attr) {
if (std::get_if<missing_t>(&attr->second))
return nullptr;
else if (std::get_if<failed_t>(&attr->second))
throw EvalError("cached failure of attribute '%s'", getAttrPathStr(name));
else
return std::make_shared<AttrCursor>(root,
std::make_pair(shared_from_this(), name), nullptr, std::move(attr));
}
// Incomplete attrset, so need to fall thru and
// evaluate to see whether 'name' exists
} else
return nullptr;
//throw TypeError("'%s' is not an attribute set", getAttrPathStr());
}
}
auto & v = forceValue();
if (v.type != tAttrs)
return nullptr;
//throw TypeError("'%s' is not an attribute set", getAttrPathStr());
auto attr = v.attrs->get(name);
if (!attr) {
if (root->db) {
if (!cachedValue)
cachedValue = {root->db->setPlaceholder(getKey()), placeholder_t()};
root->db->setMissing({cachedValue->first, name});
}
return nullptr;
}
std::optional<std::pair<AttrId, AttrValue>> cachedValue2;
if (root->db) {
if (!cachedValue)
cachedValue = {root->db->setPlaceholder(getKey()), placeholder_t()};
cachedValue2 = {root->db->setPlaceholder({cachedValue->first, name}), placeholder_t()};
}
return std::make_shared<AttrCursor>(
root, std::make_pair(shared_from_this(), name), attr->value, std::move(cachedValue2));
}
std::shared_ptr<AttrCursor> AttrCursor::maybeGetAttr(std::string_view name)
{
return maybeGetAttr(root->state.symbols.create(name));
}
std::shared_ptr<AttrCursor> AttrCursor::getAttr(Symbol name)
{
auto p = maybeGetAttr(name);
if (!p)
throw Error("attribute '%s' does not exist", getAttrPathStr(name));
return p;
}
std::shared_ptr<AttrCursor> AttrCursor::getAttr(std::string_view name)
{
return getAttr(root->state.symbols.create(name));
}
std::shared_ptr<AttrCursor> AttrCursor::findAlongAttrPath(const std::vector<Symbol> & attrPath)
{
auto res = shared_from_this();
for (auto & attr : attrPath) {
res = res->maybeGetAttr(attr);
if (!res) return {};
}
return res;
}
std::string AttrCursor::getString()
{
if (root->db) {
if (!cachedValue)
cachedValue = root->db->getAttr(getKey(), root->state.symbols);
if (cachedValue && !std::get_if<placeholder_t>(&cachedValue->second)) {
if (auto s = std::get_if<string_t>(&cachedValue->second)) {
debug("using cached string attribute '%s'", getAttrPathStr());
return s->first;
} else
throw TypeError("'%s' is not a string", getAttrPathStr());
}
}
auto & v = forceValue();
if (v.type != tString && v.type != tPath)
throw TypeError("'%s' is not a string but %s", getAttrPathStr(), showType(v.type));
return v.type == tString ? v.string.s : v.path;
}
string_t AttrCursor::getStringWithContext()
{
if (root->db) {
if (!cachedValue)
cachedValue = root->db->getAttr(getKey(), root->state.symbols);
if (cachedValue && !std::get_if<placeholder_t>(&cachedValue->second)) {
if (auto s = std::get_if<string_t>(&cachedValue->second)) {
debug("using cached string attribute '%s'", getAttrPathStr());
return *s;
} else
throw TypeError("'%s' is not a string", getAttrPathStr());
}
}
auto & v = forceValue();
if (v.type == tString)
return {v.string.s, v.getContext()};
else if (v.type == tPath)
return {v.path, {}};
else
throw TypeError("'%s' is not a string but %s", getAttrPathStr(), showType(v.type));
}
bool AttrCursor::getBool()
{
if (root->db) {
if (!cachedValue)
cachedValue = root->db->getAttr(getKey(), root->state.symbols);
if (cachedValue && !std::get_if<placeholder_t>(&cachedValue->second)) {
if (auto b = std::get_if<bool>(&cachedValue->second)) {
debug("using cached Boolean attribute '%s'", getAttrPathStr());
return *b;
} else
throw TypeError("'%s' is not a Boolean", getAttrPathStr());
}
}
auto & v = forceValue();
if (v.type != tBool)
throw TypeError("'%s' is not a Boolean", getAttrPathStr());
return v.boolean;
}
std::vector<Symbol> AttrCursor::getAttrs()
{
if (root->db) {
if (!cachedValue)
cachedValue = root->db->getAttr(getKey(), root->state.symbols);
if (cachedValue && !std::get_if<placeholder_t>(&cachedValue->second)) {
if (auto attrs = std::get_if<std::vector<Symbol>>(&cachedValue->second)) {
debug("using cached attrset attribute '%s'", getAttrPathStr());
return *attrs;
} else
throw TypeError("'%s' is not an attribute set", getAttrPathStr());
}
}
auto & v = forceValue();
if (v.type != tAttrs)
throw TypeError("'%s' is not an attribute set", getAttrPathStr());
std::vector<Symbol> attrs;
for (auto & attr : *getValue().attrs)
attrs.push_back(attr.name);
std::sort(attrs.begin(), attrs.end(), [](const Symbol & a, const Symbol & b) {
return (const string &) a < (const string &) b;
});
if (root->db)
cachedValue = {root->db->setAttrs(getKey(), attrs), attrs};
return attrs;
}
bool AttrCursor::isDerivation()
{
auto aType = maybeGetAttr("type");
return aType && aType->getString() == "derivation";
}
StorePath AttrCursor::forceDerivation()
{
auto aDrvPath = getAttr(root->state.sDrvPath);
auto drvPath = root->state.store->parseStorePath(aDrvPath->getString());
if (!root->state.store->isValidPath(drvPath) && !settings.readOnlyMode) {
/* The eval cache contains 'drvPath', but the actual path has
been garbage-collected. So force it to be regenerated. */
aDrvPath->forceValue();
if (!root->state.store->isValidPath(drvPath))
throw Error("don't know how to recreate store derivation '%s'!",
root->state.store->printStorePath(drvPath));
}
return drvPath;
}
}

121
src/libexpr/eval-cache.hh Normal file
View file

@ -0,0 +1,121 @@
#pragma once
#include "sync.hh"
#include "hash.hh"
#include "eval.hh"
#include <functional>
#include <variant>
namespace nix::eval_cache {
class AttrDb;
class AttrCursor;
class EvalCache : public std::enable_shared_from_this<EvalCache>
{
friend class AttrCursor;
std::shared_ptr<AttrDb> db;
EvalState & state;
typedef std::function<Value *()> RootLoader;
RootLoader rootLoader;
RootValue value;
Value * getRootValue();
public:
EvalCache(
std::optional<std::reference_wrapper<const Hash>> useCache,
EvalState & state,
RootLoader rootLoader);
std::shared_ptr<AttrCursor> getRoot();
};
enum AttrType {
Placeholder = 0,
FullAttrs = 1,
String = 2,
Missing = 3,
Misc = 4,
Failed = 5,
Bool = 6,
};
struct placeholder_t {};
struct missing_t {};
struct misc_t {};
struct failed_t {};
typedef uint64_t AttrId;
typedef std::pair<AttrId, Symbol> AttrKey;
typedef std::pair<std::string, std::vector<std::pair<Path, std::string>>> string_t;
typedef std::variant<
std::vector<Symbol>,
string_t,
placeholder_t,
missing_t,
misc_t,
failed_t,
bool
> AttrValue;
class AttrCursor : public std::enable_shared_from_this<AttrCursor>
{
friend class EvalCache;
ref<EvalCache> root;
typedef std::optional<std::pair<std::shared_ptr<AttrCursor>, Symbol>> Parent;
Parent parent;
RootValue _value;
std::optional<std::pair<AttrId, AttrValue>> cachedValue;
AttrKey getKey();
Value & getValue();
public:
AttrCursor(
ref<EvalCache> root,
Parent parent,
Value * value = nullptr,
std::optional<std::pair<AttrId, AttrValue>> && cachedValue = {});
std::vector<Symbol> getAttrPath() const;
std::vector<Symbol> getAttrPath(Symbol name) const;
std::string getAttrPathStr() const;
std::string getAttrPathStr(Symbol name) const;
std::shared_ptr<AttrCursor> maybeGetAttr(Symbol name);
std::shared_ptr<AttrCursor> maybeGetAttr(std::string_view name);
std::shared_ptr<AttrCursor> getAttr(Symbol name);
std::shared_ptr<AttrCursor> getAttr(std::string_view name);
std::shared_ptr<AttrCursor> findAlongAttrPath(const std::vector<Symbol> & attrPath);
std::string getString();
string_t getStringWithContext();
bool getBool();
std::vector<Symbol> getAttrs();
bool isDerivation();
Value & forceValue();
/* Force creation of the .drv file in the Nix store. */
StorePath forceDerivation();
};
}

View file

@ -11,7 +11,7 @@ LocalNoInlineNoReturn(void throwEvalError(const Pos & pos, const char * s))
{ {
throw EvalError({ throw EvalError({
.hint = hintfmt(s), .hint = hintfmt(s),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} }
@ -25,7 +25,7 @@ LocalNoInlineNoReturn(void throwTypeError(const Pos & pos, const char * s, const
{ {
throw TypeError({ throw TypeError({
.hint = hintfmt(s, showType(v)), .hint = hintfmt(s, showType(v)),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} }

View file

@ -199,6 +199,18 @@ string showType(const Value & v)
} }
bool Value::isTrivial() const
{
return
type != tApp
&& type != tPrimOpApp
&& (type != tThunk
|| (dynamic_cast<ExprAttrs *>(thunk.expr)
&& ((ExprAttrs *) thunk.expr)->dynamicAttrs.empty())
|| dynamic_cast<ExprLambda *>(thunk.expr));
}
#if HAVE_BOEHMGC #if HAVE_BOEHMGC
/* Called when the Boehm GC runs out of memory. */ /* Called when the Boehm GC runs out of memory. */
static void * oomHandler(size_t requested) static void * oomHandler(size_t requested)
@ -337,6 +349,9 @@ EvalState::EvalState(const Strings & _searchPath, ref<Store> store)
, sOutputHashAlgo(symbols.create("outputHashAlgo")) , sOutputHashAlgo(symbols.create("outputHashAlgo"))
, sOutputHashMode(symbols.create("outputHashMode")) , sOutputHashMode(symbols.create("outputHashMode"))
, sRecurseForDerivations(symbols.create("recurseForDerivations")) , sRecurseForDerivations(symbols.create("recurseForDerivations"))
, sDescription(symbols.create("description"))
, sSelf(symbols.create("self"))
, sEpsilon(symbols.create(""))
, repair(NoRepair) , repair(NoRepair)
, store(store) , store(store)
, baseEnv(allocEnv(128)) , baseEnv(allocEnv(128))
@ -366,7 +381,7 @@ EvalState::EvalState(const Strings & _searchPath, ref<Store> store)
if (store->isInStore(r.second)) { if (store->isInStore(r.second)) {
StorePathSet closure; StorePathSet closure;
store->computeFSClosure(store->parseStorePath(store->toStorePath(r.second)), closure); store->computeFSClosure(store->toStorePath(r.second).first, closure);
for (auto & path : closure) for (auto & path : closure)
allowedPaths->insert(store->printStorePath(path)); allowedPaths->insert(store->printStorePath(path));
} else } else
@ -529,7 +544,7 @@ LocalNoInlineNoReturn(void throwEvalError(const Pos & pos, const char * s, const
{ {
throw EvalError({ throw EvalError({
.hint = hintfmt(s, s2), .hint = hintfmt(s, s2),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} }
@ -542,7 +557,7 @@ LocalNoInlineNoReturn(void throwEvalError(const Pos & pos, const char * s, const
{ {
throw EvalError({ throw EvalError({
.hint = hintfmt(s, s2, s3), .hint = hintfmt(s, s2, s3),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} }
@ -551,7 +566,7 @@ LocalNoInlineNoReturn(void throwEvalError(const Pos & p1, const char * s, const
// p1 is where the error occurred; p2 is a position mentioned in the message. // p1 is where the error occurred; p2 is a position mentioned in the message.
throw EvalError({ throw EvalError({
.hint = hintfmt(s, sym, p2), .hint = hintfmt(s, sym, p2),
.nixCode = NixCode { .errPos = p1 } .errPos = p1
}); });
} }
@ -559,7 +574,7 @@ LocalNoInlineNoReturn(void throwTypeError(const Pos & pos, const char * s))
{ {
throw TypeError({ throw TypeError({
.hint = hintfmt(s), .hint = hintfmt(s),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} }
@ -572,7 +587,7 @@ LocalNoInlineNoReturn(void throwTypeError(const Pos & pos, const char * s, const
{ {
throw TypeError({ throw TypeError({
.hint = hintfmt(s, fun.showNamePos(), s2), .hint = hintfmt(s, fun.showNamePos(), s2),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} }
@ -580,7 +595,7 @@ LocalNoInlineNoReturn(void throwAssertionError(const Pos & pos, const char * s,
{ {
throw AssertionError({ throw AssertionError({
.hint = hintfmt(s, s1), .hint = hintfmt(s, s1),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} }
@ -588,23 +603,18 @@ LocalNoInlineNoReturn(void throwUndefinedVarError(const Pos & pos, const char *
{ {
throw UndefinedVarError({ throw UndefinedVarError({
.hint = hintfmt(s, s1), .hint = hintfmt(s, s1),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} }
LocalNoInline(void addErrorPrefix(Error & e, const char * s, const string & s2)) LocalNoInline(void addErrorTrace(Error & e, const char * s, const string & s2))
{ {
e.addPrefix(format(s) % s2); e.addTrace(std::nullopt, s, s2);
} }
LocalNoInline(void addErrorPrefix(Error & e, const char * s, const ExprLambda & fun, const Pos & pos)) LocalNoInline(void addErrorTrace(Error & e, const Pos & pos, const char * s, const string & s2))
{ {
e.addPrefix(format(s) % fun.showNamePos() % pos); e.addTrace(pos, s, s2);
}
LocalNoInline(void addErrorPrefix(Error & e, const char * s, const string & s2, const Pos & pos))
{
e.addPrefix(format(s) % s2 % pos);
} }
@ -787,7 +797,7 @@ Value * ExprPath::maybeThunk(EvalState & state, Env & env)
} }
void EvalState::evalFile(const Path & path_, Value & v) void EvalState::evalFile(const Path & path_, Value & v, bool mustBeTrivial)
{ {
auto path = checkSourcePath(path_); auto path = checkSourcePath(path_);
@ -816,9 +826,14 @@ void EvalState::evalFile(const Path & path_, Value & v)
fileParseCache[path2] = e; fileParseCache[path2] = e;
try { try {
// Enforce that 'flake.nix' is a direct attrset, not a
// computation.
if (mustBeTrivial &&
!(dynamic_cast<ExprAttrs *>(e)))
throw Error("file '%s' must be an attribute set", path);
eval(e, v); eval(e, v);
} catch (Error & e) { } catch (Error & e) {
addErrorPrefix(e, "while evaluating the file '%1%':\n", path2); addErrorTrace(e, "while evaluating the file '%1%':", path2);
throw; throw;
} }
@ -1068,8 +1083,8 @@ void ExprSelect::eval(EvalState & state, Env & env, Value & v)
} catch (Error & e) { } catch (Error & e) {
if (pos2 && pos2->file != state.sDerivationNix) if (pos2 && pos2->file != state.sDerivationNix)
addErrorPrefix(e, "while evaluating the attribute '%1%' at %2%:\n", addErrorTrace(e, *pos2, "while evaluating the attribute '%1%'",
showAttrPath(state, env, attrPath), *pos2); showAttrPath(state, env, attrPath));
throw; throw;
} }
@ -1237,11 +1252,15 @@ void EvalState::callFunction(Value & fun, Value & arg, Value & v, const Pos & po
/* Evaluate the body. This is conditional on showTrace, because /* Evaluate the body. This is conditional on showTrace, because
catching exceptions makes this function not tail-recursive. */ catching exceptions makes this function not tail-recursive. */
if (settings.showTrace) if (loggerSettings.showTrace.get())
try { try {
lambda.body->eval(*this, env2, v); lambda.body->eval(*this, env2, v);
} catch (Error & e) { } catch (Error & e) {
addErrorPrefix(e, "while evaluating %1%, called from %2%:\n", lambda, pos); addErrorTrace(e, lambda.pos, "while evaluating %s",
(lambda.name.set()
? "'" + (string) lambda.name + "'"
: "anonymous lambdaction"));
addErrorTrace(e, pos, "from call site%s", "");
throw; throw;
} }
else else
@ -1516,7 +1535,7 @@ void EvalState::forceValueDeep(Value & v)
try { try {
recurse(*i.value); recurse(*i.value);
} catch (Error & e) { } catch (Error & e) {
addErrorPrefix(e, "while evaluating the attribute '%1%' at %2%:\n", i.name, *i.pos); addErrorTrace(e, *i.pos, "while evaluating the attribute '%1%'", i.name);
throw; throw;
} }
} }
@ -1587,6 +1606,18 @@ string EvalState::forceString(Value & v, const Pos & pos)
} }
/* Decode a context string !<name>!<path> into a pair <path,
name>. */
std::pair<string, string> decodeContext(std::string_view s)
{
if (s.at(0) == '!') {
size_t index = s.find("!", 1);
return {std::string(s.substr(index + 1)), std::string(s.substr(1, index - 1))};
} else
return {s.at(0) == '/' ? std::string(s) : std::string(s.substr(1)), ""};
}
void copyContext(const Value & v, PathSet & context) void copyContext(const Value & v, PathSet & context)
{ {
if (v.string.context) if (v.string.context)
@ -1595,6 +1626,17 @@ void copyContext(const Value & v, PathSet & context)
} }
std::vector<std::pair<Path, std::string>> Value::getContext()
{
std::vector<std::pair<Path, std::string>> res;
assert(type == tString);
if (string.context)
for (const char * * p = string.context; *p; ++p)
res.push_back(decodeContext(*p));
return res;
}
string EvalState::forceString(Value & v, PathSet & context, const Pos & pos) string EvalState::forceString(Value & v, PathSet & context, const Pos & pos)
{ {
string s = forceString(v, pos); string s = forceString(v, pos);
@ -1936,7 +1978,7 @@ string ExternalValueBase::coerceToString(const Pos & pos, PathSet & context, boo
{ {
throw TypeError({ throw TypeError({
.hint = hintfmt("cannot coerce %1% to a string", showType()), .hint = hintfmt("cannot coerce %1% to a string", showType()),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} }

View file

@ -4,13 +4,13 @@
#include "value.hh" #include "value.hh"
#include "nixexpr.hh" #include "nixexpr.hh"
#include "symbol-table.hh" #include "symbol-table.hh"
#include "hash.hh"
#include "config.hh" #include "config.hh"
#include <regex> #include <regex>
#include <map> #include <map>
#include <optional> #include <optional>
#include <unordered_map> #include <unordered_map>
#include <mutex>
namespace nix { namespace nix {
@ -75,7 +75,8 @@ public:
sFile, sLine, sColumn, sFunctor, sToString, sFile, sLine, sColumn, sFunctor, sToString,
sRight, sWrong, sStructuredAttrs, sBuilder, sArgs, sRight, sWrong, sStructuredAttrs, sBuilder, sArgs,
sOutputHash, sOutputHashAlgo, sOutputHashMode, sOutputHash, sOutputHashAlgo, sOutputHashMode,
sRecurseForDerivations; sRecurseForDerivations,
sDescription, sSelf, sEpsilon;
Symbol sDerivationNix; Symbol sDerivationNix;
/* If set, force copying files to the Nix store even if they /* If set, force copying files to the Nix store even if they
@ -90,6 +91,7 @@ public:
const ref<Store> store; const ref<Store> store;
private: private:
SrcToStore srcToStore; SrcToStore srcToStore;
@ -152,8 +154,9 @@ public:
Expr * parseStdin(); Expr * parseStdin();
/* Evaluate an expression read from the given file to normal /* Evaluate an expression read from the given file to normal
form. */ form. Optionally enforce that the top-level expression is
void evalFile(const Path & path, Value & v); trivial (i.e. doesn't require arbitrary computation). */
void evalFile(const Path & path, Value & v, bool mustBeTrivial = false);
void resetFileCache(); void resetFileCache();
@ -250,7 +253,7 @@ private:
friend struct ExprAttrs; friend struct ExprAttrs;
friend struct ExprLet; friend struct ExprLet;
Expr * parse(const char * text, const Path & path, Expr * parse(const char * text, FileOrigin origin, const Path & path,
const Path & basePath, StaticEnv & staticEnv); const Path & basePath, StaticEnv & staticEnv);
public: public:
@ -330,7 +333,7 @@ string showType(const Value & v);
/* Decode a context string !<name>!<path> into a pair <path, /* Decode a context string !<name>!<path> into a pair <path,
name>. */ name>. */
std::pair<string, string> decodeContext(const string & s); std::pair<string, string> decodeContext(std::string_view s);
/* If `path' refers to a directory, then append "/default.nix". */ /* If `path' refers to a directory, then append "/default.nix". */
Path resolveExprPath(Path path); Path resolveExprPath(Path path);

View file

@ -0,0 +1,56 @@
lockFileStr: rootSrc: rootSubdir:
let
lockFile = builtins.fromJSON lockFileStr;
allNodes =
builtins.mapAttrs
(key: node:
let
sourceInfo =
if key == lockFile.root
then rootSrc
else fetchTree (node.info or {} // removeAttrs node.locked ["dir"]);
subdir = if key == lockFile.root then rootSubdir else node.locked.dir or "";
flake = import (sourceInfo + (if subdir != "" then "/" else "") + subdir + "/flake.nix");
inputs = builtins.mapAttrs
(inputName: inputSpec: allNodes.${resolveInput inputSpec})
(node.inputs or {});
# Resolve a input spec into a node name. An input spec is
# either a node name, or a 'follows' path from the root
# node.
resolveInput = inputSpec:
if builtins.isList inputSpec
then getInputByPath lockFile.root inputSpec
else inputSpec;
# Follow an input path (e.g. ["dwarffs" "nixpkgs"]) from the
# root node, returning the final node.
getInputByPath = nodeName: path:
if path == []
then nodeName
else
getInputByPath
# Since this could be a 'follows' input, call resolveInput.
(resolveInput lockFile.nodes.${nodeName}.inputs.${builtins.head path})
(builtins.tail path);
outputs = flake.outputs (inputs // { self = result; });
result = outputs // sourceInfo // { inherit inputs; inherit outputs; inherit sourceInfo; };
in
if node.flake or true then
assert builtins.isFunction flake.outputs;
result
else
sourceInfo
)
lockFile.nodes;
in allNodes.${lockFile.root}

609
src/libexpr/flake/flake.cc Normal file
View file

@ -0,0 +1,609 @@
#include "flake.hh"
#include "lockfile.hh"
#include "primops.hh"
#include "eval-inline.hh"
#include "store-api.hh"
#include "fetchers.hh"
#include "finally.hh"
namespace nix {
using namespace flake;
namespace flake {
typedef std::pair<Tree, FlakeRef> FetchedFlake;
typedef std::vector<std::pair<FlakeRef, FetchedFlake>> FlakeCache;
static std::optional<FetchedFlake> lookupInFlakeCache(
const FlakeCache & flakeCache,
const FlakeRef & flakeRef)
{
// FIXME: inefficient.
for (auto & i : flakeCache) {
if (flakeRef == i.first) {
debug("mapping '%s' to previously seen input '%s' -> '%s",
flakeRef, i.first, i.second.second);
return i.second;
}
}
return std::nullopt;
}
static std::tuple<fetchers::Tree, FlakeRef, FlakeRef> fetchOrSubstituteTree(
EvalState & state,
const FlakeRef & originalRef,
bool allowLookup,
FlakeCache & flakeCache)
{
auto fetched = lookupInFlakeCache(flakeCache, originalRef);
FlakeRef resolvedRef = originalRef;
if (!fetched) {
if (originalRef.input.isDirect()) {
fetched.emplace(originalRef.fetchTree(state.store));
} else {
if (allowLookup) {
resolvedRef = originalRef.resolve(state.store);
auto fetchedResolved = lookupInFlakeCache(flakeCache, originalRef);
if (!fetchedResolved) fetchedResolved.emplace(resolvedRef.fetchTree(state.store));
flakeCache.push_back({resolvedRef, fetchedResolved.value()});
fetched.emplace(fetchedResolved.value());
}
else {
throw Error("'%s' is an indirect flake reference, but registry lookups are not allowed", originalRef);
}
}
flakeCache.push_back({originalRef, fetched.value()});
}
auto [tree, lockedRef] = fetched.value();
debug("got tree '%s' from '%s'",
state.store->printStorePath(tree.storePath), lockedRef);
if (state.allowedPaths)
state.allowedPaths->insert(tree.actualPath);
assert(!originalRef.input.getNarHash() || tree.storePath == originalRef.input.computeStorePath(*state.store));
return {std::move(tree), resolvedRef, lockedRef};
}
static void expectType(EvalState & state, ValueType type,
Value & value, const Pos & pos)
{
if (value.type == tThunk && value.isTrivial())
state.forceValue(value, pos);
if (value.type != type)
throw Error("expected %s but got %s at %s",
showType(type), showType(value.type), pos);
}
static std::map<FlakeId, FlakeInput> parseFlakeInputs(
EvalState & state, Value * value, const Pos & pos);
static FlakeInput parseFlakeInput(EvalState & state,
const std::string & inputName, Value * value, const Pos & pos)
{
expectType(state, tAttrs, *value, pos);
FlakeInput input;
auto sInputs = state.symbols.create("inputs");
auto sUrl = state.symbols.create("url");
auto sFlake = state.symbols.create("flake");
auto sFollows = state.symbols.create("follows");
fetchers::Attrs attrs;
std::optional<std::string> url;
for (nix::Attr attr : *(value->attrs)) {
try {
if (attr.name == sUrl) {
expectType(state, tString, *attr.value, *attr.pos);
url = attr.value->string.s;
attrs.emplace("url", *url);
} else if (attr.name == sFlake) {
expectType(state, tBool, *attr.value, *attr.pos);
input.isFlake = attr.value->boolean;
} else if (attr.name == sInputs) {
input.overrides = parseFlakeInputs(state, attr.value, *attr.pos);
} else if (attr.name == sFollows) {
expectType(state, tString, *attr.value, *attr.pos);
input.follows = parseInputPath(attr.value->string.s);
} else {
state.forceValue(*attr.value);
if (attr.value->type == tString)
attrs.emplace(attr.name, attr.value->string.s);
else
throw TypeError("flake input attribute '%s' is %s while a string is expected",
attr.name, showType(*attr.value));
}
} catch (Error & e) {
e.addTrace(*attr.pos, hintfmt("in flake attribute '%s'", attr.name));
throw;
}
}
if (attrs.count("type"))
try {
input.ref = FlakeRef::fromAttrs(attrs);
} catch (Error & e) {
e.addTrace(pos, hintfmt("in flake input"));
throw;
}
else {
attrs.erase("url");
if (!attrs.empty())
throw Error("unexpected flake input attribute '%s', at %s", attrs.begin()->first, pos);
if (url)
input.ref = parseFlakeRef(*url, {}, true);
}
if (!input.follows && !input.ref)
input.ref = FlakeRef::fromAttrs({{"type", "indirect"}, {"id", inputName}});
return input;
}
static std::map<FlakeId, FlakeInput> parseFlakeInputs(
EvalState & state, Value * value, const Pos & pos)
{
std::map<FlakeId, FlakeInput> inputs;
expectType(state, tAttrs, *value, pos);
for (nix::Attr & inputAttr : *(*value).attrs) {
inputs.emplace(inputAttr.name,
parseFlakeInput(state,
inputAttr.name,
inputAttr.value,
*inputAttr.pos));
}
return inputs;
}
static Flake getFlake(
EvalState & state,
const FlakeRef & originalRef,
bool allowLookup,
FlakeCache & flakeCache)
{
auto [sourceInfo, resolvedRef, lockedRef] = fetchOrSubstituteTree(
state, originalRef, allowLookup, flakeCache);
// Guard against symlink attacks.
auto flakeFile = canonPath(sourceInfo.actualPath + "/" + lockedRef.subdir + "/flake.nix");
if (!isInDir(flakeFile, sourceInfo.actualPath))
throw Error("'flake.nix' file of flake '%s' escapes from '%s'",
lockedRef, state.store->printStorePath(sourceInfo.storePath));
Flake flake {
.originalRef = originalRef,
.resolvedRef = resolvedRef,
.lockedRef = lockedRef,
.sourceInfo = std::make_shared<fetchers::Tree>(std::move(sourceInfo))
};
if (!pathExists(flakeFile))
throw Error("source tree referenced by '%s' does not contain a '%s/flake.nix' file", lockedRef, lockedRef.subdir);
Value vInfo;
state.evalFile(flakeFile, vInfo, true); // FIXME: symlink attack
expectType(state, tAttrs, vInfo, Pos(foFile, state.symbols.create(flakeFile), 0, 0));
auto sEdition = state.symbols.create("edition"); // FIXME: remove soon
if (vInfo.attrs->get(sEdition))
warn("flake '%s' has deprecated attribute 'edition'", lockedRef);
if (auto description = vInfo.attrs->get(state.sDescription)) {
expectType(state, tString, *description->value, *description->pos);
flake.description = description->value->string.s;
}
auto sInputs = state.symbols.create("inputs");
if (auto inputs = vInfo.attrs->get(sInputs))
flake.inputs = parseFlakeInputs(state, inputs->value, *inputs->pos);
auto sOutputs = state.symbols.create("outputs");
if (auto outputs = vInfo.attrs->get(sOutputs)) {
expectType(state, tLambda, *outputs->value, *outputs->pos);
flake.vOutputs = allocRootValue(outputs->value);
if ((*flake.vOutputs)->lambda.fun->matchAttrs) {
for (auto & formal : (*flake.vOutputs)->lambda.fun->formals->formals) {
if (formal.name != state.sSelf)
flake.inputs.emplace(formal.name, FlakeInput {
.ref = parseFlakeRef(formal.name)
});
}
}
} else
throw Error("flake '%s' lacks attribute 'outputs'", lockedRef);
for (auto & attr : *vInfo.attrs) {
if (attr.name != sEdition &&
attr.name != state.sDescription &&
attr.name != sInputs &&
attr.name != sOutputs)
throw Error("flake '%s' has an unsupported attribute '%s', at %s",
lockedRef, attr.name, *attr.pos);
}
return flake;
}
Flake getFlake(EvalState & state, const FlakeRef & originalRef, bool allowLookup)
{
FlakeCache flakeCache;
return getFlake(state, originalRef, allowLookup, flakeCache);
}
/* Compute an in-memory lock file for the specified top-level flake,
and optionally write it to file, it the flake is writable. */
LockedFlake lockFlake(
EvalState & state,
const FlakeRef & topRef,
const LockFlags & lockFlags)
{
settings.requireExperimentalFeature("flakes");
FlakeCache flakeCache;
auto flake = getFlake(state, topRef, lockFlags.useRegistries, flakeCache);
// FIXME: symlink attack
auto oldLockFile = LockFile::read(
flake.sourceInfo->actualPath + "/" + flake.lockedRef.subdir + "/flake.lock");
debug("old lock file: %s", oldLockFile);
// FIXME: check whether all overrides are used.
std::map<InputPath, FlakeInput> overrides;
std::set<InputPath> overridesUsed, updatesUsed;
for (auto & i : lockFlags.inputOverrides)
overrides.insert_or_assign(i.first, FlakeInput { .ref = i.second });
LockFile newLockFile;
std::vector<FlakeRef> parents;
std::function<void(
const FlakeInputs & flakeInputs,
std::shared_ptr<Node> node,
const InputPath & inputPathPrefix,
std::shared_ptr<const Node> oldNode)>
computeLocks;
computeLocks = [&](
const FlakeInputs & flakeInputs,
std::shared_ptr<Node> node,
const InputPath & inputPathPrefix,
std::shared_ptr<const Node> oldNode)
{
debug("computing lock file node '%s'", printInputPath(inputPathPrefix));
/* Get the overrides (i.e. attributes of the form
'inputs.nixops.inputs.nixpkgs.url = ...'). */
// FIXME: check this
for (auto & [id, input] : flake.inputs) {
for (auto & [idOverride, inputOverride] : input.overrides) {
auto inputPath(inputPathPrefix);
inputPath.push_back(id);
inputPath.push_back(idOverride);
overrides.insert_or_assign(inputPath, inputOverride);
}
}
/* Go over the flake inputs, resolve/fetch them if
necessary (i.e. if they're new or the flakeref changed
from what's in the lock file). */
for (auto & [id, input2] : flakeInputs) {
auto inputPath(inputPathPrefix);
inputPath.push_back(id);
auto inputPathS = printInputPath(inputPath);
debug("computing input '%s'", inputPathS);
/* Do we have an override for this input from one of the
ancestors? */
auto i = overrides.find(inputPath);
bool hasOverride = i != overrides.end();
if (hasOverride) overridesUsed.insert(inputPath);
auto & input = hasOverride ? i->second : input2;
/* Resolve 'follows' later (since it may refer to an input
path we haven't processed yet. */
if (input.follows) {
InputPath target;
if (hasOverride || input.absolute)
/* 'follows' from an override is relative to the
root of the graph. */
target = *input.follows;
else {
/* Otherwise, it's relative to the current flake. */
target = inputPathPrefix;
for (auto & i : *input.follows) target.push_back(i);
}
debug("input '%s' follows '%s'", inputPathS, printInputPath(target));
node->inputs.insert_or_assign(id, target);
continue;
}
assert(input.ref);
/* Do we have an entry in the existing lock file? And we
don't have a --update-input flag for this input? */
std::shared_ptr<LockedNode> oldLock;
updatesUsed.insert(inputPath);
if (oldNode && !lockFlags.inputUpdates.count(inputPath))
if (auto oldLock2 = get(oldNode->inputs, id))
if (auto oldLock3 = std::get_if<0>(&*oldLock2))
oldLock = *oldLock3;
if (oldLock
&& oldLock->originalRef == *input.ref
&& !hasOverride)
{
debug("keeping existing input '%s'", inputPathS);
/* Copy the input from the old lock since its flakeref
didn't change and there is no override from a
higher level flake. */
auto childNode = std::make_shared<LockedNode>(
oldLock->lockedRef, oldLock->originalRef, oldLock->isFlake);
node->inputs.insert_or_assign(id, childNode);
/* If we have an --update-input flag for an input
of this input, then we must fetch the flake to
to update it. */
auto lb = lockFlags.inputUpdates.lower_bound(inputPath);
auto hasChildUpdate =
lb != lockFlags.inputUpdates.end()
&& lb->size() > inputPath.size()
&& std::equal(inputPath.begin(), inputPath.end(), lb->begin());
if (hasChildUpdate) {
auto inputFlake = getFlake(
state, oldLock->lockedRef, false, flakeCache);
computeLocks(inputFlake.inputs, childNode, inputPath, oldLock);
} else {
/* No need to fetch this flake, we can be
lazy. However there may be new overrides on the
inputs of this flake, so we need to check
those. */
FlakeInputs fakeInputs;
for (auto & i : oldLock->inputs) {
if (auto lockedNode = std::get_if<0>(&i.second)) {
fakeInputs.emplace(i.first, FlakeInput {
.ref = (*lockedNode)->originalRef,
.isFlake = (*lockedNode)->isFlake,
});
} else if (auto follows = std::get_if<1>(&i.second)) {
fakeInputs.emplace(i.first, FlakeInput {
.follows = *follows,
.absolute = true
});
}
}
computeLocks(fakeInputs, childNode, inputPath, oldLock);
}
} else {
/* We need to create a new lock file entry. So fetch
this input. */
debug("creating new input '%s'", inputPathS);
if (!lockFlags.allowMutable && !input.ref->input.isImmutable())
throw Error("cannot update flake input '%s' in pure mode", inputPathS);
if (input.isFlake) {
auto inputFlake = getFlake(state, *input.ref, lockFlags.useRegistries, flakeCache);
/* Note: in case of an --override-input, we use
the *original* ref (input2.ref) for the
"original" field, rather than the
override. This ensures that the override isn't
nuked the next time we update the lock
file. That is, overrides are sticky unless you
use --no-write-lock-file. */
auto childNode = std::make_shared<LockedNode>(
inputFlake.lockedRef, input2.ref ? *input2.ref : *input.ref);
node->inputs.insert_or_assign(id, childNode);
/* Guard against circular flake imports. */
for (auto & parent : parents)
if (parent == *input.ref)
throw Error("found circular import of flake '%s'", parent);
parents.push_back(*input.ref);
Finally cleanup([&]() { parents.pop_back(); });
/* Recursively process the inputs of this
flake. Also, unless we already have this flake
in the top-level lock file, use this flake's
own lock file. */
computeLocks(
inputFlake.inputs, childNode, inputPath,
oldLock
? std::dynamic_pointer_cast<const Node>(oldLock)
: LockFile::read(
inputFlake.sourceInfo->actualPath + "/" + inputFlake.lockedRef.subdir + "/flake.lock").root);
}
else {
auto [sourceInfo, resolvedRef, lockedRef] = fetchOrSubstituteTree(
state, *input.ref, lockFlags.useRegistries, flakeCache);
node->inputs.insert_or_assign(id,
std::make_shared<LockedNode>(lockedRef, *input.ref, false));
}
}
}
};
computeLocks(
flake.inputs, newLockFile.root, {},
lockFlags.recreateLockFile ? nullptr : oldLockFile.root);
for (auto & i : lockFlags.inputOverrides)
if (!overridesUsed.count(i.first))
warn("the flag '--override-input %s %s' does not match any input",
printInputPath(i.first), i.second);
for (auto & i : lockFlags.inputUpdates)
if (!updatesUsed.count(i))
warn("the flag '--update-input %s' does not match any input", printInputPath(i));
/* Check 'follows' inputs. */
newLockFile.check();
debug("new lock file: %s", newLockFile);
/* Check whether we need to / can write the new lock file. */
if (!(newLockFile == oldLockFile)) {
auto diff = LockFile::diff(oldLockFile, newLockFile);
if (lockFlags.writeLockFile) {
if (auto sourcePath = topRef.input.getSourcePath()) {
if (!newLockFile.isImmutable()) {
if (settings.warnDirty)
warn("will not write lock file of flake '%s' because it has a mutable input", topRef);
} else {
if (!lockFlags.updateLockFile)
throw Error("flake '%s' requires lock file changes but they're not allowed due to '--no-update-lock-file'", topRef);
auto relPath = (topRef.subdir == "" ? "" : topRef.subdir + "/") + "flake.lock";
auto path = *sourcePath + "/" + relPath;
bool lockFileExists = pathExists(path);
if (lockFileExists) {
auto s = chomp(diff);
if (s.empty())
warn("updating lock file '%s'", path);
else
warn("updating lock file '%s':\n%s", path, s);
} else
warn("creating lock file '%s'", path);
newLockFile.write(path);
topRef.input.markChangedFile(
(topRef.subdir == "" ? "" : topRef.subdir + "/") + "flake.lock",
lockFlags.commitLockFile
? std::optional<std::string>(fmt("%s: %s\n\nFlake input changes:\n\n%s",
relPath, lockFileExists ? "Update" : "Add", diff))
: std::nullopt);
/* Rewriting the lockfile changed the top-level
repo, so we should re-read it. FIXME: we could
also just clear the 'rev' field... */
auto prevLockedRef = flake.lockedRef;
FlakeCache dummyCache;
flake = getFlake(state, topRef, lockFlags.useRegistries, dummyCache);
if (lockFlags.commitLockFile &&
flake.lockedRef.input.getRev() &&
prevLockedRef.input.getRev() != flake.lockedRef.input.getRev())
warn("committed new revision '%s'", flake.lockedRef.input.getRev()->gitRev());
/* Make sure that we picked up the change,
i.e. the tree should usually be dirty
now. Corner case: we could have reverted from a
dirty to a clean tree! */
if (flake.lockedRef.input == prevLockedRef.input
&& !flake.lockedRef.input.isImmutable())
throw Error("'%s' did not change after I updated its 'flake.lock' file; is 'flake.lock' under version control?", flake.originalRef);
}
} else
throw Error("cannot write modified lock file of flake '%s' (use '--no-write-lock-file' to ignore)", topRef);
} else
warn("not writing modified lock file of flake '%s':\n%s", topRef, chomp(diff));
}
return LockedFlake { .flake = std::move(flake), .lockFile = std::move(newLockFile) };
}
void callFlake(EvalState & state,
const LockedFlake & lockedFlake,
Value & vRes)
{
auto vLocks = state.allocValue();
auto vRootSrc = state.allocValue();
auto vRootSubdir = state.allocValue();
auto vTmp1 = state.allocValue();
auto vTmp2 = state.allocValue();
mkString(*vLocks, lockedFlake.lockFile.to_string());
emitTreeAttrs(state, *lockedFlake.flake.sourceInfo, lockedFlake.flake.lockedRef.input, *vRootSrc);
mkString(*vRootSubdir, lockedFlake.flake.lockedRef.subdir);
static RootValue vCallFlake = nullptr;
if (!vCallFlake) {
vCallFlake = allocRootValue(state.allocValue());
state.eval(state.parseExprFromString(
#include "call-flake.nix.gen.hh"
, "/"), **vCallFlake);
}
state.callFunction(**vCallFlake, *vLocks, *vTmp1, noPos);
state.callFunction(*vTmp1, *vRootSrc, *vTmp2, noPos);
state.callFunction(*vTmp2, *vRootSubdir, vRes, noPos);
}
static void prim_getFlake(EvalState & state, const Pos & pos, Value * * args, Value & v)
{
auto flakeRefS = state.forceStringNoCtx(*args[0], pos);
auto flakeRef = parseFlakeRef(flakeRefS, {}, true);
if (evalSettings.pureEval && !flakeRef.input.isImmutable())
throw Error("cannot call 'getFlake' on mutable flake reference '%s', at %s (use --impure to override)", flakeRefS, pos);
callFlake(state,
lockFlake(state, flakeRef,
LockFlags {
.updateLockFile = false,
.useRegistries = !evalSettings.pureEval,
.allowMutable = !evalSettings.pureEval,
}),
v);
}
static RegisterPrimOp r2("__getFlake", 1, prim_getFlake, "flakes");
}
Fingerprint LockedFlake::getFingerprint() const
{
// FIXME: as an optimization, if the flake contains a lock file
// and we haven't changed it, then it's sufficient to use
// flake.sourceInfo.storePath for the fingerprint.
return hashString(htSHA256,
fmt("%s;%d;%d;%s",
flake.sourceInfo->storePath.to_string(),
flake.lockedRef.input.getRevCount().value_or(0),
flake.lockedRef.input.getLastModified().value_or(0),
lockFile));
}
Flake::~Flake() { }
}

111
src/libexpr/flake/flake.hh Normal file
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#pragma once
#include "types.hh"
#include "flakeref.hh"
#include "lockfile.hh"
#include "value.hh"
namespace nix {
class EvalState;
namespace fetchers { struct Tree; }
namespace flake {
struct FlakeInput;
typedef std::map<FlakeId, FlakeInput> FlakeInputs;
struct FlakeInput
{
std::optional<FlakeRef> ref;
bool isFlake = true;
std::optional<InputPath> follows;
bool absolute = false; // whether 'follows' is relative to the flake root
FlakeInputs overrides;
};
struct Flake
{
FlakeRef originalRef;
FlakeRef resolvedRef;
FlakeRef lockedRef;
std::optional<std::string> description;
std::shared_ptr<const fetchers::Tree> sourceInfo;
FlakeInputs inputs;
RootValue vOutputs;
~Flake();
};
Flake getFlake(EvalState & state, const FlakeRef & flakeRef, bool allowLookup);
/* Fingerprint of a locked flake; used as a cache key. */
typedef Hash Fingerprint;
struct LockedFlake
{
Flake flake;
LockFile lockFile;
Fingerprint getFingerprint() const;
};
struct LockFlags
{
/* Whether to ignore the existing lock file, creating a new one
from scratch. */
bool recreateLockFile = false;
/* Whether to update the lock file at all. If set to false, if any
change to the lock file is needed (e.g. when an input has been
added to flake.nix), you get a fatal error. */
bool updateLockFile = true;
/* Whether to write the lock file to disk. If set to true, if the
any changes to the lock file are needed and the flake is not
writable (i.e. is not a local Git working tree or similar), you
get a fatal error. If set to false, Nix will use the modified
lock file in memory only, without writing it to disk. */
bool writeLockFile = true;
/* Whether to use the registries to lookup indirect flake
references like 'nixpkgs'. */
bool useRegistries = true;
/* Whether mutable flake references (i.e. those without a Git
revision or similar) without a corresponding lock are
allowed. Mutable flake references with a lock are always
allowed. */
bool allowMutable = true;
/* Whether to commit changes to flake.lock. */
bool commitLockFile = false;
/* Flake inputs to be overriden. */
std::map<InputPath, FlakeRef> inputOverrides;
/* Flake inputs to be updated. This means that any existing lock
for those inputs will be ignored. */
std::set<InputPath> inputUpdates;
};
LockedFlake lockFlake(
EvalState & state,
const FlakeRef & flakeRef,
const LockFlags & lockFlags);
void callFlake(
EvalState & state,
const LockedFlake & lockedFlake,
Value & v);
}
void emitTreeAttrs(
EvalState & state,
const fetchers::Tree & tree,
const fetchers::Input & input,
Value & v, bool emptyRevFallback = false);
}

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#include "flakeref.hh"
#include "store-api.hh"
#include "url.hh"
#include "fetchers.hh"
#include "registry.hh"
namespace nix {
#if 0
// 'dir' path elements cannot start with a '.'. We also reject
// potentially dangerous characters like ';'.
const static std::string subDirElemRegex = "(?:[a-zA-Z0-9_-]+[a-zA-Z0-9._-]*)";
const static std::string subDirRegex = subDirElemRegex + "(?:/" + subDirElemRegex + ")*";
#endif
std::string FlakeRef::to_string() const
{
auto url = input.toURL();
if (subdir != "")
url.query.insert_or_assign("dir", subdir);
return url.to_string();
}
fetchers::Attrs FlakeRef::toAttrs() const
{
auto attrs = input.toAttrs();
if (subdir != "")
attrs.emplace("dir", subdir);
return attrs;
}
std::ostream & operator << (std::ostream & str, const FlakeRef & flakeRef)
{
str << flakeRef.to_string();
return str;
}
bool FlakeRef::operator ==(const FlakeRef & other) const
{
return input == other.input && subdir == other.subdir;
}
FlakeRef FlakeRef::resolve(ref<Store> store) const
{
auto [input2, extraAttrs] = lookupInRegistries(store, input);
return FlakeRef(std::move(input2), fetchers::maybeGetStrAttr(extraAttrs, "dir").value_or(subdir));
}
FlakeRef parseFlakeRef(
const std::string & url, const std::optional<Path> & baseDir, bool allowMissing)
{
auto [flakeRef, fragment] = parseFlakeRefWithFragment(url, baseDir, allowMissing);
if (fragment != "")
throw Error("unexpected fragment '%s' in flake reference '%s'", fragment, url);
return flakeRef;
}
std::optional<FlakeRef> maybeParseFlakeRef(
const std::string & url, const std::optional<Path> & baseDir)
{
try {
return parseFlakeRef(url, baseDir);
} catch (Error &) {
return {};
}
}
std::pair<FlakeRef, std::string> parseFlakeRefWithFragment(
const std::string & url, const std::optional<Path> & baseDir, bool allowMissing)
{
using namespace fetchers;
static std::string fnRegex = "[0-9a-zA-Z-._~!$&'\"()*+,;=]+";
static std::regex pathUrlRegex(
"(/?" + fnRegex + "(?:/" + fnRegex + ")*/?)"
+ "(?:\\?(" + queryRegex + "))?"
+ "(?:#(" + queryRegex + "))?",
std::regex::ECMAScript);
static std::regex flakeRegex(
"((" + flakeIdRegexS + ")(?:/(?:" + refAndOrRevRegex + "))?)"
+ "(?:#(" + queryRegex + "))?",
std::regex::ECMAScript);
std::smatch match;
/* Check if 'url' is a flake ID. This is an abbreviated syntax for
'flake:<flake-id>?ref=<ref>&rev=<rev>'. */
if (std::regex_match(url, match, flakeRegex)) {
auto parsedURL = ParsedURL{
.url = url,
.base = "flake:" + std::string(match[1]),
.scheme = "flake",
.authority = "",
.path = match[1],
};
return std::make_pair(
FlakeRef(Input::fromURL(parsedURL), ""),
percentDecode(std::string(match[6])));
}
else if (std::regex_match(url, match, pathUrlRegex)) {
std::string path = match[1];
std::string fragment = percentDecode(std::string(match[3]));
if (baseDir) {
/* Check if 'url' is a path (either absolute or relative
to 'baseDir'). If so, search upward to the root of the
repo (i.e. the directory containing .git). */
path = absPath(path, baseDir, true);
if (!S_ISDIR(lstat(path).st_mode))
throw BadURL("path '%s' is not a flake (because it's not a directory)", path);
if (!allowMissing && !pathExists(path + "/flake.nix"))
throw BadURL("path '%s' is not a flake (because it doesn't contain a 'flake.nix' file)", path);
auto flakeRoot = path;
std::string subdir;
while (flakeRoot != "/") {
if (pathExists(flakeRoot + "/.git")) {
auto base = std::string("git+file://") + flakeRoot;
auto parsedURL = ParsedURL{
.url = base, // FIXME
.base = base,
.scheme = "git+file",
.authority = "",
.path = flakeRoot,
.query = decodeQuery(match[2]),
};
if (subdir != "") {
if (parsedURL.query.count("dir"))
throw Error("flake URL '%s' has an inconsistent 'dir' parameter", url);
parsedURL.query.insert_or_assign("dir", subdir);
}
if (pathExists(flakeRoot + "/.git/shallow"))
parsedURL.query.insert_or_assign("shallow", "1");
return std::make_pair(
FlakeRef(Input::fromURL(parsedURL), get(parsedURL.query, "dir").value_or("")),
fragment);
}
subdir = std::string(baseNameOf(flakeRoot)) + (subdir.empty() ? "" : "/" + subdir);
flakeRoot = dirOf(flakeRoot);
}
} else {
if (!hasPrefix(path, "/"))
throw BadURL("flake reference '%s' is not an absolute path", url);
path = canonPath(path);
}
fetchers::Attrs attrs;
attrs.insert_or_assign("type", "path");
attrs.insert_or_assign("path", path);
return std::make_pair(FlakeRef(Input::fromAttrs(std::move(attrs)), ""), fragment);
}
else {
auto parsedURL = parseURL(url);
std::string fragment;
std::swap(fragment, parsedURL.fragment);
return std::make_pair(
FlakeRef(Input::fromURL(parsedURL), get(parsedURL.query, "dir").value_or("")),
fragment);
}
}
std::optional<std::pair<FlakeRef, std::string>> maybeParseFlakeRefWithFragment(
const std::string & url, const std::optional<Path> & baseDir)
{
try {
return parseFlakeRefWithFragment(url, baseDir);
} catch (Error & e) {
return {};
}
}
FlakeRef FlakeRef::fromAttrs(const fetchers::Attrs & attrs)
{
auto attrs2(attrs);
attrs2.erase("dir");
return FlakeRef(
fetchers::Input::fromAttrs(std::move(attrs2)),
fetchers::maybeGetStrAttr(attrs, "dir").value_or(""));
}
std::pair<fetchers::Tree, FlakeRef> FlakeRef::fetchTree(ref<Store> store) const
{
auto [tree, lockedInput] = input.fetch(store);
return {std::move(tree), FlakeRef(std::move(lockedInput), subdir)};
}
}

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#pragma once
#include "types.hh"
#include "hash.hh"
#include "fetchers.hh"
#include <variant>
namespace nix {
class Store;
typedef std::string FlakeId;
struct FlakeRef
{
fetchers::Input input;
Path subdir;
bool operator==(const FlakeRef & other) const;
FlakeRef(fetchers::Input && input, const Path & subdir)
: input(std::move(input)), subdir(subdir)
{ }
// FIXME: change to operator <<.
std::string to_string() const;
fetchers::Attrs toAttrs() const;
FlakeRef resolve(ref<Store> store) const;
static FlakeRef fromAttrs(const fetchers::Attrs & attrs);
std::pair<fetchers::Tree, FlakeRef> fetchTree(ref<Store> store) const;
};
std::ostream & operator << (std::ostream & str, const FlakeRef & flakeRef);
FlakeRef parseFlakeRef(
const std::string & url, const std::optional<Path> & baseDir = {}, bool allowMissing = false);
std::optional<FlakeRef> maybeParseFlake(
const std::string & url, const std::optional<Path> & baseDir = {});
std::pair<FlakeRef, std::string> parseFlakeRefWithFragment(
const std::string & url, const std::optional<Path> & baseDir = {}, bool allowMissing = false);
std::optional<std::pair<FlakeRef, std::string>> maybeParseFlakeRefWithFragment(
const std::string & url, const std::optional<Path> & baseDir = {});
}

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#include "lockfile.hh"
#include "store-api.hh"
#include <nlohmann/json.hpp>
namespace nix::flake {
FlakeRef getFlakeRef(
const nlohmann::json & json,
const char * attr,
const char * info)
{
auto i = json.find(attr);
if (i != json.end()) {
auto attrs = jsonToAttrs(*i);
// FIXME: remove when we drop support for version 5.
if (info) {
auto j = json.find(info);
if (j != json.end()) {
for (auto k : jsonToAttrs(*j))
attrs.insert_or_assign(k.first, k.second);
}
}
return FlakeRef::fromAttrs(attrs);
}
throw Error("attribute '%s' missing in lock file", attr);
}
LockedNode::LockedNode(const nlohmann::json & json)
: lockedRef(getFlakeRef(json, "locked", "info"))
, originalRef(getFlakeRef(json, "original", nullptr))
, isFlake(json.find("flake") != json.end() ? (bool) json["flake"] : true)
{
if (!lockedRef.input.isImmutable())
throw Error("lockfile contains mutable lock '%s'", attrsToJson(lockedRef.input.toAttrs()));
}
StorePath LockedNode::computeStorePath(Store & store) const
{
return lockedRef.input.computeStorePath(store);
}
std::shared_ptr<Node> LockFile::findInput(const InputPath & path)
{
auto pos = root;
if (!pos) return {};
for (auto & elem : path) {
if (auto i = get(pos->inputs, elem)) {
if (auto node = std::get_if<0>(&*i))
pos = *node;
else if (auto follows = std::get_if<1>(&*i)) {
pos = findInput(*follows);
if (!pos) return {};
}
} else
return {};
}
return pos;
}
LockFile::LockFile(const nlohmann::json & json, const Path & path)
{
auto version = json.value("version", 0);
if (version < 5 || version > 7)
throw Error("lock file '%s' has unsupported version %d", path, version);
std::unordered_map<std::string, std::shared_ptr<Node>> nodeMap;
std::function<void(Node & node, const nlohmann::json & jsonNode)> getInputs;
getInputs = [&](Node & node, const nlohmann::json & jsonNode)
{
if (jsonNode.find("inputs") == jsonNode.end()) return;
for (auto & i : jsonNode["inputs"].items()) {
if (i.value().is_array()) {
InputPath path;
for (auto & j : i.value())
path.push_back(j);
node.inputs.insert_or_assign(i.key(), path);
} else {
std::string inputKey = i.value();
auto k = nodeMap.find(inputKey);
if (k == nodeMap.end()) {
auto jsonNode2 = json["nodes"][inputKey];
auto input = std::make_shared<LockedNode>(jsonNode2);
k = nodeMap.insert_or_assign(inputKey, input).first;
getInputs(*input, jsonNode2);
}
if (auto child = std::dynamic_pointer_cast<LockedNode>(k->second))
node.inputs.insert_or_assign(i.key(), child);
else
// FIXME: replace by follows node
throw Error("lock file contains cycle to root node");
}
}
};
std::string rootKey = json["root"];
nodeMap.insert_or_assign(rootKey, root);
getInputs(*root, json["nodes"][rootKey]);
// FIXME: check that there are no cycles in version >= 7. Cycles
// between inputs are only possible using 'follows' indirections.
// Once we drop support for version <= 6, we can simplify the code
// a bit since we don't need to worry about cycles.
}
nlohmann::json LockFile::toJson() const
{
nlohmann::json nodes;
std::unordered_map<std::shared_ptr<const Node>, std::string> nodeKeys;
std::unordered_set<std::string> keys;
std::function<std::string(const std::string & key, std::shared_ptr<const Node> node)> dumpNode;
dumpNode = [&](std::string key, std::shared_ptr<const Node> node) -> std::string
{
auto k = nodeKeys.find(node);
if (k != nodeKeys.end())
return k->second;
if (!keys.insert(key).second) {
for (int n = 2; ; ++n) {
auto k = fmt("%s_%d", key, n);
if (keys.insert(k).second) {
key = k;
break;
}
}
}
nodeKeys.insert_or_assign(node, key);
auto n = nlohmann::json::object();
if (!node->inputs.empty()) {
auto inputs = nlohmann::json::object();
for (auto & i : node->inputs) {
if (auto child = std::get_if<0>(&i.second)) {
inputs[i.first] = dumpNode(i.first, *child);
} else if (auto follows = std::get_if<1>(&i.second)) {
auto arr = nlohmann::json::array();
for (auto & x : *follows)
arr.push_back(x);
inputs[i.first] = std::move(arr);
}
}
n["inputs"] = std::move(inputs);
}
if (auto lockedNode = std::dynamic_pointer_cast<const LockedNode>(node)) {
n["original"] = fetchers::attrsToJson(lockedNode->originalRef.toAttrs());
n["locked"] = fetchers::attrsToJson(lockedNode->lockedRef.toAttrs());
if (!lockedNode->isFlake) n["flake"] = false;
}
nodes[key] = std::move(n);
return key;
};
nlohmann::json json;
json["version"] = 7;
json["root"] = dumpNode("root", root);
json["nodes"] = std::move(nodes);
return json;
}
std::string LockFile::to_string() const
{
return toJson().dump(2);
}
LockFile LockFile::read(const Path & path)
{
if (!pathExists(path)) return LockFile();
return LockFile(nlohmann::json::parse(readFile(path)), path);
}
std::ostream & operator <<(std::ostream & stream, const LockFile & lockFile)
{
stream << lockFile.toJson().dump(2);
return stream;
}
void LockFile::write(const Path & path) const
{
createDirs(dirOf(path));
writeFile(path, fmt("%s\n", *this));
}
bool LockFile::isImmutable() const
{
std::unordered_set<std::shared_ptr<const Node>> nodes;
std::function<void(std::shared_ptr<const Node> node)> visit;
visit = [&](std::shared_ptr<const Node> node)
{
if (!nodes.insert(node).second) return;
for (auto & i : node->inputs)
if (auto child = std::get_if<0>(&i.second))
visit(*child);
};
visit(root);
for (auto & i : nodes) {
if (i == root) continue;
auto lockedNode = std::dynamic_pointer_cast<const LockedNode>(i);
if (lockedNode && !lockedNode->lockedRef.input.isImmutable()) return false;
}
return true;
}
bool LockFile::operator ==(const LockFile & other) const
{
// FIXME: slow
return toJson() == other.toJson();
}
InputPath parseInputPath(std::string_view s)
{
InputPath path;
for (auto & elem : tokenizeString<std::vector<std::string>>(s, "/")) {
if (!std::regex_match(elem, flakeIdRegex))
throw UsageError("invalid flake input path element '%s'", elem);
path.push_back(elem);
}
return path;
}
std::map<InputPath, Node::Edge> LockFile::getAllInputs() const
{
std::unordered_set<std::shared_ptr<Node>> done;
std::map<InputPath, Node::Edge> res;
std::function<void(const InputPath & prefix, std::shared_ptr<Node> node)> recurse;
recurse = [&](const InputPath & prefix, std::shared_ptr<Node> node)
{
if (!done.insert(node).second) return;
for (auto &[id, input] : node->inputs) {
auto inputPath(prefix);
inputPath.push_back(id);
res.emplace(inputPath, input);
if (auto child = std::get_if<0>(&input))
recurse(inputPath, *child);
}
};
recurse({}, root);
return res;
}
std::ostream & operator <<(std::ostream & stream, const Node::Edge & edge)
{
if (auto node = std::get_if<0>(&edge))
stream << "'" << (*node)->lockedRef << "'";
else if (auto follows = std::get_if<1>(&edge))
stream << fmt("follows '%s'", printInputPath(*follows));
return stream;
}
static bool equals(const Node::Edge & e1, const Node::Edge & e2)
{
if (auto n1 = std::get_if<0>(&e1))
if (auto n2 = std::get_if<0>(&e2))
return (*n1)->lockedRef == (*n2)->lockedRef;
if (auto f1 = std::get_if<1>(&e1))
if (auto f2 = std::get_if<1>(&e2))
return *f1 == *f2;
return false;
}
std::string LockFile::diff(const LockFile & oldLocks, const LockFile & newLocks)
{
auto oldFlat = oldLocks.getAllInputs();
auto newFlat = newLocks.getAllInputs();
auto i = oldFlat.begin();
auto j = newFlat.begin();
std::string res;
while (i != oldFlat.end() || j != newFlat.end()) {
if (j != newFlat.end() && (i == oldFlat.end() || i->first > j->first)) {
res += fmt("* Added '%s': %s\n", printInputPath(j->first), j->second);
++j;
} else if (i != oldFlat.end() && (j == newFlat.end() || i->first < j->first)) {
res += fmt("* Removed '%s'\n", printInputPath(i->first));
++i;
} else {
if (!equals(i->second, j->second)) {
res += fmt("* Updated '%s': %s -> %s\n",
printInputPath(i->first),
i->second,
j->second);
}
++i;
++j;
}
}
return res;
}
void LockFile::check()
{
auto inputs = getAllInputs();
for (auto & [inputPath, input] : inputs) {
if (auto follows = std::get_if<1>(&input)) {
if (!follows->empty() && !get(inputs, *follows))
throw Error("input '%s' follows a non-existent input '%s'",
printInputPath(inputPath),
printInputPath(*follows));
}
}
}
void check();
std::string printInputPath(const InputPath & path)
{
return concatStringsSep("/", path);
}
}

View file

@ -0,0 +1,85 @@
#pragma once
#include "flakeref.hh"
#include <nlohmann/json_fwd.hpp>
namespace nix {
class Store;
struct StorePath;
}
namespace nix::flake {
using namespace fetchers;
typedef std::vector<FlakeId> InputPath;
struct LockedNode;
/* A node in the lock file. It has outgoing edges to other nodes (its
inputs). Only the root node has this type; all other nodes have
type LockedNode. */
struct Node : std::enable_shared_from_this<Node>
{
typedef std::variant<std::shared_ptr<LockedNode>, InputPath> Edge;
std::map<FlakeId, Edge> inputs;
virtual ~Node() { }
};
/* A non-root node in the lock file. */
struct LockedNode : Node
{
FlakeRef lockedRef, originalRef;
bool isFlake = true;
LockedNode(
const FlakeRef & lockedRef,
const FlakeRef & originalRef,
bool isFlake = true)
: lockedRef(lockedRef), originalRef(originalRef), isFlake(isFlake)
{ }
LockedNode(const nlohmann::json & json);
StorePath computeStorePath(Store & store) const;
};
struct LockFile
{
std::shared_ptr<Node> root = std::make_shared<Node>();
LockFile() {};
LockFile(const nlohmann::json & json, const Path & path);
nlohmann::json toJson() const;
std::string to_string() const;
static LockFile read(const Path & path);
void write(const Path & path) const;
bool isImmutable() const;
bool operator ==(const LockFile & other) const;
std::shared_ptr<Node> findInput(const InputPath & path);
std::map<InputPath, Node::Edge> getAllInputs() const;
static std::string diff(const LockFile & oldLocks, const LockFile & newLocks);
/* Check that every 'follows' input target exists. */
void check();
};
std::ostream & operator <<(std::ostream & stream, const LockFile & lockFile);
InputPath parseInputPath(std::string_view s);
std::string printInputPath(const InputPath & path);
}

View file

@ -39,7 +39,7 @@ DrvInfo::DrvInfo(EvalState & state, ref<Store> store, const std::string & drvPat
if (i == drv.outputs.end()) if (i == drv.outputs.end())
throw Error("derivation '%s' does not have output '%s'", store->printStorePath(drvPath), outputName); throw Error("derivation '%s' does not have output '%s'", store->printStorePath(drvPath), outputName);
outPath = store->printStorePath(i->second.path); outPath = store->printStorePath(i->second.path(*store, drv.name));
} }

View file

@ -4,7 +4,12 @@ libexpr_NAME = libnixexpr
libexpr_DIR := $(d) libexpr_DIR := $(d)
libexpr_SOURCES := $(wildcard $(d)/*.cc) $(wildcard $(d)/primops/*.cc) $(d)/lexer-tab.cc $(d)/parser-tab.cc libexpr_SOURCES := \
$(wildcard $(d)/*.cc) \
$(wildcard $(d)/primops/*.cc) \
$(wildcard $(d)/flake/*.cc) \
$(d)/lexer-tab.cc \
$(d)/parser-tab.cc
libexpr_CXXFLAGS += -I src/libutil -I src/libstore -I src/libfetchers -I src/libmain -I src/libexpr libexpr_CXXFLAGS += -I src/libutil -I src/libstore -I src/libfetchers -I src/libmain -I src/libexpr
@ -34,4 +39,9 @@ dist-files += $(d)/parser-tab.cc $(d)/parser-tab.hh $(d)/lexer-tab.cc $(d)/lexer
$(eval $(call install-file-in, $(d)/nix-expr.pc, $(prefix)/lib/pkgconfig, 0644)) $(eval $(call install-file-in, $(d)/nix-expr.pc, $(prefix)/lib/pkgconfig, 0644))
$(foreach i, $(wildcard src/libexpr/flake/*.hh), \
$(eval $(call install-file-in, $(i), $(includedir)/nix/flake, 0644)))
$(d)/primops.cc: $(d)/imported-drv-to-derivation.nix.gen.hh $(d)/primops.cc: $(d)/imported-drv-to-derivation.nix.gen.hh
$(d)/flake/flake.cc: $(d)/flake/call-flake.nix.gen.hh

View file

@ -197,7 +197,22 @@ std::ostream & operator << (std::ostream & str, const Pos & pos)
if (!pos) if (!pos)
str << "undefined position"; str << "undefined position";
else else
str << (format(ANSI_BOLD "%1%" ANSI_NORMAL ":%2%:%3%") % (string) pos.file % pos.line % pos.column).str(); {
auto f = format(ANSI_BOLD "%1%" ANSI_NORMAL ":%2%:%3%");
switch (pos.origin) {
case foFile:
f % (string) pos.file;
break;
case foStdin:
case foString:
f % "(string)";
break;
default:
throw Error("unhandled Pos origin!");
}
str << (f % pos.line % pos.column).str();
}
return str; return str;
} }
@ -270,7 +285,7 @@ void ExprVar::bindVars(const StaticEnv & env)
if (withLevel == -1) if (withLevel == -1)
throw UndefinedVarError({ throw UndefinedVarError({
.hint = hintfmt("undefined variable '%1%'", name), .hint = hintfmt("undefined variable '%1%'", name),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
fromWith = true; fromWith = true;
this->level = withLevel; this->level = withLevel;

View file

@ -24,11 +24,12 @@ MakeError(RestrictedPathError, Error);
struct Pos struct Pos
{ {
FileOrigin origin;
Symbol file; Symbol file;
unsigned int line, column; unsigned int line, column;
Pos() : line(0), column(0) { }; Pos() : origin(foString), line(0), column(0) { };
Pos(const Symbol & file, unsigned int line, unsigned int column) Pos(FileOrigin origin, const Symbol & file, unsigned int line, unsigned int column)
: file(file), line(line), column(column) { }; : origin(origin), file(file), line(line), column(column) { };
operator bool() const operator bool() const
{ {
return line != 0; return line != 0;
@ -238,7 +239,7 @@ struct ExprLambda : Expr
if (!arg.empty() && formals && formals->argNames.find(arg) != formals->argNames.end()) if (!arg.empty() && formals && formals->argNames.find(arg) != formals->argNames.end())
throw ParseError({ throw ParseError({
.hint = hintfmt("duplicate formal function argument '%1%'", arg), .hint = hintfmt("duplicate formal function argument '%1%'", arg),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
}; };
void setName(Symbol & name); void setName(Symbol & name);

View file

@ -30,7 +30,8 @@ namespace nix {
SymbolTable & symbols; SymbolTable & symbols;
Expr * result; Expr * result;
Path basePath; Path basePath;
Symbol path; Symbol file;
FileOrigin origin;
ErrorInfo error; ErrorInfo error;
Symbol sLetBody; Symbol sLetBody;
ParseData(EvalState & state) ParseData(EvalState & state)
@ -67,16 +68,15 @@ static void dupAttr(const AttrPath & attrPath, const Pos & pos, const Pos & prev
throw ParseError({ throw ParseError({
.hint = hintfmt("attribute '%1%' already defined at %2%", .hint = hintfmt("attribute '%1%' already defined at %2%",
showAttrPath(attrPath), prevPos), showAttrPath(attrPath), prevPos),
.nixCode = NixCode { .errPos = pos }, .errPos = pos
}); });
} }
static void dupAttr(Symbol attr, const Pos & pos, const Pos & prevPos) static void dupAttr(Symbol attr, const Pos & pos, const Pos & prevPos)
{ {
throw ParseError({ throw ParseError({
.hint = hintfmt("attribute '%1%' already defined at %2%", attr, prevPos), .hint = hintfmt("attribute '%1%' already defined at %2%", attr, prevPos),
.nixCode = NixCode { .errPos = pos }, .errPos = pos
}); });
} }
@ -148,7 +148,7 @@ static void addFormal(const Pos & pos, Formals * formals, const Formal & formal)
throw ParseError({ throw ParseError({
.hint = hintfmt("duplicate formal function argument '%1%'", .hint = hintfmt("duplicate formal function argument '%1%'",
formal.name), formal.name),
.nixCode = NixCode { .errPos = pos }, .errPos = pos
}); });
formals->formals.push_front(formal); formals->formals.push_front(formal);
} }
@ -246,7 +246,7 @@ static Expr * stripIndentation(const Pos & pos, SymbolTable & symbols, vector<Ex
static inline Pos makeCurPos(const YYLTYPE & loc, ParseData * data) static inline Pos makeCurPos(const YYLTYPE & loc, ParseData * data)
{ {
return Pos(data->path, loc.first_line, loc.first_column); return Pos(data->origin, data->file, loc.first_line, loc.first_column);
} }
#define CUR_POS makeCurPos(*yylocp, data) #define CUR_POS makeCurPos(*yylocp, data)
@ -259,7 +259,7 @@ void yyerror(YYLTYPE * loc, yyscan_t scanner, ParseData * data, const char * err
{ {
data->error = { data->error = {
.hint = hintfmt(error), .hint = hintfmt(error),
.nixCode = NixCode { .errPos = makeCurPos(*loc, data) } .errPos = makeCurPos(*loc, data)
}; };
} }
@ -339,7 +339,7 @@ expr_function
{ if (!$2->dynamicAttrs.empty()) { if (!$2->dynamicAttrs.empty())
throw ParseError({ throw ParseError({
.hint = hintfmt("dynamic attributes not allowed in let"), .hint = hintfmt("dynamic attributes not allowed in let"),
.nixCode = NixCode { .errPos = CUR_POS }, .errPos = CUR_POS
}); });
$$ = new ExprLet($2, $4); $$ = new ExprLet($2, $4);
} }
@ -419,7 +419,7 @@ expr_simple
if (noURLLiterals) if (noURLLiterals)
throw ParseError({ throw ParseError({
.hint = hintfmt("URL literals are disabled"), .hint = hintfmt("URL literals are disabled"),
.nixCode = NixCode { .errPos = CUR_POS } .errPos = CUR_POS
}); });
$$ = new ExprString(data->symbols.create($1)); $$ = new ExprString(data->symbols.create($1));
} }
@ -492,7 +492,7 @@ attrs
} else } else
throw ParseError({ throw ParseError({
.hint = hintfmt("dynamic attributes not allowed in inherit"), .hint = hintfmt("dynamic attributes not allowed in inherit"),
.nixCode = NixCode { .errPos = makeCurPos(@2, data) }, .errPos = makeCurPos(@2, data)
}); });
} }
| { $$ = new AttrPath; } | { $$ = new AttrPath; }
@ -569,13 +569,24 @@ formal
namespace nix { namespace nix {
Expr * EvalState::parse(const char * text, Expr * EvalState::parse(const char * text, FileOrigin origin,
const Path & path, const Path & basePath, StaticEnv & staticEnv) const Path & path, const Path & basePath, StaticEnv & staticEnv)
{ {
yyscan_t scanner; yyscan_t scanner;
ParseData data(*this); ParseData data(*this);
data.origin = origin;
switch (origin) {
case foFile:
data.file = data.symbols.create(path);
break;
case foStdin:
case foString:
data.file = data.symbols.create(text);
break;
default:
assert(false);
}
data.basePath = basePath; data.basePath = basePath;
data.path = data.symbols.create(path);
yylex_init(&scanner); yylex_init(&scanner);
yy_scan_string(text, scanner); yy_scan_string(text, scanner);
@ -625,13 +636,13 @@ Expr * EvalState::parseExprFromFile(const Path & path)
Expr * EvalState::parseExprFromFile(const Path & path, StaticEnv & staticEnv) Expr * EvalState::parseExprFromFile(const Path & path, StaticEnv & staticEnv)
{ {
return parse(readFile(path).c_str(), path, dirOf(path), staticEnv); return parse(readFile(path).c_str(), foFile, path, dirOf(path), staticEnv);
} }
Expr * EvalState::parseExprFromString(std::string_view s, const Path & basePath, StaticEnv & staticEnv) Expr * EvalState::parseExprFromString(std::string_view s, const Path & basePath, StaticEnv & staticEnv)
{ {
return parse(s.data(), "(string)", basePath, staticEnv); return parse(s.data(), foString, "", basePath, staticEnv);
} }
@ -644,7 +655,7 @@ Expr * EvalState::parseExprFromString(std::string_view s, const Path & basePath)
Expr * EvalState::parseStdin() Expr * EvalState::parseStdin()
{ {
//Activity act(*logger, lvlTalkative, format("parsing standard input")); //Activity act(*logger, lvlTalkative, format("parsing standard input"));
return parseExprFromString(drainFD(0), absPath(".")); return parse(drainFD(0).data(), foStdin, "", absPath("."), staticBaseEnv);
} }
@ -693,7 +704,7 @@ Path EvalState::findFile(SearchPath & searchPath, const string & path, const Pos
? "cannot look up '<%s>' in pure evaluation mode (use '--impure' to override)" ? "cannot look up '<%s>' in pure evaluation mode (use '--impure' to override)"
: "file '%s' was not found in the Nix search path (add it using $NIX_PATH or -I)", : "file '%s' was not found in the Nix search path (add it using $NIX_PATH or -I)",
path), path),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} }
@ -708,7 +719,7 @@ std::pair<bool, std::string> EvalState::resolveSearchPathElem(const SearchPathEl
if (isUri(elem.second)) { if (isUri(elem.second)) {
try { try {
res = { true, store->toRealPath(fetchers::downloadTarball( res = { true, store->toRealPath(fetchers::downloadTarball(
store, resolveUri(elem.second), "source", false).storePath) }; store, resolveUri(elem.second), "source", false).first.storePath) };
} catch (FileTransferError & e) { } catch (FileTransferError & e) {
logWarning({ logWarning({
.name = "Entry download", .name = "Entry download",

View file

@ -30,18 +30,6 @@ namespace nix {
*************************************************************/ *************************************************************/
/* Decode a context string !<name>!<path> into a pair <path,
name>. */
std::pair<string, string> decodeContext(const string & s)
{
if (s.at(0) == '!') {
size_t index = s.find("!", 1);
return std::pair<string, string>(string(s, index + 1), string(s, 1, index - 1));
} else
return std::pair<string, string>(s.at(0) == '/' ? s : string(s, 1), "");
}
InvalidPathError::InvalidPathError(const Path & path) : InvalidPathError::InvalidPathError(const Path & path) :
EvalError("path '%s' is not valid", path), path(path) {} EvalError("path '%s' is not valid", path), path(path) {}
@ -64,7 +52,7 @@ void EvalState::realiseContext(const PathSet & context)
DerivationOutputs::iterator i = drv.outputs.find(outputName); DerivationOutputs::iterator i = drv.outputs.find(outputName);
if (i == drv.outputs.end()) if (i == drv.outputs.end())
throw Error("derivation '%s' does not have an output named '%s'", ctxS, outputName); throw Error("derivation '%s' does not have an output named '%s'", ctxS, outputName);
allowedPaths->insert(store->printStorePath(i->second.path)); allowedPaths->insert(store->printStorePath(i->second.path(*store, drv.name)));
} }
} }
} }
@ -77,7 +65,7 @@ void EvalState::realiseContext(const PathSet & context)
/* For performance, prefetch all substitute info. */ /* For performance, prefetch all substitute info. */
StorePathSet willBuild, willSubstitute, unknown; StorePathSet willBuild, willSubstitute, unknown;
unsigned long long downloadSize, narSize; uint64_t downloadSize, narSize;
store->queryMissing(drvs, willBuild, willSubstitute, unknown, downloadSize, narSize); store->queryMissing(drvs, willBuild, willSubstitute, unknown, downloadSize, narSize);
store->buildPaths(drvs); store->buildPaths(drvs);
@ -96,15 +84,24 @@ static void prim_scopedImport(EvalState & state, const Pos & pos, Value * * args
} catch (InvalidPathError & e) { } catch (InvalidPathError & e) {
throw EvalError({ throw EvalError({
.hint = hintfmt("cannot import '%1%', since path '%2%' is not valid", path, e.path), .hint = hintfmt("cannot import '%1%', since path '%2%' is not valid", path, e.path),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} }
Path realPath = state.checkSourcePath(state.toRealPath(path, context)); Path realPath = state.checkSourcePath(state.toRealPath(path, context));
// FIXME // FIXME
if (state.store->isStorePath(path) && state.store->isValidPath(state.store->parseStorePath(path)) && isDerivation(path)) { auto isValidDerivationInStore = [&]() -> std::optional<StorePath> {
Derivation drv = readDerivation(*state.store, realPath); if (!state.store->isStorePath(path))
return std::nullopt;
auto storePath = state.store->parseStorePath(path);
if (!(state.store->isValidPath(storePath) && isDerivation(path)))
return std::nullopt;
return storePath;
};
if (auto optStorePath = isValidDerivationInStore()) {
auto storePath = *optStorePath;
Derivation drv = readDerivation(*state.store, realPath, Derivation::nameFromPath(storePath));
Value & w = *state.allocValue(); Value & w = *state.allocValue();
state.mkAttrs(w, 3 + drv.outputs.size()); state.mkAttrs(w, 3 + drv.outputs.size());
Value * v2 = state.allocAttr(w, state.sDrvPath); Value * v2 = state.allocAttr(w, state.sDrvPath);
@ -118,7 +115,7 @@ static void prim_scopedImport(EvalState & state, const Pos & pos, Value * * args
for (const auto & o : drv.outputs) { for (const auto & o : drv.outputs) {
v2 = state.allocAttr(w, state.symbols.create(o.first)); v2 = state.allocAttr(w, state.symbols.create(o.first));
mkString(*v2, state.store->printStorePath(o.second.path), {"!" + o.first + "!" + path}); mkString(*v2, state.store->printStorePath(o.second.path(*state.store, drv.name)), {"!" + o.first + "!" + path});
outputsVal->listElems()[outputs_index] = state.allocValue(); outputsVal->listElems()[outputs_index] = state.allocValue();
mkString(*(outputsVal->listElems()[outputs_index++]), o.first); mkString(*(outputsVal->listElems()[outputs_index++]), o.first);
} }
@ -177,7 +174,7 @@ void prim_importNative(EvalState & state, const Pos & pos, Value * * args, Value
.hint = hintfmt( .hint = hintfmt(
"cannot import '%1%', since path '%2%' is not valid", "cannot import '%1%', since path '%2%' is not valid",
path, e.path), path, e.path),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} }
@ -215,7 +212,7 @@ void prim_exec(EvalState & state, const Pos & pos, Value * * args, Value & v)
if (count == 0) { if (count == 0) {
throw EvalError({ throw EvalError({
.hint = hintfmt("at least one argument to 'exec' required"), .hint = hintfmt("at least one argument to 'exec' required"),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} }
PathSet context; PathSet context;
@ -230,7 +227,7 @@ void prim_exec(EvalState & state, const Pos & pos, Value * * args, Value & v)
throw EvalError({ throw EvalError({
.hint = hintfmt("cannot execute '%1%', since path '%2%' is not valid", .hint = hintfmt("cannot execute '%1%', since path '%2%' is not valid",
program, e.path), program, e.path),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} }
@ -239,13 +236,13 @@ void prim_exec(EvalState & state, const Pos & pos, Value * * args, Value & v)
try { try {
parsed = state.parseExprFromString(output, pos.file); parsed = state.parseExprFromString(output, pos.file);
} catch (Error & e) { } catch (Error & e) {
e.addPrefix(fmt("While parsing the output from '%1%', at %2%\n", program, pos)); e.addTrace(pos, "While parsing the output from '%1%'", program);
throw; throw;
} }
try { try {
state.eval(parsed, v); state.eval(parsed, v);
} catch (Error & e) { } catch (Error & e) {
e.addPrefix(fmt("While evaluating the output from '%1%', at %2%\n", program, pos)); e.addTrace(pos, "While evaluating the output from '%1%'", program);
throw; throw;
} }
} }
@ -385,7 +382,7 @@ static void prim_genericClosure(EvalState & state, const Pos & pos, Value * * ar
if (startSet == args[0]->attrs->end()) if (startSet == args[0]->attrs->end())
throw EvalError({ throw EvalError({
.hint = hintfmt("attribute 'startSet' required"), .hint = hintfmt("attribute 'startSet' required"),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
state.forceList(*startSet->value, pos); state.forceList(*startSet->value, pos);
@ -399,7 +396,7 @@ static void prim_genericClosure(EvalState & state, const Pos & pos, Value * * ar
if (op == args[0]->attrs->end()) if (op == args[0]->attrs->end())
throw EvalError({ throw EvalError({
.hint = hintfmt("attribute 'operator' required"), .hint = hintfmt("attribute 'operator' required"),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
state.forceValue(*op->value, pos); state.forceValue(*op->value, pos);
@ -421,7 +418,7 @@ static void prim_genericClosure(EvalState & state, const Pos & pos, Value * * ar
if (key == e->attrs->end()) if (key == e->attrs->end())
throw EvalError({ throw EvalError({
.hint = hintfmt("attribute 'key' required"), .hint = hintfmt("attribute 'key' required"),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
state.forceValue(*key->value, pos); state.forceValue(*key->value, pos);
@ -471,7 +468,7 @@ static void prim_addErrorContext(EvalState & state, const Pos & pos, Value * * a
v = *args[1]; v = *args[1];
} catch (Error & e) { } catch (Error & e) {
PathSet context; PathSet context;
e.addPrefix(format("%1%\n") % state.coerceToString(pos, *args[0], context)); e.addTrace(std::nullopt, state.coerceToString(pos, *args[0], context));
throw; throw;
} }
} }
@ -556,14 +553,14 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
if (attr == args[0]->attrs->end()) if (attr == args[0]->attrs->end())
throw EvalError({ throw EvalError({
.hint = hintfmt("required attribute 'name' missing"), .hint = hintfmt("required attribute 'name' missing"),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
string drvName; string drvName;
Pos & posDrvName(*attr->pos); Pos & posDrvName(*attr->pos);
try { try {
drvName = state.forceStringNoCtx(*attr->value, pos); drvName = state.forceStringNoCtx(*attr->value, pos);
} catch (Error & e) { } catch (Error & e) {
e.addPrefix(fmt("while evaluating the derivation attribute 'name' at %1%:\n", posDrvName)); e.addTrace(posDrvName, "while evaluating the derivation attribute 'name'");
throw; throw;
} }
@ -582,6 +579,7 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
/* Build the derivation expression by processing the attributes. */ /* Build the derivation expression by processing the attributes. */
Derivation drv; Derivation drv;
drv.name = drvName;
PathSet context; PathSet context;
@ -603,7 +601,7 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
else else
throw EvalError({ throw EvalError({
.hint = hintfmt("invalid value '%s' for 'outputHashMode' attribute", s), .hint = hintfmt("invalid value '%s' for 'outputHashMode' attribute", s),
.nixCode = NixCode { .errPos = posDrvName } .errPos = posDrvName
}); });
}; };
@ -613,7 +611,7 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
if (outputs.find(j) != outputs.end()) if (outputs.find(j) != outputs.end())
throw EvalError({ throw EvalError({
.hint = hintfmt("duplicate derivation output '%1%'", j), .hint = hintfmt("duplicate derivation output '%1%'", j),
.nixCode = NixCode { .errPos = posDrvName } .errPos = posDrvName
}); });
/* !!! Check whether j is a valid attribute /* !!! Check whether j is a valid attribute
name. */ name. */
@ -623,14 +621,14 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
if (j == "drv") if (j == "drv")
throw EvalError({ throw EvalError({
.hint = hintfmt("invalid derivation output name 'drv'" ), .hint = hintfmt("invalid derivation output name 'drv'" ),
.nixCode = NixCode { .errPos = posDrvName } .errPos = posDrvName
}); });
outputs.insert(j); outputs.insert(j);
} }
if (outputs.empty()) if (outputs.empty())
throw EvalError({ throw EvalError({
.hint = hintfmt("derivation cannot have an empty set of outputs"), .hint = hintfmt("derivation cannot have an empty set of outputs"),
.nixCode = NixCode { .errPos = posDrvName } .errPos = posDrvName
}); });
}; };
@ -696,8 +694,9 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
} }
} catch (Error & e) { } catch (Error & e) {
e.addPrefix(format("while evaluating the attribute '%1%' of the derivation '%2%' at %3%:\n") e.addTrace(posDrvName,
% key % drvName % posDrvName); "while evaluating the attribute '%1%' of the derivation '%2%'",
key, drvName);
throw; throw;
} }
} }
@ -745,20 +744,20 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
if (drv.builder == "") if (drv.builder == "")
throw EvalError({ throw EvalError({
.hint = hintfmt("required attribute 'builder' missing"), .hint = hintfmt("required attribute 'builder' missing"),
.nixCode = NixCode { .errPos = posDrvName } .errPos = posDrvName
}); });
if (drv.platform == "") if (drv.platform == "")
throw EvalError({ throw EvalError({
.hint = hintfmt("required attribute 'system' missing"), .hint = hintfmt("required attribute 'system' missing"),
.nixCode = NixCode { .errPos = posDrvName } .errPos = posDrvName
}); });
/* Check whether the derivation name is valid. */ /* Check whether the derivation name is valid. */
if (isDerivation(drvName)) if (isDerivation(drvName))
throw EvalError({ throw EvalError({
.hint = hintfmt("derivation names are not allowed to end in '%s'", drvExtension), .hint = hintfmt("derivation names are not allowed to end in '%s'", drvExtension),
.nixCode = NixCode { .errPos = posDrvName } .errPos = posDrvName
}); });
if (outputHash) { if (outputHash) {
@ -766,7 +765,7 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
if (outputs.size() != 1 || *(outputs.begin()) != "out") if (outputs.size() != 1 || *(outputs.begin()) != "out")
throw Error({ throw Error({
.hint = hintfmt("multiple outputs are not supported in fixed-output derivations"), .hint = hintfmt("multiple outputs are not supported in fixed-output derivations"),
.nixCode = NixCode { .errPos = posDrvName } .errPos = posDrvName
}); });
std::optional<HashType> ht = parseHashTypeOpt(outputHashAlgo); std::optional<HashType> ht = parseHashTypeOpt(outputHashAlgo);
@ -775,11 +774,12 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
auto outPath = state.store->makeFixedOutputPath(ingestionMethod, h, drvName); auto outPath = state.store->makeFixedOutputPath(ingestionMethod, h, drvName);
if (!jsonObject) drv.env["out"] = state.store->printStorePath(outPath); if (!jsonObject) drv.env["out"] = state.store->printStorePath(outPath);
drv.outputs.insert_or_assign("out", DerivationOutput { drv.outputs.insert_or_assign("out", DerivationOutput {
.path = std::move(outPath), .output = DerivationOutputFixed {
.hash = FixedOutputHash { .hash = FixedOutputHash {
.method = ingestionMethod, .method = ingestionMethod,
.hash = std::move(h), .hash = std::move(h),
}, },
},
}); });
} }
@ -794,8 +794,9 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
if (!jsonObject) drv.env[i] = ""; if (!jsonObject) drv.env[i] = "";
drv.outputs.insert_or_assign(i, drv.outputs.insert_or_assign(i,
DerivationOutput { DerivationOutput {
.output = DerivationOutputInputAddressed {
.path = StorePath::dummy, .path = StorePath::dummy,
.hash = std::optional<FixedOutputHash> {}, },
}); });
} }
@ -806,8 +807,9 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
if (!jsonObject) drv.env[i] = state.store->printStorePath(outPath); if (!jsonObject) drv.env[i] = state.store->printStorePath(outPath);
drv.outputs.insert_or_assign(i, drv.outputs.insert_or_assign(i,
DerivationOutput { DerivationOutput {
.output = DerivationOutputInputAddressed {
.path = std::move(outPath), .path = std::move(outPath),
.hash = std::optional<FixedOutputHash>(), },
}); });
} }
} }
@ -828,7 +830,7 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
mkString(*state.allocAttr(v, state.sDrvPath), drvPathS, {"=" + drvPathS}); mkString(*state.allocAttr(v, state.sDrvPath), drvPathS, {"=" + drvPathS});
for (auto & i : drv.outputs) { for (auto & i : drv.outputs) {
mkString(*state.allocAttr(v, state.symbols.create(i.first)), mkString(*state.allocAttr(v, state.symbols.create(i.first)),
state.store->printStorePath(i.second.path), {"!" + i.first + "!" + drvPathS}); state.store->printStorePath(i.second.path(*state.store, drv.name)), {"!" + i.first + "!" + drvPathS});
} }
v.attrs->sort(); v.attrs->sort();
} }
@ -880,12 +882,12 @@ static void prim_storePath(EvalState & state, const Pos & pos, Value * * args, V
if (!state.store->isInStore(path)) if (!state.store->isInStore(path))
throw EvalError({ throw EvalError({
.hint = hintfmt("path '%1%' is not in the Nix store", path), .hint = hintfmt("path '%1%' is not in the Nix store", path),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
Path path2 = state.store->toStorePath(path); auto path2 = state.store->toStorePath(path).first;
if (!settings.readOnlyMode) if (!settings.readOnlyMode)
state.store->ensurePath(state.store->parseStorePath(path2)); state.store->ensurePath(path2);
context.insert(path2); context.insert(state.store->printStorePath(path2));
mkString(v, path, context); mkString(v, path, context);
} }
@ -901,7 +903,7 @@ static void prim_pathExists(EvalState & state, const Pos & pos, Value * * args,
.hint = hintfmt( .hint = hintfmt(
"cannot check the existence of '%1%', since path '%2%' is not valid", "cannot check the existence of '%1%', since path '%2%' is not valid",
path, e.path), path, e.path),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} }
@ -947,7 +949,7 @@ static void prim_readFile(EvalState & state, const Pos & pos, Value * * args, Va
} catch (InvalidPathError & e) { } catch (InvalidPathError & e) {
throw EvalError({ throw EvalError({
.hint = hintfmt("cannot read '%1%', since path '%2%' is not valid", path, e.path), .hint = hintfmt("cannot read '%1%', since path '%2%' is not valid", path, e.path),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} }
string s = readFile(state.checkSourcePath(state.toRealPath(path, context))); string s = readFile(state.checkSourcePath(state.toRealPath(path, context)));
@ -978,7 +980,7 @@ static void prim_findFile(EvalState & state, const Pos & pos, Value * * args, Va
if (i == v2.attrs->end()) if (i == v2.attrs->end())
throw EvalError({ throw EvalError({
.hint = hintfmt("attribute 'path' missing"), .hint = hintfmt("attribute 'path' missing"),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
PathSet context; PathSet context;
@ -989,7 +991,7 @@ static void prim_findFile(EvalState & state, const Pos & pos, Value * * args, Va
} catch (InvalidPathError & e) { } catch (InvalidPathError & e) {
throw EvalError({ throw EvalError({
.hint = hintfmt("cannot find '%1%', since path '%2%' is not valid", path, e.path), .hint = hintfmt("cannot find '%1%', since path '%2%' is not valid", path, e.path),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} }
@ -1009,7 +1011,7 @@ static void prim_hashFile(EvalState & state, const Pos & pos, Value * * args, Va
if (!ht) if (!ht)
throw Error({ throw Error({
.hint = hintfmt("unknown hash type '%1%'", type), .hint = hintfmt("unknown hash type '%1%'", type),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
PathSet context; // discarded PathSet context; // discarded
@ -1028,7 +1030,7 @@ static void prim_readDir(EvalState & state, const Pos & pos, Value * * args, Val
} catch (InvalidPathError & e) { } catch (InvalidPathError & e) {
throw EvalError({ throw EvalError({
.hint = hintfmt("cannot read '%1%', since path '%2%' is not valid", path, e.path), .hint = hintfmt("cannot read '%1%', since path '%2%' is not valid", path, e.path),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} }
@ -1104,7 +1106,7 @@ static void prim_toFile(EvalState & state, const Pos & pos, Value * * args, Valu
"in 'toFile': the file named '%1%' must not contain a reference " "in 'toFile': the file named '%1%' must not contain a reference "
"to a derivation but contains (%2%)", "to a derivation but contains (%2%)",
name, path), name, path),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
refs.insert(state.store->parseStorePath(path)); refs.insert(state.store->parseStorePath(path));
} }
@ -1122,7 +1124,7 @@ static void prim_toFile(EvalState & state, const Pos & pos, Value * * args, Valu
static void addPath(EvalState & state, const Pos & pos, const string & name, const Path & path_, static void addPath(EvalState & state, const Pos & pos, const string & name, const Path & path_,
Value * filterFun, FileIngestionMethod method, const Hash & expectedHash, Value & v) Value * filterFun, FileIngestionMethod method, const std::optional<Hash> expectedHash, Value & v)
{ {
const auto path = evalSettings.pureEval && expectedHash ? const auto path = evalSettings.pureEval && expectedHash ?
path_ : path_ :
@ -1153,7 +1155,7 @@ static void addPath(EvalState & state, const Pos & pos, const string & name, con
std::optional<StorePath> expectedStorePath; std::optional<StorePath> expectedStorePath;
if (expectedHash) if (expectedHash)
expectedStorePath = state.store->makeFixedOutputPath(method, expectedHash, name); expectedStorePath = state.store->makeFixedOutputPath(method, *expectedHash, name);
Path dstPath; Path dstPath;
if (!expectedHash || !state.store->isValidPath(*expectedStorePath)) { if (!expectedHash || !state.store->isValidPath(*expectedStorePath)) {
dstPath = state.store->printStorePath(settings.readOnlyMode dstPath = state.store->printStorePath(settings.readOnlyMode
@ -1175,7 +1177,7 @@ static void prim_filterSource(EvalState & state, const Pos & pos, Value * * args
if (!context.empty()) if (!context.empty())
throw EvalError({ throw EvalError({
.hint = hintfmt("string '%1%' cannot refer to other paths", path), .hint = hintfmt("string '%1%' cannot refer to other paths", path),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
state.forceValue(*args[0], pos); state.forceValue(*args[0], pos);
@ -1184,10 +1186,10 @@ static void prim_filterSource(EvalState & state, const Pos & pos, Value * * args
.hint = hintfmt( .hint = hintfmt(
"first argument in call to 'filterSource' is not a function but %1%", "first argument in call to 'filterSource' is not a function but %1%",
showType(*args[0])), showType(*args[0])),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
addPath(state, pos, std::string(baseNameOf(path)), path, args[0], FileIngestionMethod::Recursive, Hash(), v); addPath(state, pos, std::string(baseNameOf(path)), path, args[0], FileIngestionMethod::Recursive, std::nullopt, v);
} }
static void prim_path(EvalState & state, const Pos & pos, Value * * args, Value & v) static void prim_path(EvalState & state, const Pos & pos, Value * * args, Value & v)
@ -1197,7 +1199,7 @@ static void prim_path(EvalState & state, const Pos & pos, Value * * args, Value
string name; string name;
Value * filterFun = nullptr; Value * filterFun = nullptr;
auto method = FileIngestionMethod::Recursive; auto method = FileIngestionMethod::Recursive;
Hash expectedHash; Hash expectedHash(htSHA256);
for (auto & attr : *args[0]->attrs) { for (auto & attr : *args[0]->attrs) {
const string & n(attr.name); const string & n(attr.name);
@ -1207,7 +1209,7 @@ static void prim_path(EvalState & state, const Pos & pos, Value * * args, Value
if (!context.empty()) if (!context.empty())
throw EvalError({ throw EvalError({
.hint = hintfmt("string '%1%' cannot refer to other paths", path), .hint = hintfmt("string '%1%' cannot refer to other paths", path),
.nixCode = NixCode { .errPos = *attr.pos } .errPos = *attr.pos
}); });
} else if (attr.name == state.sName) } else if (attr.name == state.sName)
name = state.forceStringNoCtx(*attr.value, *attr.pos); name = state.forceStringNoCtx(*attr.value, *attr.pos);
@ -1221,13 +1223,13 @@ static void prim_path(EvalState & state, const Pos & pos, Value * * args, Value
else else
throw EvalError({ throw EvalError({
.hint = hintfmt("unsupported argument '%1%' to 'addPath'", attr.name), .hint = hintfmt("unsupported argument '%1%' to 'addPath'", attr.name),
.nixCode = NixCode { .errPos = *attr.pos } .errPos = *attr.pos
}); });
} }
if (path.empty()) if (path.empty())
throw EvalError({ throw EvalError({
.hint = hintfmt("'path' required"), .hint = hintfmt("'path' required"),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
if (name.empty()) if (name.empty())
name = baseNameOf(path); name = baseNameOf(path);
@ -1288,7 +1290,7 @@ void prim_getAttr(EvalState & state, const Pos & pos, Value * * args, Value & v)
if (i == args[1]->attrs->end()) if (i == args[1]->attrs->end())
throw EvalError({ throw EvalError({
.hint = hintfmt("attribute '%1%' missing", attr), .hint = hintfmt("attribute '%1%' missing", attr),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
// !!! add to stack trace? // !!! add to stack trace?
if (state.countCalls && i->pos) state.attrSelects[*i->pos]++; if (state.countCalls && i->pos) state.attrSelects[*i->pos]++;
@ -1371,7 +1373,7 @@ static void prim_listToAttrs(EvalState & state, const Pos & pos, Value * * args,
if (j == v2.attrs->end()) if (j == v2.attrs->end())
throw TypeError({ throw TypeError({
.hint = hintfmt("'name' attribute missing in a call to 'listToAttrs'"), .hint = hintfmt("'name' attribute missing in a call to 'listToAttrs'"),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
string name = state.forceStringNoCtx(*j->value, pos); string name = state.forceStringNoCtx(*j->value, pos);
@ -1381,7 +1383,7 @@ static void prim_listToAttrs(EvalState & state, const Pos & pos, Value * * args,
if (j2 == v2.attrs->end()) if (j2 == v2.attrs->end())
throw TypeError({ throw TypeError({
.hint = hintfmt("'value' attribute missing in a call to 'listToAttrs'"), .hint = hintfmt("'value' attribute missing in a call to 'listToAttrs'"),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
v.attrs->push_back(Attr(sym, j2->value, j2->pos)); v.attrs->push_back(Attr(sym, j2->value, j2->pos));
} }
@ -1457,7 +1459,7 @@ static void prim_functionArgs(EvalState & state, const Pos & pos, Value * * args
if (args[0]->type != tLambda) if (args[0]->type != tLambda)
throw TypeError({ throw TypeError({
.hint = hintfmt("'functionArgs' requires a function"), .hint = hintfmt("'functionArgs' requires a function"),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
if (!args[0]->lambda.fun->matchAttrs) { if (!args[0]->lambda.fun->matchAttrs) {
@ -1513,7 +1515,7 @@ static void elemAt(EvalState & state, const Pos & pos, Value & list, int n, Valu
if (n < 0 || (unsigned int) n >= list.listSize()) if (n < 0 || (unsigned int) n >= list.listSize())
throw Error({ throw Error({
.hint = hintfmt("list index %1% is out of bounds", n), .hint = hintfmt("list index %1% is out of bounds", n),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
state.forceValue(*list.listElems()[n], pos); state.forceValue(*list.listElems()[n], pos);
v = *list.listElems()[n]; v = *list.listElems()[n];
@ -1543,7 +1545,7 @@ static void prim_tail(EvalState & state, const Pos & pos, Value * * args, Value
if (args[0]->listSize() == 0) if (args[0]->listSize() == 0)
throw Error({ throw Error({
.hint = hintfmt("'tail' called on an empty list"), .hint = hintfmt("'tail' called on an empty list"),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
state.mkList(v, args[0]->listSize() - 1); state.mkList(v, args[0]->listSize() - 1);
@ -1688,7 +1690,7 @@ static void prim_genList(EvalState & state, const Pos & pos, Value * * args, Val
if (len < 0) if (len < 0)
throw EvalError({ throw EvalError({
.hint = hintfmt("cannot create list of size %1%", len), .hint = hintfmt("cannot create list of size %1%", len),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
state.mkList(v, len); state.mkList(v, len);
@ -1850,7 +1852,7 @@ static void prim_div(EvalState & state, const Pos & pos, Value * * args, Value &
if (f2 == 0) if (f2 == 0)
throw EvalError({ throw EvalError({
.hint = hintfmt("division by zero"), .hint = hintfmt("division by zero"),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
if (args[0]->type == tFloat || args[1]->type == tFloat) { if (args[0]->type == tFloat || args[1]->type == tFloat) {
@ -1862,7 +1864,7 @@ static void prim_div(EvalState & state, const Pos & pos, Value * * args, Value &
if (i1 == std::numeric_limits<NixInt>::min() && i2 == -1) if (i1 == std::numeric_limits<NixInt>::min() && i2 == -1)
throw EvalError({ throw EvalError({
.hint = hintfmt("overflow in integer division"), .hint = hintfmt("overflow in integer division"),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
mkInt(v, i1 / i2); mkInt(v, i1 / i2);
@ -1923,7 +1925,7 @@ static void prim_substring(EvalState & state, const Pos & pos, Value * * args, V
if (start < 0) if (start < 0)
throw EvalError({ throw EvalError({
.hint = hintfmt("negative start position in 'substring'"), .hint = hintfmt("negative start position in 'substring'"),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
mkString(v, (unsigned int) start >= s.size() ? "" : string(s, start, len), context); mkString(v, (unsigned int) start >= s.size() ? "" : string(s, start, len), context);
@ -1946,7 +1948,7 @@ static void prim_hashString(EvalState & state, const Pos & pos, Value * * args,
if (!ht) if (!ht)
throw Error({ throw Error({
.hint = hintfmt("unknown hash type '%1%'", type), .hint = hintfmt("unknown hash type '%1%'", type),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
PathSet context; // discarded PathSet context; // discarded
@ -1992,12 +1994,12 @@ void prim_match(EvalState & state, const Pos & pos, Value * * args, Value & v)
// limit is _GLIBCXX_REGEX_STATE_LIMIT for libstdc++ // limit is _GLIBCXX_REGEX_STATE_LIMIT for libstdc++
throw EvalError({ throw EvalError({
.hint = hintfmt("memory limit exceeded by regular expression '%s'", re), .hint = hintfmt("memory limit exceeded by regular expression '%s'", re),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} else { } else {
throw EvalError({ throw EvalError({
.hint = hintfmt("invalid regular expression '%s'", re), .hint = hintfmt("invalid regular expression '%s'", re),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} }
} }
@ -2065,12 +2067,12 @@ static void prim_split(EvalState & state, const Pos & pos, Value * * args, Value
// limit is _GLIBCXX_REGEX_STATE_LIMIT for libstdc++ // limit is _GLIBCXX_REGEX_STATE_LIMIT for libstdc++
throw EvalError({ throw EvalError({
.hint = hintfmt("memory limit exceeded by regular expression '%s'", re), .hint = hintfmt("memory limit exceeded by regular expression '%s'", re),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} else { } else {
throw EvalError({ throw EvalError({
.hint = hintfmt("invalid regular expression '%s'", re), .hint = hintfmt("invalid regular expression '%s'", re),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} }
} }
@ -2104,7 +2106,7 @@ static void prim_replaceStrings(EvalState & state, const Pos & pos, Value * * ar
if (args[0]->listSize() != args[1]->listSize()) if (args[0]->listSize() != args[1]->listSize())
throw EvalError({ throw EvalError({
.hint = hintfmt("'from' and 'to' arguments to 'replaceStrings' have different lengths"), .hint = hintfmt("'from' and 'to' arguments to 'replaceStrings' have different lengths"),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
vector<string> from; vector<string> from;

View file

@ -148,7 +148,7 @@ static void prim_appendContext(EvalState & state, const Pos & pos, Value * * arg
if (!state.store->isStorePath(i.name)) if (!state.store->isStorePath(i.name))
throw EvalError({ throw EvalError({
.hint = hintfmt("Context key '%s' is not a store path", i.name), .hint = hintfmt("Context key '%s' is not a store path", i.name),
.nixCode = NixCode { .errPos = *i.pos } .errPos = *i.pos
}); });
if (!settings.readOnlyMode) if (!settings.readOnlyMode)
state.store->ensurePath(state.store->parseStorePath(i.name)); state.store->ensurePath(state.store->parseStorePath(i.name));
@ -165,7 +165,7 @@ static void prim_appendContext(EvalState & state, const Pos & pos, Value * * arg
if (!isDerivation(i.name)) { if (!isDerivation(i.name)) {
throw EvalError({ throw EvalError({
.hint = hintfmt("Tried to add all-outputs context of %s, which is not a derivation, to a string", i.name), .hint = hintfmt("Tried to add all-outputs context of %s, which is not a derivation, to a string", i.name),
.nixCode = NixCode { .errPos = *i.pos } .errPos = *i.pos
}); });
} }
context.insert("=" + string(i.name)); context.insert("=" + string(i.name));
@ -178,7 +178,7 @@ static void prim_appendContext(EvalState & state, const Pos & pos, Value * * arg
if (iter->value->listSize() && !isDerivation(i.name)) { if (iter->value->listSize() && !isDerivation(i.name)) {
throw EvalError({ throw EvalError({
.hint = hintfmt("Tried to add derivation output context of %s, which is not a derivation, to a string", i.name), .hint = hintfmt("Tried to add derivation output context of %s, which is not a derivation, to a string", i.name),
.nixCode = NixCode { .errPos = *i.pos } .errPos = *i.pos
}); });
} }
for (unsigned int n = 0; n < iter->value->listSize(); ++n) { for (unsigned int n = 0; n < iter->value->listSize(); ++n) {

View file

@ -1,91 +0,0 @@
#include "primops.hh"
#include "eval-inline.hh"
#include "store-api.hh"
#include "hash.hh"
#include "fetchers.hh"
#include "url.hh"
namespace nix {
static void prim_fetchGit(EvalState & state, const Pos & pos, Value * * args, Value & v)
{
std::string url;
std::optional<std::string> ref;
std::optional<Hash> rev;
std::string name = "source";
bool fetchSubmodules = false;
PathSet context;
state.forceValue(*args[0]);
if (args[0]->type == tAttrs) {
state.forceAttrs(*args[0], pos);
for (auto & attr : *args[0]->attrs) {
string n(attr.name);
if (n == "url")
url = state.coerceToString(*attr.pos, *attr.value, context, false, false);
else if (n == "ref")
ref = state.forceStringNoCtx(*attr.value, *attr.pos);
else if (n == "rev")
rev = Hash(state.forceStringNoCtx(*attr.value, *attr.pos), htSHA1);
else if (n == "name")
name = state.forceStringNoCtx(*attr.value, *attr.pos);
else if (n == "submodules")
fetchSubmodules = state.forceBool(*attr.value, *attr.pos);
else
throw EvalError({
.hint = hintfmt("unsupported argument '%s' to 'fetchGit'", attr.name),
.nixCode = NixCode { .errPos = *attr.pos }
});
}
if (url.empty())
throw EvalError({
.hint = hintfmt("'url' argument required"),
.nixCode = NixCode { .errPos = pos }
});
} else
url = state.coerceToString(pos, *args[0], context, false, false);
// FIXME: git externals probably can be used to bypass the URI
// whitelist. Ah well.
state.checkURI(url);
if (evalSettings.pureEval && !rev)
throw Error("in pure evaluation mode, 'fetchGit' requires a Git revision");
fetchers::Attrs attrs;
attrs.insert_or_assign("type", "git");
attrs.insert_or_assign("url", url.find("://") != std::string::npos ? url : "file://" + url);
if (ref) attrs.insert_or_assign("ref", *ref);
if (rev) attrs.insert_or_assign("rev", rev->gitRev());
if (fetchSubmodules) attrs.insert_or_assign("submodules", true);
auto input = fetchers::inputFromAttrs(attrs);
// FIXME: use name?
auto [tree, input2] = input->fetchTree(state.store);
state.mkAttrs(v, 8);
auto storePath = state.store->printStorePath(tree.storePath);
mkString(*state.allocAttr(v, state.sOutPath), storePath, PathSet({storePath}));
// Backward compatibility: set 'rev' to
// 0000000000000000000000000000000000000000 for a dirty tree.
auto rev2 = input2->getRev().value_or(Hash(htSHA1));
mkString(*state.allocAttr(v, state.symbols.create("rev")), rev2.gitRev());
mkString(*state.allocAttr(v, state.symbols.create("shortRev")), rev2.gitShortRev());
// Backward compatibility: set 'revCount' to 0 for a dirty tree.
mkInt(*state.allocAttr(v, state.symbols.create("revCount")),
tree.info.revCount.value_or(0));
mkBool(*state.allocAttr(v, state.symbols.create("submodules")), fetchSubmodules);
v.attrs->sort();
if (state.allowedPaths)
state.allowedPaths->insert(tree.actualPath);
}
static RegisterPrimOp r("fetchGit", 1, prim_fetchGit);
}

View file

@ -40,14 +40,14 @@ static void prim_fetchMercurial(EvalState & state, const Pos & pos, Value * * ar
else else
throw EvalError({ throw EvalError({
.hint = hintfmt("unsupported argument '%s' to 'fetchMercurial'", attr.name), .hint = hintfmt("unsupported argument '%s' to 'fetchMercurial'", attr.name),
.nixCode = NixCode { .errPos = *attr.pos } .errPos = *attr.pos
}); });
} }
if (url.empty()) if (url.empty())
throw EvalError({ throw EvalError({
.hint = hintfmt("'url' argument required"), .hint = hintfmt("'url' argument required"),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} else } else
@ -65,23 +65,23 @@ static void prim_fetchMercurial(EvalState & state, const Pos & pos, Value * * ar
attrs.insert_or_assign("url", url.find("://") != std::string::npos ? url : "file://" + url); attrs.insert_or_assign("url", url.find("://") != std::string::npos ? url : "file://" + url);
if (ref) attrs.insert_or_assign("ref", *ref); if (ref) attrs.insert_or_assign("ref", *ref);
if (rev) attrs.insert_or_assign("rev", rev->gitRev()); if (rev) attrs.insert_or_assign("rev", rev->gitRev());
auto input = fetchers::inputFromAttrs(attrs); auto input = fetchers::Input::fromAttrs(std::move(attrs));
// FIXME: use name // FIXME: use name
auto [tree, input2] = input->fetchTree(state.store); auto [tree, input2] = input.fetch(state.store);
state.mkAttrs(v, 8); state.mkAttrs(v, 8);
auto storePath = state.store->printStorePath(tree.storePath); auto storePath = state.store->printStorePath(tree.storePath);
mkString(*state.allocAttr(v, state.sOutPath), storePath, PathSet({storePath})); mkString(*state.allocAttr(v, state.sOutPath), storePath, PathSet({storePath}));
if (input2->getRef()) if (input2.getRef())
mkString(*state.allocAttr(v, state.symbols.create("branch")), *input2->getRef()); mkString(*state.allocAttr(v, state.symbols.create("branch")), *input2.getRef());
// Backward compatibility: set 'rev' to // Backward compatibility: set 'rev' to
// 0000000000000000000000000000000000000000 for a dirty tree. // 0000000000000000000000000000000000000000 for a dirty tree.
auto rev2 = input2->getRev().value_or(Hash(htSHA1)); auto rev2 = input2.getRev().value_or(Hash(htSHA1));
mkString(*state.allocAttr(v, state.symbols.create("rev")), rev2.gitRev()); mkString(*state.allocAttr(v, state.symbols.create("rev")), rev2.gitRev());
mkString(*state.allocAttr(v, state.symbols.create("shortRev")), std::string(rev2.gitRev(), 0, 12)); mkString(*state.allocAttr(v, state.symbols.create("shortRev")), std::string(rev2.gitRev(), 0, 12));
if (tree.info.revCount) if (auto revCount = input2.getRevCount())
mkInt(*state.allocAttr(v, state.symbols.create("revCount")), *tree.info.revCount); mkInt(*state.allocAttr(v, state.symbols.create("revCount")), *revCount);
v.attrs->sort(); v.attrs->sort();
if (state.allowedPaths) if (state.allowedPaths)

View file

@ -3,6 +3,7 @@
#include "store-api.hh" #include "store-api.hh"
#include "fetchers.hh" #include "fetchers.hh"
#include "filetransfer.hh" #include "filetransfer.hh"
#include "registry.hh"
#include <ctime> #include <ctime>
#include <iomanip> #include <iomanip>
@ -12,39 +13,73 @@ namespace nix {
void emitTreeAttrs( void emitTreeAttrs(
EvalState & state, EvalState & state,
const fetchers::Tree & tree, const fetchers::Tree & tree,
std::shared_ptr<const fetchers::Input> input, const fetchers::Input & input,
Value & v) Value & v,
bool emptyRevFallback)
{ {
assert(input.isImmutable());
state.mkAttrs(v, 8); state.mkAttrs(v, 8);
auto storePath = state.store->printStorePath(tree.storePath); auto storePath = state.store->printStorePath(tree.storePath);
mkString(*state.allocAttr(v, state.sOutPath), storePath, PathSet({storePath})); mkString(*state.allocAttr(v, state.sOutPath), storePath, PathSet({storePath}));
assert(tree.info.narHash); // FIXME: support arbitrary input attributes.
mkString(*state.allocAttr(v, state.symbols.create("narHash")),
tree.info.narHash.to_string(SRI, true));
if (input->getRev()) { auto narHash = input.getNarHash();
mkString(*state.allocAttr(v, state.symbols.create("rev")), input->getRev()->gitRev()); assert(narHash);
mkString(*state.allocAttr(v, state.symbols.create("shortRev")), input->getRev()->gitShortRev()); mkString(*state.allocAttr(v, state.symbols.create("narHash")),
narHash->to_string(SRI, true));
if (auto rev = input.getRev()) {
mkString(*state.allocAttr(v, state.symbols.create("rev")), rev->gitRev());
mkString(*state.allocAttr(v, state.symbols.create("shortRev")), rev->gitShortRev());
} else if (emptyRevFallback) {
// Backwards compat for `builtins.fetchGit`: dirty repos return an empty sha1 as rev
auto emptyHash = Hash(htSHA1);
mkString(*state.allocAttr(v, state.symbols.create("rev")), emptyHash.gitRev());
mkString(*state.allocAttr(v, state.symbols.create("shortRev")), emptyHash.gitRev());
} }
if (tree.info.revCount) if (input.getType() == "git")
mkInt(*state.allocAttr(v, state.symbols.create("revCount")), *tree.info.revCount); mkBool(*state.allocAttr(v, state.symbols.create("submodules")), maybeGetBoolAttr(input.attrs, "submodules").value_or(false));
if (tree.info.lastModified) if (auto revCount = input.getRevCount())
mkString(*state.allocAttr(v, state.symbols.create("lastModified")), mkInt(*state.allocAttr(v, state.symbols.create("revCount")), *revCount);
fmt("%s", std::put_time(std::gmtime(&*tree.info.lastModified), "%Y%m%d%H%M%S"))); else if (emptyRevFallback)
mkInt(*state.allocAttr(v, state.symbols.create("revCount")), 0);
if (auto lastModified = input.getLastModified()) {
mkInt(*state.allocAttr(v, state.symbols.create("lastModified")), *lastModified);
mkString(*state.allocAttr(v, state.symbols.create("lastModifiedDate")),
fmt("%s", std::put_time(std::gmtime(&*lastModified), "%Y%m%d%H%M%S")));
}
v.attrs->sort(); v.attrs->sort();
} }
static void prim_fetchTree(EvalState & state, const Pos & pos, Value * * args, Value & v) std::string fixURI(std::string uri, EvalState &state)
{ {
settings.requireExperimentalFeature("flakes"); state.checkURI(uri);
return uri.find("://") != std::string::npos ? uri : "file://" + uri;
}
std::shared_ptr<const fetchers::Input> input; void addURI(EvalState &state, fetchers::Attrs &attrs, Symbol name, std::string v)
{
string n(name);
attrs.emplace(name, n == "url" ? fixURI(v, state) : v);
}
static void fetchTree(
EvalState &state,
const Pos &pos,
Value **args,
Value &v,
const std::optional<std::string> type,
bool emptyRevFallback = false
) {
fetchers::Input input;
PathSet context; PathSet context;
state.forceValue(*args[0]); state.forceValue(*args[0]);
@ -56,35 +91,65 @@ static void prim_fetchTree(EvalState & state, const Pos & pos, Value * * args, V
for (auto & attr : *args[0]->attrs) { for (auto & attr : *args[0]->attrs) {
state.forceValue(*attr.value); state.forceValue(*attr.value);
if (attr.value->type == tString) if (attr.value->type == tPath || attr.value->type == tString)
attrs.emplace(attr.name, attr.value->string.s); addURI(
state,
attrs,
attr.name,
state.coerceToString(*attr.pos, *attr.value, context, false, false)
);
else if (attr.value->type == tString)
addURI(state, attrs, attr.name, attr.value->string.s);
else if (attr.value->type == tBool) else if (attr.value->type == tBool)
attrs.emplace(attr.name, attr.value->boolean); attrs.emplace(attr.name, fetchers::Explicit<bool>{attr.value->boolean});
else if (attr.value->type == tInt)
attrs.emplace(attr.name, attr.value->integer);
else else
throw TypeError("fetchTree argument '%s' is %s while a string or Boolean is expected", throw TypeError("fetchTree argument '%s' is %s while a string, Boolean or integer is expected",
attr.name, showType(*attr.value)); attr.name, showType(*attr.value));
} }
if (type)
attrs.emplace("type", type.value());
if (!attrs.count("type")) if (!attrs.count("type"))
throw Error({ throw Error({
.hint = hintfmt("attribute 'type' is missing in call to 'fetchTree'"), .hint = hintfmt("attribute 'type' is missing in call to 'fetchTree'"),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
input = fetchers::inputFromAttrs(attrs); input = fetchers::Input::fromAttrs(std::move(attrs));
} else } else {
input = fetchers::inputFromURL(state.coerceToString(pos, *args[0], context, false, false)); auto url = fixURI(state.coerceToString(pos, *args[0], context, false, false), state);
if (evalSettings.pureEval && !input->isImmutable()) if (type == "git") {
throw Error("in pure evaluation mode, 'fetchTree' requires an immutable input"); fetchers::Attrs attrs;
attrs.emplace("type", "git");
attrs.emplace("url", url);
input = fetchers::Input::fromAttrs(std::move(attrs));
} else {
input = fetchers::Input::fromURL(url);
}
}
// FIXME: use fetchOrSubstituteTree if (!evalSettings.pureEval && !input.isDirect())
auto [tree, input2] = input->fetchTree(state.store); input = lookupInRegistries(state.store, input).first;
if (evalSettings.pureEval && !input.isImmutable())
throw Error("in pure evaluation mode, 'fetchTree' requires an immutable input, at %s", pos);
auto [tree, input2] = input.fetch(state.store);
if (state.allowedPaths) if (state.allowedPaths)
state.allowedPaths->insert(tree.actualPath); state.allowedPaths->insert(tree.actualPath);
emitTreeAttrs(state, tree, input2, v); emitTreeAttrs(state, tree, input2, v, emptyRevFallback);
}
static void prim_fetchTree(EvalState & state, const Pos & pos, Value * * args, Value & v)
{
settings.requireExperimentalFeature("flakes");
fetchTree(state, pos, args, v, std::nullopt);
} }
static RegisterPrimOp r("fetchTree", 1, prim_fetchTree); static RegisterPrimOp r("fetchTree", 1, prim_fetchTree);
@ -112,14 +177,14 @@ static void fetch(EvalState & state, const Pos & pos, Value * * args, Value & v,
else else
throw EvalError({ throw EvalError({
.hint = hintfmt("unsupported argument '%s' to '%s'", attr.name, who), .hint = hintfmt("unsupported argument '%s' to '%s'", attr.name, who),
.nixCode = NixCode { .errPos = *attr.pos } .errPos = *attr.pos
}); });
} }
if (!url) if (!url)
throw EvalError({ throw EvalError({
.hint = hintfmt("'url' argument required"), .hint = hintfmt("'url' argument required"),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} else } else
url = state.forceStringNoCtx(*args[0], pos); url = state.forceStringNoCtx(*args[0], pos);
@ -136,7 +201,7 @@ static void fetch(EvalState & state, const Pos & pos, Value * * args, Value & v,
auto storePath = auto storePath =
unpack unpack
? fetchers::downloadTarball(state.store, *url, name, (bool) expectedHash).storePath ? fetchers::downloadTarball(state.store, *url, name, (bool) expectedHash).first.storePath
: fetchers::downloadFile(state.store, *url, name, (bool) expectedHash).storePath; : fetchers::downloadFile(state.store, *url, name, (bool) expectedHash).storePath;
auto path = state.store->toRealPath(storePath); auto path = state.store->toRealPath(storePath);
@ -147,7 +212,7 @@ static void fetch(EvalState & state, const Pos & pos, Value * * args, Value & v,
: hashFile(htSHA256, path); : hashFile(htSHA256, path);
if (hash != *expectedHash) if (hash != *expectedHash)
throw Error((unsigned int) 102, "hash mismatch in file downloaded from '%s':\n wanted: %s\n got: %s", throw Error((unsigned int) 102, "hash mismatch in file downloaded from '%s':\n wanted: %s\n got: %s",
*url, expectedHash->to_string(Base32, true), hash.to_string(Base32, true)); *url, expectedHash->to_string(Base32, true), hash->to_string(Base32, true));
} }
if (state.allowedPaths) if (state.allowedPaths)
@ -166,7 +231,13 @@ static void prim_fetchTarball(EvalState & state, const Pos & pos, Value * * args
fetch(state, pos, args, v, "fetchTarball", true, "source"); fetch(state, pos, args, v, "fetchTarball", true, "source");
} }
static void prim_fetchGit(EvalState &state, const Pos &pos, Value **args, Value &v)
{
fetchTree(state, pos, args, v, "git", true);
}
static RegisterPrimOp r2("__fetchurl", 1, prim_fetchurl); static RegisterPrimOp r2("__fetchurl", 1, prim_fetchurl);
static RegisterPrimOp r3("fetchTarball", 1, prim_fetchTarball); static RegisterPrimOp r3("fetchTarball", 1, prim_fetchTarball);
static RegisterPrimOp r4("fetchGit", 1, prim_fetchGit);
} }

View file

@ -83,7 +83,7 @@ static void prim_fromTOML(EvalState & state, const Pos & pos, Value * * args, Va
} catch (std::runtime_error & e) { } catch (std::runtime_error & e) {
throw EvalError({ throw EvalError({
.hint = hintfmt("while parsing a TOML string: %s", e.what()), .hint = hintfmt("while parsing a TOML string: %s", e.what()),
.nixCode = NixCode { .errPos = pos } .errPos = pos
}); });
} }
} }

View file

@ -28,6 +28,12 @@ public:
return s == s2.s; return s == s2.s;
} }
// FIXME: remove
bool operator == (std::string_view s2) const
{
return s->compare(s2) == 0;
}
bool operator != (const Symbol & s2) const bool operator != (const Symbol & s2) const
{ {
return s != s2.s; return s != s2.s;
@ -68,9 +74,10 @@ private:
Symbols symbols; Symbols symbols;
public: public:
Symbol create(const string & s) Symbol create(std::string_view s)
{ {
std::pair<Symbols::iterator, bool> res = symbols.insert(s); // FIXME: avoid allocation if 's' already exists in the symbol table.
std::pair<Symbols::iterator, bool> res = symbols.emplace(std::string(s));
return Symbol(&*res.first); return Symbol(&*res.first);
} }

View file

@ -166,6 +166,13 @@ struct Value
{ {
return type == tList1 ? 1 : type == tList2 ? 2 : bigList.size; return type == tList1 ? 1 : type == tList2 ? 2 : bigList.size;
} }
/* Check whether forcing this value requires a trivial amount of
computation. In particular, function applications are
non-trivial. */
bool isTrivial() const;
std::vector<std::pair<Path, std::string>> getContext();
}; };

View file

@ -27,7 +27,7 @@ nlohmann::json attrsToJson(const Attrs & attrs)
{ {
nlohmann::json json; nlohmann::json json;
for (auto & attr : attrs) { for (auto & attr : attrs) {
if (auto v = std::get_if<int64_t>(&attr.second)) { if (auto v = std::get_if<uint64_t>(&attr.second)) {
json[attr.first] = *v; json[attr.first] = *v;
} else if (auto v = std::get_if<std::string>(&attr.second)) { } else if (auto v = std::get_if<std::string>(&attr.second)) {
json[attr.first] = *v; json[attr.first] = *v;
@ -55,16 +55,16 @@ std::string getStrAttr(const Attrs & attrs, const std::string & name)
return *s; return *s;
} }
std::optional<int64_t> maybeGetIntAttr(const Attrs & attrs, const std::string & name) std::optional<uint64_t> maybeGetIntAttr(const Attrs & attrs, const std::string & name)
{ {
auto i = attrs.find(name); auto i = attrs.find(name);
if (i == attrs.end()) return {}; if (i == attrs.end()) return {};
if (auto v = std::get_if<int64_t>(&i->second)) if (auto v = std::get_if<uint64_t>(&i->second))
return *v; return *v;
throw Error("input attribute '%s' is not an integer", name); throw Error("input attribute '%s' is not an integer", name);
} }
int64_t getIntAttr(const Attrs & attrs, const std::string & name) uint64_t getIntAttr(const Attrs & attrs, const std::string & name)
{ {
auto s = maybeGetIntAttr(attrs, name); auto s = maybeGetIntAttr(attrs, name);
if (!s) if (!s)
@ -76,8 +76,8 @@ std::optional<bool> maybeGetBoolAttr(const Attrs & attrs, const std::string & na
{ {
auto i = attrs.find(name); auto i = attrs.find(name);
if (i == attrs.end()) return {}; if (i == attrs.end()) return {};
if (auto v = std::get_if<int64_t>(&i->second)) if (auto v = std::get_if<Explicit<bool>>(&i->second))
return *v; return v->t;
throw Error("input attribute '%s' is not a Boolean", name); throw Error("input attribute '%s' is not a Boolean", name);
} }
@ -93,7 +93,7 @@ std::map<std::string, std::string> attrsToQuery(const Attrs & attrs)
{ {
std::map<std::string, std::string> query; std::map<std::string, std::string> query;
for (auto & attr : attrs) { for (auto & attr : attrs) {
if (auto v = std::get_if<int64_t>(&attr.second)) { if (auto v = std::get_if<uint64_t>(&attr.second)) {
query.insert_or_assign(attr.first, fmt("%d", *v)); query.insert_or_assign(attr.first, fmt("%d", *v));
} else if (auto v = std::get_if<std::string>(&attr.second)) { } else if (auto v = std::get_if<std::string>(&attr.second)) {
query.insert_or_assign(attr.first, *v); query.insert_or_assign(attr.first, *v);

View file

@ -13,9 +13,14 @@ namespace nix::fetchers {
template<typename T> template<typename T>
struct Explicit { struct Explicit {
T t; T t;
bool operator ==(const Explicit<T> & other) const
{
return t == other.t;
}
}; };
typedef std::variant<std::string, int64_t, Explicit<bool>> Attr; typedef std::variant<std::string, uint64_t, Explicit<bool>> Attr;
typedef std::map<std::string, Attr> Attrs; typedef std::map<std::string, Attr> Attrs;
Attrs jsonToAttrs(const nlohmann::json & json); Attrs jsonToAttrs(const nlohmann::json & json);
@ -26,9 +31,9 @@ std::optional<std::string> maybeGetStrAttr(const Attrs & attrs, const std::strin
std::string getStrAttr(const Attrs & attrs, const std::string & name); std::string getStrAttr(const Attrs & attrs, const std::string & name);
std::optional<int64_t> maybeGetIntAttr(const Attrs & attrs, const std::string & name); std::optional<uint64_t> maybeGetIntAttr(const Attrs & attrs, const std::string & name);
int64_t getIntAttr(const Attrs & attrs, const std::string & name); uint64_t getIntAttr(const Attrs & attrs, const std::string & name);
std::optional<bool> maybeGetBoolAttr(const Attrs & attrs, const std::string & name); std::optional<bool> maybeGetBoolAttr(const Attrs & attrs, const std::string & name);

View file

@ -6,6 +6,8 @@ namespace nix::fetchers {
struct Cache struct Cache
{ {
virtual ~Cache() { }
virtual void add( virtual void add(
ref<Store> store, ref<Store> store,
const Attrs & inAttrs, const Attrs & inAttrs,

View file

@ -5,71 +5,265 @@
namespace nix::fetchers { namespace nix::fetchers {
std::unique_ptr<std::vector<std::unique_ptr<InputScheme>>> inputSchemes = nullptr; std::unique_ptr<std::vector<std::shared_ptr<InputScheme>>> inputSchemes = nullptr;
void registerInputScheme(std::unique_ptr<InputScheme> && inputScheme) void registerInputScheme(std::shared_ptr<InputScheme> && inputScheme)
{ {
if (!inputSchemes) inputSchemes = std::make_unique<std::vector<std::unique_ptr<InputScheme>>>(); if (!inputSchemes) inputSchemes = std::make_unique<std::vector<std::shared_ptr<InputScheme>>>();
inputSchemes->push_back(std::move(inputScheme)); inputSchemes->push_back(std::move(inputScheme));
} }
std::unique_ptr<Input> inputFromURL(const ParsedURL & url) Input Input::fromURL(const std::string & url)
{
return fromURL(parseURL(url));
}
static void fixupInput(Input & input)
{
// Check common attributes.
input.getType();
input.getRef();
if (input.getRev())
input.immutable = true;
input.getRevCount();
input.getLastModified();
if (input.getNarHash())
input.immutable = true;
}
Input Input::fromURL(const ParsedURL & url)
{ {
for (auto & inputScheme : *inputSchemes) { for (auto & inputScheme : *inputSchemes) {
auto res = inputScheme->inputFromURL(url); auto res = inputScheme->inputFromURL(url);
if (res) return res; if (res) {
res->scheme = inputScheme;
fixupInput(*res);
return std::move(*res);
} }
}
throw Error("input '%s' is unsupported", url.url); throw Error("input '%s' is unsupported", url.url);
} }
std::unique_ptr<Input> inputFromURL(const std::string & url) Input Input::fromAttrs(Attrs && attrs)
{ {
return inputFromURL(parseURL(url)); for (auto & inputScheme : *inputSchemes) {
auto res = inputScheme->inputFromAttrs(attrs);
if (res) {
res->scheme = inputScheme;
fixupInput(*res);
return std::move(*res);
}
}
Input input;
input.attrs = attrs;
fixupInput(input);
return input;
} }
std::unique_ptr<Input> inputFromAttrs(const Attrs & attrs) ParsedURL Input::toURL() const
{ {
auto attrs2(attrs); if (!scheme)
attrs2.erase("narHash"); throw Error("cannot show unsupported input '%s'", attrsToJson(attrs));
for (auto & inputScheme : *inputSchemes) { return scheme->toURL(*this);
auto res = inputScheme->inputFromAttrs(attrs2); }
if (res) {
if (auto narHash = maybeGetStrAttr(attrs, "narHash")) std::string Input::to_string() const
// FIXME: require SRI hash. {
res->narHash = newHashAllowEmpty(*narHash, {}); return toURL().to_string();
return res;
}
}
throw Error("input '%s' is unsupported", attrsToJson(attrs));
} }
Attrs Input::toAttrs() const Attrs Input::toAttrs() const
{ {
auto attrs = toAttrsInternal();
if (narHash)
attrs.emplace("narHash", narHash->to_string(SRI, true));
attrs.emplace("type", type());
return attrs; return attrs;
} }
std::pair<Tree, std::shared_ptr<const Input>> Input::fetchTree(ref<Store> store) const bool Input::hasAllInfo() const
{ {
auto [tree, input] = fetchTreeInternal(store); return getNarHash() && scheme && scheme->hasAllInfo(*this);
}
bool Input::operator ==(const Input & other) const
{
return attrs == other.attrs;
}
bool Input::contains(const Input & other) const
{
if (*this == other) return true;
auto other2(other);
other2.attrs.erase("ref");
other2.attrs.erase("rev");
if (*this == other2) return true;
return false;
}
std::pair<Tree, Input> Input::fetch(ref<Store> store) const
{
if (!scheme)
throw Error("cannot fetch unsupported input '%s'", attrsToJson(toAttrs()));
/* The tree may already be in the Nix store, or it could be
substituted (which is often faster than fetching from the
original source). So check that. */
if (hasAllInfo()) {
try {
auto storePath = computeStorePath(*store);
store->ensurePath(storePath);
debug("using substituted/cached input '%s' in '%s'",
to_string(), store->printStorePath(storePath));
auto actualPath = store->toRealPath(storePath);
return {fetchers::Tree(std::move(actualPath), std::move(storePath)), *this};
} catch (Error & e) {
debug("substitution of input '%s' failed: %s", to_string(), e.what());
}
}
auto [tree, input] = scheme->fetch(store, *this);
if (tree.actualPath == "") if (tree.actualPath == "")
tree.actualPath = store->toRealPath(tree.storePath); tree.actualPath = store->toRealPath(tree.storePath);
if (!tree.info.narHash) auto narHash = store->queryPathInfo(tree.storePath)->narHash;
tree.info.narHash = store->queryPathInfo(tree.storePath)->narHash; input.attrs.insert_or_assign("narHash", narHash->to_string(SRI, true));
if (input->narHash) if (auto prevNarHash = getNarHash()) {
assert(input->narHash == tree.info.narHash); if (narHash != *prevNarHash)
throw Error((unsigned int) 102, "NAR hash mismatch in input '%s' (%s), expected '%s', got '%s'",
to_string(), tree.actualPath, prevNarHash->to_string(SRI, true), narHash->to_string(SRI, true));
}
if (narHash && narHash != input->narHash) if (auto prevLastModified = getLastModified()) {
throw Error("NAR hash mismatch in input '%s' (%s), expected '%s', got '%s'", if (input.getLastModified() != prevLastModified)
to_string(), tree.actualPath, narHash->to_string(SRI, true), input->narHash->to_string(SRI, true)); throw Error("'lastModified' attribute mismatch in input '%s', expected %d",
input.to_string(), *prevLastModified);
}
if (auto prevRevCount = getRevCount()) {
if (input.getRevCount() != prevRevCount)
throw Error("'revCount' attribute mismatch in input '%s', expected %d",
input.to_string(), *prevRevCount);
}
input.immutable = true;
assert(input.hasAllInfo());
return {std::move(tree), input}; return {std::move(tree), input};
} }
Input Input::applyOverrides(
std::optional<std::string> ref,
std::optional<Hash> rev) const
{
if (!scheme) return *this;
return scheme->applyOverrides(*this, ref, rev);
}
void Input::clone(const Path & destDir) const
{
assert(scheme);
scheme->clone(*this, destDir);
}
std::optional<Path> Input::getSourcePath() const
{
assert(scheme);
return scheme->getSourcePath(*this);
}
void Input::markChangedFile(
std::string_view file,
std::optional<std::string> commitMsg) const
{
assert(scheme);
return scheme->markChangedFile(*this, file, commitMsg);
}
StorePath Input::computeStorePath(Store & store) const
{
auto narHash = getNarHash();
if (!narHash)
throw Error("cannot compute store path for mutable input '%s'", to_string());
return store.makeFixedOutputPath(FileIngestionMethod::Recursive, *narHash, "source");
}
std::string Input::getType() const
{
return getStrAttr(attrs, "type");
}
std::optional<Hash> Input::getNarHash() const
{
if (auto s = maybeGetStrAttr(attrs, "narHash"))
// FIXME: require SRI hash.
return newHashAllowEmpty(*s, htSHA256);
return {};
}
std::optional<std::string> Input::getRef() const
{
if (auto s = maybeGetStrAttr(attrs, "ref"))
return *s;
return {};
}
std::optional<Hash> Input::getRev() const
{
if (auto s = maybeGetStrAttr(attrs, "rev"))
return Hash(*s, htSHA1);
return {};
}
std::optional<uint64_t> Input::getRevCount() const
{
if (auto n = maybeGetIntAttr(attrs, "revCount"))
return *n;
return {};
}
std::optional<time_t> Input::getLastModified() const
{
if (auto n = maybeGetIntAttr(attrs, "lastModified"))
return *n;
return {};
}
ParsedURL InputScheme::toURL(const Input & input)
{
throw Error("don't know how to convert input '%s' to a URL", attrsToJson(input.attrs));
}
Input InputScheme::applyOverrides(
const Input & input,
std::optional<std::string> ref,
std::optional<Hash> rev)
{
if (ref)
throw Error("don't know how to set branch/tag name of input '%s' to '%s'", input.to_string(), *ref);
if (rev)
throw Error("don't know how to set revision of input '%s' to '%s'", input.to_string(), rev->gitRev());
return input;
}
std::optional<Path> InputScheme::getSourcePath(const Input & input)
{
return {};
}
void InputScheme::markChangedFile(const Input & input, std::string_view file, std::optional<std::string> commitMsg)
{
assert(false);
}
void InputScheme::clone(const Input & input, const Path & destDir)
{
throw Error("do not know how to clone input '%s'", input.to_string());
}
} }

View file

@ -3,7 +3,6 @@
#include "types.hh" #include "types.hh"
#include "hash.hh" #include "hash.hh"
#include "path.hh" #include "path.hh"
#include "tree-info.hh"
#include "attrs.hh" #include "attrs.hh"
#include "url.hh" #include "url.hh"
@ -13,73 +12,101 @@ namespace nix { class Store; }
namespace nix::fetchers { namespace nix::fetchers {
struct Input;
struct Tree struct Tree
{ {
Path actualPath; Path actualPath;
StorePath storePath; StorePath storePath;
TreeInfo info; Tree(Path && actualPath, StorePath && storePath) : actualPath(actualPath), storePath(std::move(storePath)) {}
}; };
struct Input : std::enable_shared_from_this<Input> struct InputScheme;
struct Input
{ {
std::optional<Hash> narHash; // FIXME: implement friend class InputScheme;
virtual std::string type() const = 0; std::shared_ptr<InputScheme> scheme; // note: can be null
Attrs attrs;
bool immutable = false;
bool direct = true;
virtual ~Input() { } public:
static Input fromURL(const std::string & url);
virtual bool operator ==(const Input & other) const { return false; } static Input fromURL(const ParsedURL & url);
/* Check whether this is a "direct" input, that is, not static Input fromAttrs(Attrs && attrs);
one that goes through a registry. */
virtual bool isDirect() const { return true; }
/* Check whether this is an "immutable" input, that is, ParsedURL toURL() const;
one that contains a commit hash or content hash. */
virtual bool isImmutable() const { return (bool) narHash; }
virtual bool contains(const Input & other) const { return false; } std::string to_string() const;
virtual std::optional<std::string> getRef() const { return {}; }
virtual std::optional<Hash> getRev() const { return {}; }
virtual ParsedURL toURL() const = 0;
std::string to_string() const
{
return toURL().to_string();
}
Attrs toAttrs() const; Attrs toAttrs() const;
std::pair<Tree, std::shared_ptr<const Input>> fetchTree(ref<Store> store) const; /* Check whether this is a "direct" input, that is, not
one that goes through a registry. */
bool isDirect() const { return direct; }
private: /* Check whether this is an "immutable" input, that is,
one that contains a commit hash or content hash. */
bool isImmutable() const { return immutable; }
virtual std::pair<Tree, std::shared_ptr<const Input>> fetchTreeInternal(ref<Store> store) const = 0; bool hasAllInfo() const;
virtual Attrs toAttrsInternal() const = 0; bool operator ==(const Input & other) const;
bool contains(const Input & other) const;
std::pair<Tree, Input> fetch(ref<Store> store) const;
Input applyOverrides(
std::optional<std::string> ref,
std::optional<Hash> rev) const;
void clone(const Path & destDir) const;
std::optional<Path> getSourcePath() const;
void markChangedFile(
std::string_view file,
std::optional<std::string> commitMsg) const;
StorePath computeStorePath(Store & store) const;
// Convience functions for common attributes.
std::string getType() const;
std::optional<Hash> getNarHash() const;
std::optional<std::string> getRef() const;
std::optional<Hash> getRev() const;
std::optional<uint64_t> getRevCount() const;
std::optional<time_t> getLastModified() const;
}; };
struct InputScheme struct InputScheme
{ {
virtual ~InputScheme() { } virtual std::optional<Input> inputFromURL(const ParsedURL & url) = 0;
virtual std::unique_ptr<Input> inputFromURL(const ParsedURL & url) = 0; virtual std::optional<Input> inputFromAttrs(const Attrs & attrs) = 0;
virtual std::unique_ptr<Input> inputFromAttrs(const Attrs & attrs) = 0; virtual ParsedURL toURL(const Input & input);
virtual bool hasAllInfo(const Input & input) = 0;
virtual Input applyOverrides(
const Input & input,
std::optional<std::string> ref,
std::optional<Hash> rev);
virtual void clone(const Input & input, const Path & destDir);
virtual std::optional<Path> getSourcePath(const Input & input);
virtual void markChangedFile(const Input & input, std::string_view file, std::optional<std::string> commitMsg);
virtual std::pair<Tree, Input> fetch(ref<Store> store, const Input & input) = 0;
}; };
std::unique_ptr<Input> inputFromURL(const ParsedURL & url); void registerInputScheme(std::shared_ptr<InputScheme> && fetcher);
std::unique_ptr<Input> inputFromURL(const std::string & url);
std::unique_ptr<Input> inputFromAttrs(const Attrs & attrs);
void registerInputScheme(std::unique_ptr<InputScheme> && fetcher);
struct DownloadFileResult struct DownloadFileResult
{ {
@ -94,7 +121,7 @@ DownloadFileResult downloadFile(
const std::string & name, const std::string & name,
bool immutable); bool immutable);
Tree downloadTarball( std::pair<Tree, time_t> downloadTarball(
ref<Store> store, ref<Store> store,
const std::string & url, const std::string & url,
const std::string & name, const std::string & name,

View file

@ -22,80 +22,152 @@ static bool isNotDotGitDirectory(const Path & path)
return not std::regex_match(path, gitDirRegex); return not std::regex_match(path, gitDirRegex);
} }
struct GitInput : Input struct GitInputScheme : InputScheme
{ {
ParsedURL url; std::optional<Input> inputFromURL(const ParsedURL & url) override
std::optional<std::string> ref;
std::optional<Hash> rev;
bool shallow = false;
bool submodules = false;
GitInput(const ParsedURL & url) : url(url)
{ }
std::string type() const override { return "git"; }
bool operator ==(const Input & other) const override
{ {
auto other2 = dynamic_cast<const GitInput *>(&other); if (url.scheme != "git" &&
return url.scheme != "git+http" &&
other2 url.scheme != "git+https" &&
&& url == other2->url url.scheme != "git+ssh" &&
&& rev == other2->rev url.scheme != "git+file") return {};
&& ref == other2->ref;
}
bool isImmutable() const override auto url2(url);
{ if (hasPrefix(url2.scheme, "git+")) url2.scheme = std::string(url2.scheme, 4);
return (bool) rev || narHash; url2.query.clear();
}
std::optional<std::string> getRef() const override { return ref; }
std::optional<Hash> getRev() const override { return rev; }
ParsedURL toURL() const override
{
ParsedURL url2(url);
if (url2.scheme != "git") url2.scheme = "git+" + url2.scheme;
if (rev) url2.query.insert_or_assign("rev", rev->gitRev());
if (ref) url2.query.insert_or_assign("ref", *ref);
if (shallow) url2.query.insert_or_assign("shallow", "1");
return url2;
}
Attrs toAttrsInternal() const override
{
Attrs attrs; Attrs attrs;
attrs.emplace("url", url.to_string()); attrs.emplace("type", "git");
if (ref)
attrs.emplace("ref", *ref); for (auto &[name, value] : url.query) {
if (rev) if (name == "rev" || name == "ref")
attrs.emplace("rev", rev->gitRev()); attrs.emplace(name, value);
if (shallow) else if (name == "shallow")
attrs.emplace("shallow", true); attrs.emplace(name, Explicit<bool> { value == "1" });
if (submodules) else
attrs.emplace("submodules", true); url2.query.emplace(name, value);
return attrs;
} }
std::pair<bool, std::string> getActualUrl() const attrs.emplace("url", url2.to_string());
return inputFromAttrs(attrs);
}
std::optional<Input> inputFromAttrs(const Attrs & attrs) override
{
if (maybeGetStrAttr(attrs, "type") != "git") return {};
for (auto & [name, value] : attrs)
if (name != "type" && name != "url" && name != "ref" && name != "rev" && name != "shallow" && name != "submodules" && name != "lastModified" && name != "revCount" && name != "narHash")
throw Error("unsupported Git input attribute '%s'", name);
parseURL(getStrAttr(attrs, "url"));
maybeGetBoolAttr(attrs, "shallow");
maybeGetBoolAttr(attrs, "submodules");
if (auto ref = maybeGetStrAttr(attrs, "ref")) {
if (std::regex_search(*ref, badGitRefRegex))
throw BadURL("invalid Git branch/tag name '%s'", *ref);
}
Input input;
input.attrs = attrs;
return input;
}
ParsedURL toURL(const Input & input) override
{
auto url = parseURL(getStrAttr(input.attrs, "url"));
if (url.scheme != "git") url.scheme = "git+" + url.scheme;
if (auto rev = input.getRev()) url.query.insert_or_assign("rev", rev->gitRev());
if (auto ref = input.getRef()) url.query.insert_or_assign("ref", *ref);
if (maybeGetBoolAttr(input.attrs, "shallow").value_or(false))
url.query.insert_or_assign("shallow", "1");
return url;
}
bool hasAllInfo(const Input & input) override
{
bool maybeDirty = !input.getRef();
bool shallow = maybeGetBoolAttr(input.attrs, "shallow").value_or(false);
return
maybeGetIntAttr(input.attrs, "lastModified")
&& (shallow || maybeDirty || maybeGetIntAttr(input.attrs, "revCount"));
}
Input applyOverrides(
const Input & input,
std::optional<std::string> ref,
std::optional<Hash> rev) override
{
auto res(input);
if (rev) res.attrs.insert_or_assign("rev", rev->gitRev());
if (ref) res.attrs.insert_or_assign("ref", *ref);
if (!res.getRef() && res.getRev())
throw Error("Git input '%s' has a commit hash but no branch/tag name", res.to_string());
return res;
}
void clone(const Input & input, const Path & destDir) override
{
auto [isLocal, actualUrl] = getActualUrl(input);
Strings args = {"clone"};
args.push_back(actualUrl);
if (auto ref = input.getRef()) {
args.push_back("--branch");
args.push_back(*ref);
}
if (input.getRev()) throw Error("cloning a specific revision is not implemented");
args.push_back(destDir);
runProgram("git", true, args);
}
std::optional<Path> getSourcePath(const Input & input) override
{
auto url = parseURL(getStrAttr(input.attrs, "url"));
if (url.scheme == "file" && !input.getRef() && !input.getRev())
return url.path;
return {};
}
void markChangedFile(const Input & input, std::string_view file, std::optional<std::string> commitMsg) override
{
auto sourcePath = getSourcePath(input);
assert(sourcePath);
runProgram("git", true,
{ "-C", *sourcePath, "add", "--force", "--intent-to-add", "--", std::string(file) });
if (commitMsg)
runProgram("git", true,
{ "-C", *sourcePath, "commit", std::string(file), "-m", *commitMsg });
}
std::pair<bool, std::string> getActualUrl(const Input & input) const
{ {
// Don't clone file:// URIs (but otherwise treat them the // Don't clone file:// URIs (but otherwise treat them the
// same as remote URIs, i.e. don't use the working tree or // same as remote URIs, i.e. don't use the working tree or
// HEAD). // HEAD).
static bool forceHttp = getEnv("_NIX_FORCE_HTTP") == "1"; // for testing static bool forceHttp = getEnv("_NIX_FORCE_HTTP") == "1"; // for testing
auto url = parseURL(getStrAttr(input.attrs, "url"));
bool isLocal = url.scheme == "file" && !forceHttp; bool isLocal = url.scheme == "file" && !forceHttp;
return {isLocal, isLocal ? url.path : url.base}; return {isLocal, isLocal ? url.path : url.base};
} }
std::pair<Tree, std::shared_ptr<const Input>> fetchTreeInternal(nix::ref<Store> store) const override std::pair<Tree, Input> fetch(ref<Store> store, const Input & _input) override
{ {
auto name = "source"; auto name = "source";
auto input = std::make_shared<GitInput>(*this); Input input(_input);
assert(!rev || rev->type == htSHA1); bool shallow = maybeGetBoolAttr(input.attrs, "shallow").value_or(false);
bool submodules = maybeGetBoolAttr(input.attrs, "submodules").value_or(false);
std::string cacheType = "git"; std::string cacheType = "git";
if (shallow) cacheType += "-shallow"; if (shallow) cacheType += "-shallow";
@ -106,39 +178,35 @@ struct GitInput : Input
return Attrs({ return Attrs({
{"type", cacheType}, {"type", cacheType},
{"name", name}, {"name", name},
{"rev", input->rev->gitRev()}, {"rev", input.getRev()->gitRev()},
}); });
}; };
auto makeResult = [&](const Attrs & infoAttrs, StorePath && storePath) auto makeResult = [&](const Attrs & infoAttrs, StorePath && storePath)
-> std::pair<Tree, std::shared_ptr<const Input>> -> std::pair<Tree, Input>
{ {
assert(input->rev); assert(input.getRev());
assert(!rev || rev == input->rev); assert(!_input.getRev() || _input.getRev() == input.getRev());
if (!shallow)
input.attrs.insert_or_assign("revCount", getIntAttr(infoAttrs, "revCount"));
input.attrs.insert_or_assign("lastModified", getIntAttr(infoAttrs, "lastModified"));
return { return {
Tree { Tree(store->toRealPath(storePath), std::move(storePath)),
.actualPath = store->toRealPath(storePath),
.storePath = std::move(storePath),
.info = TreeInfo {
.revCount = shallow ? std::nullopt : std::optional(getIntAttr(infoAttrs, "revCount")),
.lastModified = getIntAttr(infoAttrs, "lastModified"),
},
},
input input
}; };
}; };
if (rev) { if (input.getRev()) {
if (auto res = getCache()->lookup(store, getImmutableAttrs())) if (auto res = getCache()->lookup(store, getImmutableAttrs()))
return makeResult(res->first, std::move(res->second)); return makeResult(res->first, std::move(res->second));
} }
auto [isLocal, actualUrl_] = getActualUrl(); auto [isLocal, actualUrl_] = getActualUrl(input);
auto actualUrl = actualUrl_; // work around clang bug auto actualUrl = actualUrl_; // work around clang bug
// If this is a local directory and no ref or revision is // If this is a local directory and no ref or revision is
// given, then allow the use of an unclean working tree. // given, then allow the use of an unclean working tree.
if (!input->ref && !input->rev && isLocal) { if (!input.getRef() && !input.getRev() && isLocal) {
bool clean = false; bool clean = false;
/* Check whether this repo has any commits. There are /* Check whether this repo has any commits. There are
@ -197,35 +265,35 @@ struct GitInput : Input
auto storePath = store->addToStore("source", actualUrl, FileIngestionMethod::Recursive, htSHA256, filter); auto storePath = store->addToStore("source", actualUrl, FileIngestionMethod::Recursive, htSHA256, filter);
auto tree = Tree {
.actualPath = store->printStorePath(storePath),
.storePath = std::move(storePath),
.info = TreeInfo {
// FIXME: maybe we should use the timestamp of the last // FIXME: maybe we should use the timestamp of the last
// modified dirty file? // modified dirty file?
.lastModified = haveCommits ? std::stoull(runProgram("git", true, { "-C", actualUrl, "log", "-1", "--format=%ct", "HEAD" })) : 0, input.attrs.insert_or_assign(
} "lastModified",
haveCommits ? std::stoull(runProgram("git", true, { "-C", actualUrl, "log", "-1", "--format=%ct", "HEAD" })) : 0);
return {
Tree(store->printStorePath(storePath), std::move(storePath)),
input
}; };
return {std::move(tree), input};
} }
} }
if (!input->ref) input->ref = isLocal ? readHead(actualUrl) : "master"; if (!input.getRef()) input.attrs.insert_or_assign("ref", isLocal ? readHead(actualUrl) : "master");
Attrs mutableAttrs({ Attrs mutableAttrs({
{"type", cacheType}, {"type", cacheType},
{"name", name}, {"name", name},
{"url", actualUrl}, {"url", actualUrl},
{"ref", *input->ref}, {"ref", *input.getRef()},
}); });
Path repoDir; Path repoDir;
if (isLocal) { if (isLocal) {
if (!input->rev) if (!input.getRev())
input->rev = Hash(chomp(runProgram("git", true, { "-C", actualUrl, "rev-parse", *input->ref })), htSHA1); input.attrs.insert_or_assign("rev",
Hash(chomp(runProgram("git", true, { "-C", actualUrl, "rev-parse", *input.getRef() })), htSHA1).gitRev());
repoDir = actualUrl; repoDir = actualUrl;
@ -233,8 +301,8 @@ struct GitInput : Input
if (auto res = getCache()->lookup(store, mutableAttrs)) { if (auto res = getCache()->lookup(store, mutableAttrs)) {
auto rev2 = Hash(getStrAttr(res->first, "rev"), htSHA1); auto rev2 = Hash(getStrAttr(res->first, "rev"), htSHA1);
if (!rev || rev == rev2) { if (!input.getRev() || input.getRev() == rev2) {
input->rev = rev2; input.attrs.insert_or_assign("rev", rev2.gitRev());
return makeResult(res->first, std::move(res->second)); return makeResult(res->first, std::move(res->second));
} }
} }
@ -248,18 +316,18 @@ struct GitInput : Input
} }
Path localRefFile = Path localRefFile =
input->ref->compare(0, 5, "refs/") == 0 input.getRef()->compare(0, 5, "refs/") == 0
? cacheDir + "/" + *input->ref ? cacheDir + "/" + *input.getRef()
: cacheDir + "/refs/heads/" + *input->ref; : cacheDir + "/refs/heads/" + *input.getRef();
bool doFetch; bool doFetch;
time_t now = time(0); time_t now = time(0);
/* If a rev was specified, we need to fetch if it's not in the /* If a rev was specified, we need to fetch if it's not in the
repo. */ repo. */
if (input->rev) { if (input.getRev()) {
try { try {
runProgram("git", true, { "-C", repoDir, "cat-file", "-e", input->rev->gitRev() }); runProgram("git", true, { "-C", repoDir, "cat-file", "-e", input.getRev()->gitRev() });
doFetch = false; doFetch = false;
} catch (ExecError & e) { } catch (ExecError & e) {
if (WIFEXITED(e.status)) { if (WIFEXITED(e.status)) {
@ -282,9 +350,10 @@ struct GitInput : Input
// FIXME: git stderr messes up our progress indicator, so // FIXME: git stderr messes up our progress indicator, so
// we're using --quiet for now. Should process its stderr. // we're using --quiet for now. Should process its stderr.
try { try {
auto fetchRef = input->ref->compare(0, 5, "refs/") == 0 auto ref = input.getRef();
? *input->ref auto fetchRef = ref->compare(0, 5, "refs/") == 0
: "refs/heads/" + *input->ref; ? *ref
: "refs/heads/" + *ref;
runProgram("git", true, { "-C", repoDir, "fetch", "--quiet", "--force", "--", actualUrl, fmt("%s:%s", fetchRef, fetchRef) }); runProgram("git", true, { "-C", repoDir, "fetch", "--quiet", "--force", "--", actualUrl, fmt("%s:%s", fetchRef, fetchRef) });
} catch (Error & e) { } catch (Error & e) {
if (!pathExists(localRefFile)) throw; if (!pathExists(localRefFile)) throw;
@ -300,8 +369,8 @@ struct GitInput : Input
utimes(localRefFile.c_str(), times); utimes(localRefFile.c_str(), times);
} }
if (!input->rev) if (!input.getRev())
input->rev = Hash(chomp(readFile(localRefFile)), htSHA1); input.attrs.insert_or_assign("rev", Hash(chomp(readFile(localRefFile)), htSHA1).gitRev());
} }
bool isShallow = chomp(runProgram("git", true, { "-C", repoDir, "rev-parse", "--is-shallow-repository" })) == "true"; bool isShallow = chomp(runProgram("git", true, { "-C", repoDir, "rev-parse", "--is-shallow-repository" })) == "true";
@ -311,7 +380,7 @@ struct GitInput : Input
// FIXME: check whether rev is an ancestor of ref. // FIXME: check whether rev is an ancestor of ref.
printTalkative("using revision %s of repo '%s'", input->rev->gitRev(), actualUrl); printTalkative("using revision %s of repo '%s'", input.getRev()->gitRev(), actualUrl);
/* Now that we know the ref, check again whether we have it in /* Now that we know the ref, check again whether we have it in
the store. */ the store. */
@ -333,7 +402,7 @@ struct GitInput : Input
runProgram("git", true, { "-C", tmpDir, "fetch", "--quiet", "--force", runProgram("git", true, { "-C", tmpDir, "fetch", "--quiet", "--force",
"--update-head-ok", "--", repoDir, "refs/*:refs/*" }); "--update-head-ok", "--", repoDir, "refs/*:refs/*" });
runProgram("git", true, { "-C", tmpDir, "checkout", "--quiet", input->rev->gitRev() }); runProgram("git", true, { "-C", tmpDir, "checkout", "--quiet", input.getRev()->gitRev() });
runProgram("git", true, { "-C", tmpDir, "remote", "add", "origin", actualUrl }); runProgram("git", true, { "-C", tmpDir, "remote", "add", "origin", actualUrl });
runProgram("git", true, { "-C", tmpDir, "submodule", "--quiet", "update", "--init", "--recursive" }); runProgram("git", true, { "-C", tmpDir, "submodule", "--quiet", "update", "--init", "--recursive" });
@ -342,7 +411,7 @@ struct GitInput : Input
// FIXME: should pipe this, or find some better way to extract a // FIXME: should pipe this, or find some better way to extract a
// revision. // revision.
auto source = sinkToSource([&](Sink & sink) { auto source = sinkToSource([&](Sink & sink) {
RunOptions gitOptions("git", { "-C", repoDir, "archive", input->rev->gitRev() }); RunOptions gitOptions("git", { "-C", repoDir, "archive", input.getRev()->gitRev() });
gitOptions.standardOut = &sink; gitOptions.standardOut = &sink;
runProgram2(gitOptions); runProgram2(gitOptions);
}); });
@ -352,18 +421,18 @@ struct GitInput : Input
auto storePath = store->addToStore(name, tmpDir, FileIngestionMethod::Recursive, htSHA256, filter); auto storePath = store->addToStore(name, tmpDir, FileIngestionMethod::Recursive, htSHA256, filter);
auto lastModified = std::stoull(runProgram("git", true, { "-C", repoDir, "log", "-1", "--format=%ct", input->rev->gitRev() })); auto lastModified = std::stoull(runProgram("git", true, { "-C", repoDir, "log", "-1", "--format=%ct", input.getRev()->gitRev() }));
Attrs infoAttrs({ Attrs infoAttrs({
{"rev", input->rev->gitRev()}, {"rev", input.getRev()->gitRev()},
{"lastModified", lastModified}, {"lastModified", lastModified},
}); });
if (!shallow) if (!shallow)
infoAttrs.insert_or_assign("revCount", infoAttrs.insert_or_assign("revCount",
std::stoull(runProgram("git", true, { "-C", repoDir, "rev-list", "--count", input->rev->gitRev() }))); std::stoull(runProgram("git", true, { "-C", repoDir, "rev-list", "--count", input.getRev()->gitRev() })));
if (!this->rev) if (!_input.getRev())
getCache()->add( getCache()->add(
store, store,
mutableAttrs, mutableAttrs,
@ -382,60 +451,6 @@ struct GitInput : Input
} }
}; };
struct GitInputScheme : InputScheme
{
std::unique_ptr<Input> inputFromURL(const ParsedURL & url) override
{
if (url.scheme != "git" &&
url.scheme != "git+http" &&
url.scheme != "git+https" &&
url.scheme != "git+ssh" &&
url.scheme != "git+file") return nullptr;
auto url2(url);
if (hasPrefix(url2.scheme, "git+")) url2.scheme = std::string(url2.scheme, 4);
url2.query.clear();
Attrs attrs;
attrs.emplace("type", "git");
for (auto &[name, value] : url.query) {
if (name == "rev" || name == "ref")
attrs.emplace(name, value);
else
url2.query.emplace(name, value);
}
attrs.emplace("url", url2.to_string());
return inputFromAttrs(attrs);
}
std::unique_ptr<Input> inputFromAttrs(const Attrs & attrs) override
{
if (maybeGetStrAttr(attrs, "type") != "git") return {};
for (auto & [name, value] : attrs)
if (name != "type" && name != "url" && name != "ref" && name != "rev" && name != "shallow" && name != "submodules")
throw Error("unsupported Git input attribute '%s'", name);
auto input = std::make_unique<GitInput>(parseURL(getStrAttr(attrs, "url")));
if (auto ref = maybeGetStrAttr(attrs, "ref")) {
if (std::regex_search(*ref, badGitRefRegex))
throw BadURL("invalid Git branch/tag name '%s'", *ref);
input->ref = *ref;
}
if (auto rev = maybeGetStrAttr(attrs, "rev"))
input->rev = Hash(*rev, htSHA1);
input->shallow = maybeGetBoolAttr(attrs, "shallow").value_or(false);
input->submodules = maybeGetBoolAttr(attrs, "submodules").value_or(false);
return input;
}
};
static auto r1 = OnStartup([] { registerInputScheme(std::make_unique<GitInputScheme>()); }); static auto r1 = OnStartup([] { registerInputScheme(std::make_unique<GitInputScheme>()); });
} }

View file

@ -8,81 +8,142 @@
namespace nix::fetchers { namespace nix::fetchers {
std::regex ownerRegex("[a-zA-Z][a-zA-Z0-9_-]*", std::regex::ECMAScript); // A github or gitlab url
std::regex repoRegex("[a-zA-Z][a-zA-Z0-9_-]*", std::regex::ECMAScript); const static std::string urlRegexS = "[a-zA-Z0-9.]*"; // FIXME: check
std::regex urlRegex(urlRegexS, std::regex::ECMAScript);
struct GitHubInput : Input struct GitArchiveInputScheme : InputScheme
{ {
std::string owner; virtual std::string type() = 0;
std::string repo;
std::optional<std::string> ref; std::optional<Input> inputFromURL(const ParsedURL & url) override
{
if (url.scheme != type()) return {};
auto path = tokenizeString<std::vector<std::string>>(url.path, "/");
std::optional<Hash> rev; std::optional<Hash> rev;
std::optional<std::string> ref;
std::optional<std::string> host_url;
std::string type() const override { return "github"; } if (path.size() == 2) {
} else if (path.size() == 3) {
if (std::regex_match(path[2], revRegex))
rev = Hash(path[2], htSHA1);
else if (std::regex_match(path[2], refRegex))
ref = path[2];
else
throw BadURL("in URL '%s', '%s' is not a commit hash or branch/tag name", url.url, path[2]);
} else
throw BadURL("URL '%s' is invalid", url.url);
bool operator ==(const Input & other) const override for (auto &[name, value] : url.query) {
{ if (name == "rev") {
auto other2 = dynamic_cast<const GitHubInput *>(&other); if (rev)
return throw BadURL("URL '%s' contains multiple commit hashes", url.url);
other2 rev = Hash(value, htSHA1);
&& owner == other2->owner }
&& repo == other2->repo else if (name == "ref") {
&& rev == other2->rev if (!std::regex_match(value, refRegex))
&& ref == other2->ref; throw BadURL("URL '%s' contains an invalid branch/tag name", url.url);
if (ref)
throw BadURL("URL '%s' contains multiple branch/tag names", url.url);
ref = value;
}
else if (name == "url") {
if (!std::regex_match(value, urlRegex))
throw BadURL("URL '%s' contains an invalid instance url", url.url);
host_url = value;
}
// FIXME: barf on unsupported attributes
} }
bool isImmutable() const override if (ref && rev)
{ throw BadURL("URL '%s' contains both a commit hash and a branch/tag name %s %s", url.url, *ref, rev->gitRev());
return (bool) rev || narHash;
Input input;
input.attrs.insert_or_assign("type", type());
input.attrs.insert_or_assign("owner", path[0]);
input.attrs.insert_or_assign("repo", path[1]);
if (rev) input.attrs.insert_or_assign("rev", rev->gitRev());
if (ref) input.attrs.insert_or_assign("ref", *ref);
if (host_url) input.attrs.insert_or_assign("url", *host_url);
return input;
} }
std::optional<std::string> getRef() const override { return ref; } std::optional<Input> inputFromAttrs(const Attrs & attrs) override
std::optional<Hash> getRev() const override { return rev; }
ParsedURL toURL() const override
{ {
if (maybeGetStrAttr(attrs, "type") != type()) return {};
for (auto & [name, value] : attrs)
if (name != "type" && name != "owner" && name != "repo" && name != "ref" && name != "rev" && name != "narHash" && name != "lastModified")
throw Error("unsupported input attribute '%s'", name);
getStrAttr(attrs, "owner");
getStrAttr(attrs, "repo");
Input input;
input.attrs = attrs;
return input;
}
ParsedURL toURL(const Input & input) override
{
auto owner = getStrAttr(input.attrs, "owner");
auto repo = getStrAttr(input.attrs, "repo");
auto ref = input.getRef();
auto rev = input.getRev();
auto path = owner + "/" + repo; auto path = owner + "/" + repo;
assert(!(ref && rev)); assert(!(ref && rev));
if (ref) path += "/" + *ref; if (ref) path += "/" + *ref;
if (rev) path += "/" + rev->to_string(Base16, false); if (rev) path += "/" + rev->to_string(Base16, false);
return ParsedURL { return ParsedURL {
.scheme = "github", .scheme = type(),
.path = path, .path = path,
}; };
} }
Attrs toAttrsInternal() const override bool hasAllInfo(const Input & input) override
{ {
Attrs attrs; return input.getRev() && maybeGetIntAttr(input.attrs, "lastModified");
attrs.emplace("owner", owner);
attrs.emplace("repo", repo);
if (ref)
attrs.emplace("ref", *ref);
if (rev)
attrs.emplace("rev", rev->gitRev());
return attrs;
} }
std::pair<Tree, std::shared_ptr<const Input>> fetchTreeInternal(nix::ref<Store> store) const override Input applyOverrides(
const Input & _input,
std::optional<std::string> ref,
std::optional<Hash> rev) override
{ {
auto rev = this->rev; auto input(_input);
auto ref = this->ref.value_or("master"); if (rev && ref)
throw BadURL("cannot apply both a commit hash (%s) and a branch/tag name ('%s') to input '%s'",
if (!rev) { rev->gitRev(), *ref, input.to_string());
auto url = fmt("https://api.github.com/repos/%s/%s/commits/%s", if (rev) {
owner, repo, ref); input.attrs.insert_or_assign("rev", rev->gitRev());
auto json = nlohmann::json::parse( input.attrs.erase("ref");
readFile( }
store->toRealPath( if (ref) {
downloadFile(store, url, "source", false).storePath))); input.attrs.insert_or_assign("ref", *ref);
rev = Hash(std::string { json["sha"] }, htSHA1); input.attrs.erase("rev");
debug("HEAD revision for '%s' is %s", url, rev->gitRev()); }
return input;
} }
auto input = std::make_shared<GitHubInput>(*this); virtual Hash getRevFromRef(nix::ref<Store> store, const Input & input) const = 0;
input->ref = {};
input->rev = *rev; virtual std::string getDownloadUrl(const Input & input) const = 0;
std::pair<Tree, Input> fetch(ref<Store> store, const Input & _input) override
{
Input input(_input);
if (!maybeGetStrAttr(input.attrs, "ref")) input.attrs.insert_or_assign("ref", "HEAD");
auto rev = input.getRev();
if (!rev) rev = getRevFromRef(store, input);
input.attrs.erase("ref");
input.attrs.insert_or_assign("rev", rev->gitRev());
Attrs immutableAttrs({ Attrs immutableAttrs({
{"type", "git-tarball"}, {"type", "git-tarball"},
@ -90,36 +151,25 @@ struct GitHubInput : Input
}); });
if (auto res = getCache()->lookup(store, immutableAttrs)) { if (auto res = getCache()->lookup(store, immutableAttrs)) {
input.attrs.insert_or_assign("lastModified", getIntAttr(res->first, "lastModified"));
return { return {
Tree{ Tree(store->toRealPath(res->second), std::move(res->second)),
.actualPath = store->toRealPath(res->second),
.storePath = std::move(res->second),
.info = TreeInfo {
.lastModified = getIntAttr(res->first, "lastModified"),
},
},
input input
}; };
} }
// FIXME: use regular /archive URLs instead? api.github.com auto url = getDownloadUrl(input);
// might have stricter rate limits.
auto url = fmt("https://api.github.com/repos/%s/%s/tarball/%s", auto [tree, lastModified] = downloadTarball(store, url, "source", true);
owner, repo, rev->to_string(Base16, false));
std::string accessToken = settings.githubAccessToken.get(); input.attrs.insert_or_assign("lastModified", lastModified);
if (accessToken != "")
url += "?access_token=" + accessToken;
auto tree = downloadTarball(store, url, "source", true);
getCache()->add( getCache()->add(
store, store,
immutableAttrs, immutableAttrs,
{ {
{"rev", rev->gitRev()}, {"rev", rev->gitRev()},
{"lastModified", *tree.info.lastModified} {"lastModified", lastModified}
}, },
tree.storePath, tree.storePath,
true); true);
@ -128,68 +178,96 @@ struct GitHubInput : Input
} }
}; };
struct GitHubInputScheme : InputScheme struct GitHubInputScheme : GitArchiveInputScheme
{ {
std::unique_ptr<Input> inputFromURL(const ParsedURL & url) override std::string type() override { return "github"; }
Hash getRevFromRef(nix::ref<Store> store, const Input & input) const override
{ {
if (url.scheme != "github") return nullptr; auto host_url = maybeGetStrAttr(input.attrs, "url").value_or("github.com");
auto url = fmt("https://api.%s/repos/%s/%s/commits/%s", // FIXME: check
auto path = tokenizeString<std::vector<std::string>>(url.path, "/"); host_url, getStrAttr(input.attrs, "owner"), getStrAttr(input.attrs, "repo"), *input.getRef());
auto input = std::make_unique<GitHubInput>(); auto json = nlohmann::json::parse(
readFile(
if (path.size() == 2) { store->toRealPath(
} else if (path.size() == 3) { downloadFile(store, url, "source", false).storePath)));
if (std::regex_match(path[2], revRegex)) auto rev = Hash(std::string { json["sha"] }, htSHA1);
input->rev = Hash(path[2], htSHA1); debug("HEAD revision for '%s' is %s", url, rev.gitRev());
else if (std::regex_match(path[2], refRegex)) return rev;
input->ref = path[2];
else
throw BadURL("in GitHub URL '%s', '%s' is not a commit hash or branch/tag name", url.url, path[2]);
} else
throw BadURL("GitHub URL '%s' is invalid", url.url);
for (auto &[name, value] : url.query) {
if (name == "rev") {
if (input->rev)
throw BadURL("GitHub URL '%s' contains multiple commit hashes", url.url);
input->rev = Hash(value, htSHA1);
}
else if (name == "ref") {
if (!std::regex_match(value, refRegex))
throw BadURL("GitHub URL '%s' contains an invalid branch/tag name", url.url);
if (input->ref)
throw BadURL("GitHub URL '%s' contains multiple branch/tag names", url.url);
input->ref = value;
}
} }
if (input->ref && input->rev) std::string getDownloadUrl(const Input & input) const override
throw BadURL("GitHub URL '%s' contains both a commit hash and a branch/tag name", url.url);
input->owner = path[0];
input->repo = path[1];
return input;
}
std::unique_ptr<Input> inputFromAttrs(const Attrs & attrs) override
{ {
if (maybeGetStrAttr(attrs, "type") != "github") return {}; // FIXME: use regular /archive URLs instead? api.github.com
// might have stricter rate limits.
auto host_url = maybeGetStrAttr(input.attrs, "url").value_or("github.com");
auto url = fmt("https://api.%s/repos/%s/%s/tarball/%s", // FIXME: check if this is correct for self hosted instances
host_url, getStrAttr(input.attrs, "owner"), getStrAttr(input.attrs, "repo"),
input.getRev()->to_string(Base16, false));
for (auto & [name, value] : attrs) std::string accessToken = settings.githubAccessToken.get();
if (name != "type" && name != "owner" && name != "repo" && name != "ref" && name != "rev") if (accessToken != "")
throw Error("unsupported GitHub input attribute '%s'", name); url += "?access_token=" + accessToken;
auto input = std::make_unique<GitHubInput>(); return url;
input->owner = getStrAttr(attrs, "owner"); }
input->repo = getStrAttr(attrs, "repo");
input->ref = maybeGetStrAttr(attrs, "ref"); void clone(const Input & input, const Path & destDir) override
if (auto rev = maybeGetStrAttr(attrs, "rev")) {
input->rev = Hash(*rev, htSHA1); auto host_url = maybeGetStrAttr(input.attrs, "url").value_or("github.com");
return input; Input::fromURL(fmt("git+ssh://git@%s/%s/%s.git",
host_url, getStrAttr(input.attrs, "owner"), getStrAttr(input.attrs, "repo")))
.applyOverrides(input.getRef().value_or("HEAD"), input.getRev())
.clone(destDir);
}
};
struct GitLabInputScheme : GitArchiveInputScheme
{
std::string type() override { return "gitlab"; }
Hash getRevFromRef(nix::ref<Store> store, const Input & input) const override
{
auto host_url = maybeGetStrAttr(input.attrs, "url").value_or("gitlab.com");
auto url = fmt("https://%s/api/v4/projects/%s%%2F%s/repository/commits?ref_name=%s",
host_url, getStrAttr(input.attrs, "owner"), getStrAttr(input.attrs, "repo"), *input.getRef());
auto json = nlohmann::json::parse(
readFile(
store->toRealPath(
downloadFile(store, url, "source", false).storePath)));
auto rev = Hash(std::string(json[0]["id"]), htSHA1);
debug("HEAD revision for '%s' is %s", url, rev.gitRev());
return rev;
}
std::string getDownloadUrl(const Input & input) const override
{
// FIXME: This endpoint has a rate limit threshold of 5 requests per minute
auto host_url = maybeGetStrAttr(input.attrs, "url").value_or("gitlab.com");
auto url = fmt("https://%s/api/v4/projects/%s%%2F%s/repository/archive.tar.gz?sha=%s",
host_url, getStrAttr(input.attrs, "owner"), getStrAttr(input.attrs, "repo"),
input.getRev()->to_string(Base16, false));
/* # FIXME: add privat token auth (`curl --header "PRIVATE-TOKEN: <your_access_token>"`)
std::string accessToken = settings.githubAccessToken.get();
if (accessToken != "")
url += "?access_token=" + accessToken;*/
return url;
}
void clone(const Input & input, const Path & destDir) override
{
auto host_url = maybeGetStrAttr(input.attrs, "url").value_or("gitlab.com");
// FIXME: get username somewhere
Input::fromURL(fmt("git+ssh://git@%s/%s/%s.git",
host_url, getStrAttr(input.attrs, "owner"), getStrAttr(input.attrs, "repo")))
.applyOverrides(input.getRef().value_or("HEAD"), input.getRev())
.clone(destDir);
} }
}; };
static auto r1 = OnStartup([] { registerInputScheme(std::make_unique<GitHubInputScheme>()); }); static auto r1 = OnStartup([] { registerInputScheme(std::make_unique<GitHubInputScheme>()); });
static auto r2 = OnStartup([] { registerInputScheme(std::make_unique<GitLabInputScheme>()); });
} }

104
src/libfetchers/indirect.cc Normal file
View file

@ -0,0 +1,104 @@
#include "fetchers.hh"
namespace nix::fetchers {
std::regex flakeRegex("[a-zA-Z][a-zA-Z0-9_-]*", std::regex::ECMAScript);
struct IndirectInputScheme : InputScheme
{
std::optional<Input> inputFromURL(const ParsedURL & url) override
{
if (url.scheme != "flake") return {};
auto path = tokenizeString<std::vector<std::string>>(url.path, "/");
std::optional<Hash> rev;
std::optional<std::string> ref;
if (path.size() == 1) {
} else if (path.size() == 2) {
if (std::regex_match(path[1], revRegex))
rev = Hash(path[1], htSHA1);
else if (std::regex_match(path[1], refRegex))
ref = path[1];
else
throw BadURL("in flake URL '%s', '%s' is not a commit hash or branch/tag name", url.url, path[1]);
} else if (path.size() == 3) {
if (!std::regex_match(path[1], refRegex))
throw BadURL("in flake URL '%s', '%s' is not a branch/tag name", url.url, path[1]);
ref = path[1];
if (!std::regex_match(path[2], revRegex))
throw BadURL("in flake URL '%s', '%s' is not a commit hash", url.url, path[2]);
rev = Hash(path[2], htSHA1);
} else
throw BadURL("GitHub URL '%s' is invalid", url.url);
std::string id = path[0];
if (!std::regex_match(id, flakeRegex))
throw BadURL("'%s' is not a valid flake ID", id);
// FIXME: forbid query params?
Input input;
input.direct = false;
input.attrs.insert_or_assign("type", "indirect");
input.attrs.insert_or_assign("id", id);
if (rev) input.attrs.insert_or_assign("rev", rev->gitRev());
if (ref) input.attrs.insert_or_assign("ref", *ref);
return input;
}
std::optional<Input> inputFromAttrs(const Attrs & attrs) override
{
if (maybeGetStrAttr(attrs, "type") != "indirect") return {};
for (auto & [name, value] : attrs)
if (name != "type" && name != "id" && name != "ref" && name != "rev" && name != "narHash")
throw Error("unsupported indirect input attribute '%s'", name);
auto id = getStrAttr(attrs, "id");
if (!std::regex_match(id, flakeRegex))
throw BadURL("'%s' is not a valid flake ID", id);
Input input;
input.direct = false;
input.attrs = attrs;
return input;
}
ParsedURL toURL(const Input & input) override
{
ParsedURL url;
url.scheme = "flake";
url.path = getStrAttr(input.attrs, "id");
if (auto ref = input.getRef()) { url.path += '/'; url.path += *ref; };
if (auto rev = input.getRev()) { url.path += '/'; url.path += rev->gitRev(); };
return url;
}
bool hasAllInfo(const Input & input) override
{
return false;
}
Input applyOverrides(
const Input & _input,
std::optional<std::string> ref,
std::optional<Hash> rev) override
{
auto input(_input);
if (rev) input.attrs.insert_or_assign("rev", rev->gitRev());
if (ref) input.attrs.insert_or_assign("ref", *ref);
return input;
}
std::pair<Tree, Input> fetch(ref<Store> store, const Input & input) override
{
throw Error("indirect input '%s' cannot be fetched directly", input.to_string());
}
};
static auto r1 = OnStartup([] { registerInputScheme(std::make_unique<IndirectInputScheme>()); });
}

View file

@ -10,76 +10,124 @@ using namespace std::string_literals;
namespace nix::fetchers { namespace nix::fetchers {
struct MercurialInput : Input struct MercurialInputScheme : InputScheme
{ {
ParsedURL url; std::optional<Input> inputFromURL(const ParsedURL & url) override
std::optional<std::string> ref;
std::optional<Hash> rev;
MercurialInput(const ParsedURL & url) : url(url)
{ }
std::string type() const override { return "hg"; }
bool operator ==(const Input & other) const override
{ {
auto other2 = dynamic_cast<const MercurialInput *>(&other); if (url.scheme != "hg+http" &&
return url.scheme != "hg+https" &&
other2 url.scheme != "hg+ssh" &&
&& url == other2->url url.scheme != "hg+file") return {};
&& rev == other2->rev
&& ref == other2->ref; auto url2(url);
url2.scheme = std::string(url2.scheme, 3);
url2.query.clear();
Attrs attrs;
attrs.emplace("type", "hg");
for (auto &[name, value] : url.query) {
if (name == "rev" || name == "ref")
attrs.emplace(name, value);
else
url2.query.emplace(name, value);
} }
bool isImmutable() const override attrs.emplace("url", url2.to_string());
{
return (bool) rev || narHash; return inputFromAttrs(attrs);
} }
std::optional<std::string> getRef() const override { return ref; } std::optional<Input> inputFromAttrs(const Attrs & attrs) override
std::optional<Hash> getRev() const override { return rev; }
ParsedURL toURL() const override
{ {
ParsedURL url2(url); if (maybeGetStrAttr(attrs, "type") != "hg") return {};
url2.scheme = "hg+" + url2.scheme;
if (rev) url2.query.insert_or_assign("rev", rev->gitRev()); for (auto & [name, value] : attrs)
if (ref) url2.query.insert_or_assign("ref", *ref); if (name != "type" && name != "url" && name != "ref" && name != "rev" && name != "revCount" && name != "narHash")
throw Error("unsupported Mercurial input attribute '%s'", name);
parseURL(getStrAttr(attrs, "url"));
if (auto ref = maybeGetStrAttr(attrs, "ref")) {
if (!std::regex_match(*ref, refRegex))
throw BadURL("invalid Mercurial branch/tag name '%s'", *ref);
}
Input input;
input.attrs = attrs;
return input;
}
ParsedURL toURL(const Input & input) override
{
auto url = parseURL(getStrAttr(input.attrs, "url"));
url.scheme = "hg+" + url.scheme;
if (auto rev = input.getRev()) url.query.insert_or_assign("rev", rev->gitRev());
if (auto ref = input.getRef()) url.query.insert_or_assign("ref", *ref);
return url; return url;
} }
Attrs toAttrsInternal() const override bool hasAllInfo(const Input & input) override
{ {
Attrs attrs; // FIXME: ugly, need to distinguish between dirty and clean
attrs.emplace("url", url.to_string()); // default trees.
if (ref) return input.getRef() == "default" || maybeGetIntAttr(input.attrs, "revCount");
attrs.emplace("ref", *ref);
if (rev)
attrs.emplace("rev", rev->gitRev());
return attrs;
} }
std::pair<bool, std::string> getActualUrl() const Input applyOverrides(
const Input & input,
std::optional<std::string> ref,
std::optional<Hash> rev) override
{ {
auto res(input);
if (rev) res.attrs.insert_or_assign("rev", rev->gitRev());
if (ref) res.attrs.insert_or_assign("ref", *ref);
return res;
}
std::optional<Path> getSourcePath(const Input & input) override
{
auto url = parseURL(getStrAttr(input.attrs, "url"));
if (url.scheme == "file" && !input.getRef() && !input.getRev())
return url.path;
return {};
}
void markChangedFile(const Input & input, std::string_view file, std::optional<std::string> commitMsg) override
{
auto sourcePath = getSourcePath(input);
assert(sourcePath);
// FIXME: shut up if file is already tracked.
runProgram("hg", true,
{ "add", *sourcePath + "/" + std::string(file) });
if (commitMsg)
runProgram("hg", true,
{ "commit", *sourcePath + "/" + std::string(file), "-m", *commitMsg });
}
std::pair<bool, std::string> getActualUrl(const Input & input) const
{
auto url = parseURL(getStrAttr(input.attrs, "url"));
bool isLocal = url.scheme == "file"; bool isLocal = url.scheme == "file";
return {isLocal, isLocal ? url.path : url.base}; return {isLocal, isLocal ? url.path : url.base};
} }
std::pair<Tree, std::shared_ptr<const Input>> fetchTreeInternal(nix::ref<Store> store) const override std::pair<Tree, Input> fetch(ref<Store> store, const Input & _input) override
{ {
auto name = "source"; auto name = "source";
auto input = std::make_shared<MercurialInput>(*this); Input input(_input);
auto [isLocal, actualUrl_] = getActualUrl(); auto [isLocal, actualUrl_] = getActualUrl(input);
auto actualUrl = actualUrl_; // work around clang bug auto actualUrl = actualUrl_; // work around clang bug
// FIXME: return lastModified. // FIXME: return lastModified.
// FIXME: don't clone local repositories. // FIXME: don't clone local repositories.
if (!input->ref && !input->rev && isLocal && pathExists(actualUrl + "/.hg")) { if (!input.getRef() && !input.getRev() && isLocal && pathExists(actualUrl + "/.hg")) {
bool clean = runProgram("hg", true, { "status", "-R", actualUrl, "--modified", "--added", "--removed" }) == ""; bool clean = runProgram("hg", true, { "status", "-R", actualUrl, "--modified", "--added", "--removed" }) == "";
@ -94,7 +142,7 @@ struct MercurialInput : Input
if (settings.warnDirty) if (settings.warnDirty)
warn("Mercurial tree '%s' is unclean", actualUrl); warn("Mercurial tree '%s' is unclean", actualUrl);
input->ref = chomp(runProgram("hg", true, { "branch", "-R", actualUrl })); input.attrs.insert_or_assign("ref", chomp(runProgram("hg", true, { "branch", "-R", actualUrl })));
auto files = tokenizeString<std::set<std::string>>( auto files = tokenizeString<std::set<std::string>>(
runProgram("hg", true, { "status", "-R", actualUrl, "--clean", "--modified", "--added", "--no-status", "--print0" }), "\0"s); runProgram("hg", true, { "status", "-R", actualUrl, "--clean", "--modified", "--added", "--no-status", "--print0" }), "\0"s);
@ -116,60 +164,54 @@ struct MercurialInput : Input
auto storePath = store->addToStore("source", actualUrl, FileIngestionMethod::Recursive, htSHA256, filter); auto storePath = store->addToStore("source", actualUrl, FileIngestionMethod::Recursive, htSHA256, filter);
return {Tree { return {
.actualPath = store->printStorePath(storePath), Tree(store->printStorePath(storePath), std::move(storePath)),
.storePath = std::move(storePath), input
}, input}; };
} }
} }
if (!input->ref) input->ref = "default"; if (!input.getRef()) input.attrs.insert_or_assign("ref", "default");
auto getImmutableAttrs = [&]() auto getImmutableAttrs = [&]()
{ {
return Attrs({ return Attrs({
{"type", "hg"}, {"type", "hg"},
{"name", name}, {"name", name},
{"rev", input->rev->gitRev()}, {"rev", input.getRev()->gitRev()},
}); });
}; };
auto makeResult = [&](const Attrs & infoAttrs, StorePath && storePath) auto makeResult = [&](const Attrs & infoAttrs, StorePath && storePath)
-> std::pair<Tree, std::shared_ptr<const Input>> -> std::pair<Tree, Input>
{ {
assert(input->rev); assert(input.getRev());
assert(!rev || rev == input->rev); assert(!_input.getRev() || _input.getRev() == input.getRev());
input.attrs.insert_or_assign("revCount", getIntAttr(infoAttrs, "revCount"));
return { return {
Tree{ Tree(store->toRealPath(storePath), std::move(storePath)),
.actualPath = store->toRealPath(storePath),
.storePath = std::move(storePath),
.info = TreeInfo {
.revCount = getIntAttr(infoAttrs, "revCount"),
},
},
input input
}; };
}; };
if (input->rev) { if (input.getRev()) {
if (auto res = getCache()->lookup(store, getImmutableAttrs())) if (auto res = getCache()->lookup(store, getImmutableAttrs()))
return makeResult(res->first, std::move(res->second)); return makeResult(res->first, std::move(res->second));
} }
assert(input->rev || input->ref); auto revOrRef = input.getRev() ? input.getRev()->gitRev() : *input.getRef();
auto revOrRef = input->rev ? input->rev->gitRev() : *input->ref;
Attrs mutableAttrs({ Attrs mutableAttrs({
{"type", "hg"}, {"type", "hg"},
{"name", name}, {"name", name},
{"url", actualUrl}, {"url", actualUrl},
{"ref", *input->ref}, {"ref", *input.getRef()},
}); });
if (auto res = getCache()->lookup(store, mutableAttrs)) { if (auto res = getCache()->lookup(store, mutableAttrs)) {
auto rev2 = Hash(getStrAttr(res->first, "rev"), htSHA1); auto rev2 = Hash(getStrAttr(res->first, "rev"), htSHA1);
if (!rev || rev == rev2) { if (!input.getRev() || input.getRev() == rev2) {
input->rev = rev2; input.attrs.insert_or_assign("rev", rev2.gitRev());
return makeResult(res->first, std::move(res->second)); return makeResult(res->first, std::move(res->second));
} }
} }
@ -178,10 +220,10 @@ struct MercurialInput : Input
/* If this is a commit hash that we already have, we don't /* If this is a commit hash that we already have, we don't
have to pull again. */ have to pull again. */
if (!(input->rev if (!(input.getRev()
&& pathExists(cacheDir) && pathExists(cacheDir)
&& runProgram( && runProgram(
RunOptions("hg", { "log", "-R", cacheDir, "-r", input->rev->gitRev(), "--template", "1" }) RunOptions("hg", { "log", "-R", cacheDir, "-r", input.getRev()->gitRev(), "--template", "1" })
.killStderr(true)).second == "1")) .killStderr(true)).second == "1"))
{ {
Activity act(*logger, lvlTalkative, actUnknown, fmt("fetching Mercurial repository '%s'", actualUrl)); Activity act(*logger, lvlTalkative, actUnknown, fmt("fetching Mercurial repository '%s'", actualUrl));
@ -210,9 +252,9 @@ struct MercurialInput : Input
runProgram("hg", true, { "log", "-R", cacheDir, "-r", revOrRef, "--template", "{node} {rev} {branch}" })); runProgram("hg", true, { "log", "-R", cacheDir, "-r", revOrRef, "--template", "{node} {rev} {branch}" }));
assert(tokens.size() == 3); assert(tokens.size() == 3);
input->rev = Hash(tokens[0], htSHA1); input.attrs.insert_or_assign("rev", Hash(tokens[0], htSHA1).gitRev());
auto revCount = std::stoull(tokens[1]); auto revCount = std::stoull(tokens[1]);
input->ref = tokens[2]; input.attrs.insert_or_assign("ref", tokens[2]);
if (auto res = getCache()->lookup(store, getImmutableAttrs())) if (auto res = getCache()->lookup(store, getImmutableAttrs()))
return makeResult(res->first, std::move(res->second)); return makeResult(res->first, std::move(res->second));
@ -220,18 +262,18 @@ struct MercurialInput : Input
Path tmpDir = createTempDir(); Path tmpDir = createTempDir();
AutoDelete delTmpDir(tmpDir, true); AutoDelete delTmpDir(tmpDir, true);
runProgram("hg", true, { "archive", "-R", cacheDir, "-r", input->rev->gitRev(), tmpDir }); runProgram("hg", true, { "archive", "-R", cacheDir, "-r", input.getRev()->gitRev(), tmpDir });
deletePath(tmpDir + "/.hg_archival.txt"); deletePath(tmpDir + "/.hg_archival.txt");
auto storePath = store->addToStore(name, tmpDir); auto storePath = store->addToStore(name, tmpDir);
Attrs infoAttrs({ Attrs infoAttrs({
{"rev", input->rev->gitRev()}, {"rev", input.getRev()->gitRev()},
{"revCount", (int64_t) revCount}, {"revCount", (int64_t) revCount},
}); });
if (!this->rev) if (!_input.getRev())
getCache()->add( getCache()->add(
store, store,
mutableAttrs, mutableAttrs,
@ -250,54 +292,6 @@ struct MercurialInput : Input
} }
}; };
struct MercurialInputScheme : InputScheme
{
std::unique_ptr<Input> inputFromURL(const ParsedURL & url) override
{
if (url.scheme != "hg+http" &&
url.scheme != "hg+https" &&
url.scheme != "hg+ssh" &&
url.scheme != "hg+file") return nullptr;
auto url2(url);
url2.scheme = std::string(url2.scheme, 3);
url2.query.clear();
Attrs attrs;
attrs.emplace("type", "hg");
for (auto &[name, value] : url.query) {
if (name == "rev" || name == "ref")
attrs.emplace(name, value);
else
url2.query.emplace(name, value);
}
attrs.emplace("url", url2.to_string());
return inputFromAttrs(attrs);
}
std::unique_ptr<Input> inputFromAttrs(const Attrs & attrs) override
{
if (maybeGetStrAttr(attrs, "type") != "hg") return {};
for (auto & [name, value] : attrs)
if (name != "type" && name != "url" && name != "ref" && name != "rev")
throw Error("unsupported Mercurial input attribute '%s'", name);
auto input = std::make_unique<MercurialInput>(parseURL(getStrAttr(attrs, "url")));
if (auto ref = maybeGetStrAttr(attrs, "ref")) {
if (!std::regex_match(*ref, refRegex))
throw BadURL("invalid Mercurial branch/tag name '%s'", *ref);
input->ref = *ref;
}
if (auto rev = maybeGetStrAttr(attrs, "rev"))
input->rev = Hash(*rev, htSHA1);
return input;
}
};
static auto r1 = OnStartup([] { registerInputScheme(std::make_unique<MercurialInputScheme>()); }); static auto r1 = OnStartup([] { registerInputScheme(std::make_unique<MercurialInputScheme>()); });
} }

View file

@ -3,65 +3,86 @@
namespace nix::fetchers { namespace nix::fetchers {
struct PathInput : Input struct PathInputScheme : InputScheme
{ {
Path path; std::optional<Input> inputFromURL(const ParsedURL & url) override
{
if (url.scheme != "path") return {};
/* Allow the user to pass in "fake" tree info attributes. This is if (url.authority && *url.authority != "")
useful for making a pinned tree work the same as the repository throw Error("path URL '%s' should not have an authority ('%s')", url.url, *url.authority);
from which is exported
Input input;
input.attrs.insert_or_assign("type", "path");
input.attrs.insert_or_assign("path", url.path);
for (auto & [name, value] : url.query)
if (name == "rev" || name == "narHash")
input.attrs.insert_or_assign(name, value);
else if (name == "revCount" || name == "lastModified") {
uint64_t n;
if (!string2Int(value, n))
throw Error("path URL '%s' has invalid parameter '%s'", url.to_string(), name);
input.attrs.insert_or_assign(name, n);
}
else
throw Error("path URL '%s' has unsupported parameter '%s'", url.to_string(), name);
return input;
}
std::optional<Input> inputFromAttrs(const Attrs & attrs) override
{
if (maybeGetStrAttr(attrs, "type") != "path") return {};
getStrAttr(attrs, "path");
for (auto & [name, value] : attrs)
/* Allow the user to pass in "fake" tree info
attributes. This is useful for making a pinned tree
work the same as the repository from which is exported
(e.g. path:/nix/store/...-source?lastModified=1585388205&rev=b0c285...). */ (e.g. path:/nix/store/...-source?lastModified=1585388205&rev=b0c285...). */
std::optional<Hash> rev; if (name == "type" || name == "rev" || name == "revCount" || name == "lastModified" || name == "narHash" || name == "path")
std::optional<uint64_t> revCount; // checked in Input::fromAttrs
std::optional<time_t> lastModified; ;
else
throw Error("unsupported path input attribute '%s'", name);
std::string type() const override { return "path"; } Input input;
input.attrs = attrs;
std::optional<Hash> getRev() const override { return rev; } return input;
bool operator ==(const Input & other) const override
{
auto other2 = dynamic_cast<const PathInput *>(&other);
return
other2
&& path == other2->path
&& rev == other2->rev
&& revCount == other2->revCount
&& lastModified == other2->lastModified;
} }
bool isImmutable() const override ParsedURL toURL(const Input & input) override
{ {
return (bool) narHash; auto query = attrsToQuery(input.attrs);
}
ParsedURL toURL() const override
{
auto query = attrsToQuery(toAttrsInternal());
query.erase("path"); query.erase("path");
query.erase("type");
return ParsedURL { return ParsedURL {
.scheme = "path", .scheme = "path",
.path = path, .path = getStrAttr(input.attrs, "path"),
.query = query, .query = query,
}; };
} }
Attrs toAttrsInternal() const override bool hasAllInfo(const Input & input) override
{ {
Attrs attrs; return true;
attrs.emplace("path", path);
if (rev)
attrs.emplace("rev", rev->gitRev());
if (revCount)
attrs.emplace("revCount", *revCount);
if (lastModified)
attrs.emplace("lastModified", *lastModified);
return attrs;
} }
std::pair<Tree, std::shared_ptr<const Input>> fetchTreeInternal(nix::ref<Store> store) const override std::optional<Path> getSourcePath(const Input & input) override
{ {
auto input = std::make_shared<PathInput>(*this); return getStrAttr(input.attrs, "path");
}
void markChangedFile(const Input & input, std::string_view file, std::optional<std::string> commitMsg) override
{
// nothing to do
}
std::pair<Tree, Input> fetch(ref<Store> store, const Input & input) override
{
auto path = getStrAttr(input.attrs, "path");
// FIXME: check whether access to 'path' is allowed. // FIXME: check whether access to 'path' is allowed.
@ -74,73 +95,11 @@ struct PathInput : Input
// FIXME: try to substitute storePath. // FIXME: try to substitute storePath.
storePath = store->addToStore("source", path); storePath = store->addToStore("source", path);
return return {
{ Tree(store->toRealPath(*storePath), std::move(*storePath)),
Tree {
.actualPath = store->toRealPath(*storePath),
.storePath = std::move(*storePath),
.info = TreeInfo {
.revCount = revCount,
.lastModified = lastModified
}
},
input input
}; };
} }
};
struct PathInputScheme : InputScheme
{
std::unique_ptr<Input> inputFromURL(const ParsedURL & url) override
{
if (url.scheme != "path") return nullptr;
auto input = std::make_unique<PathInput>();
input->path = url.path;
for (auto & [name, value] : url.query)
if (name == "rev")
input->rev = Hash(value, htSHA1);
else if (name == "revCount") {
uint64_t revCount;
if (!string2Int(value, revCount))
throw Error("path URL '%s' has invalid parameter '%s'", url.to_string(), name);
input->revCount = revCount;
}
else if (name == "lastModified") {
time_t lastModified;
if (!string2Int(value, lastModified))
throw Error("path URL '%s' has invalid parameter '%s'", url.to_string(), name);
input->lastModified = lastModified;
}
else
throw Error("path URL '%s' has unsupported parameter '%s'", url.to_string(), name);
return input;
}
std::unique_ptr<Input> inputFromAttrs(const Attrs & attrs) override
{
if (maybeGetStrAttr(attrs, "type") != "path") return {};
auto input = std::make_unique<PathInput>();
input->path = getStrAttr(attrs, "path");
for (auto & [name, value] : attrs)
if (name == "rev")
input->rev = Hash(getStrAttr(attrs, "rev"), htSHA1);
else if (name == "revCount")
input->revCount = getIntAttr(attrs, "revCount");
else if (name == "lastModified")
input->lastModified = getIntAttr(attrs, "lastModified");
else if (name == "type" || name == "path")
;
else
throw Error("unsupported path input attribute '%s'", name);
return input;
}
}; };
static auto r1 = OnStartup([] { registerInputScheme(std::make_unique<PathInputScheme>()); }); static auto r1 = OnStartup([] { registerInputScheme(std::make_unique<PathInputScheme>()); });

212
src/libfetchers/registry.cc Normal file
View file

@ -0,0 +1,212 @@
#include "registry.hh"
#include "fetchers.hh"
#include "util.hh"
#include "globals.hh"
#include "store-api.hh"
#include <nlohmann/json.hpp>
namespace nix::fetchers {
std::shared_ptr<Registry> Registry::read(
const Path & path, RegistryType type)
{
auto registry = std::make_shared<Registry>(type);
if (!pathExists(path))
return std::make_shared<Registry>(type);
try {
auto json = nlohmann::json::parse(readFile(path));
auto version = json.value("version", 0);
if (version == 2) {
for (auto & i : json["flakes"]) {
auto toAttrs = jsonToAttrs(i["to"]);
Attrs extraAttrs;
auto j = toAttrs.find("dir");
if (j != toAttrs.end()) {
extraAttrs.insert(*j);
toAttrs.erase(j);
}
auto exact = i.find("exact");
registry->entries.push_back(
Entry {
.from = Input::fromAttrs(jsonToAttrs(i["from"])),
.to = Input::fromAttrs(std::move(toAttrs)),
.extraAttrs = extraAttrs,
.exact = exact != i.end() && exact.value()
});
}
}
else
throw Error("flake registry '%s' has unsupported version %d", path, version);
} catch (nlohmann::json::exception & e) {
warn("cannot parse flake registry '%s': %s", path, e.what());
} catch (Error & e) {
warn("cannot read flake registry '%s': %s", path, e.what());
}
return registry;
}
void Registry::write(const Path & path)
{
nlohmann::json arr;
for (auto & entry : entries) {
nlohmann::json obj;
obj["from"] = attrsToJson(entry.from.toAttrs());
obj["to"] = attrsToJson(entry.to.toAttrs());
if (!entry.extraAttrs.empty())
obj["to"].update(attrsToJson(entry.extraAttrs));
if (entry.exact)
obj["exact"] = true;
arr.emplace_back(std::move(obj));
}
nlohmann::json json;
json["version"] = 2;
json["flakes"] = std::move(arr);
createDirs(dirOf(path));
writeFile(path, json.dump(2));
}
void Registry::add(
const Input & from,
const Input & to,
const Attrs & extraAttrs)
{
entries.emplace_back(
Entry {
.from = from,
.to = to,
.extraAttrs = extraAttrs
});
}
void Registry::remove(const Input & input)
{
// FIXME: use C++20 std::erase.
for (auto i = entries.begin(); i != entries.end(); )
if (i->from == input)
i = entries.erase(i);
else
++i;
}
static Path getSystemRegistryPath()
{
return settings.nixConfDir + "/registry.json";
}
static std::shared_ptr<Registry> getSystemRegistry()
{
static auto systemRegistry =
Registry::read(getSystemRegistryPath(), Registry::System);
return systemRegistry;
}
Path getUserRegistryPath()
{
return getHome() + "/.config/nix/registry.json";
}
std::shared_ptr<Registry> getUserRegistry()
{
static auto userRegistry =
Registry::read(getUserRegistryPath(), Registry::User);
return userRegistry;
}
static std::shared_ptr<Registry> flagRegistry =
std::make_shared<Registry>(Registry::Flag);
std::shared_ptr<Registry> getFlagRegistry()
{
return flagRegistry;
}
void overrideRegistry(
const Input & from,
const Input & to,
const Attrs & extraAttrs)
{
flagRegistry->add(from, to, extraAttrs);
}
static std::shared_ptr<Registry> getGlobalRegistry(ref<Store> store)
{
static auto reg = [&]() {
auto path = settings.flakeRegistry.get();
if (!hasPrefix(path, "/")) {
auto storePath = downloadFile(store, path, "flake-registry.json", false).storePath;
if (auto store2 = store.dynamic_pointer_cast<LocalFSStore>())
store2->addPermRoot(storePath, getCacheDir() + "/nix/flake-registry.json", true);
path = store->toRealPath(storePath);
}
return Registry::read(path, Registry::Global);
}();
return reg;
}
Registries getRegistries(ref<Store> store)
{
Registries registries;
registries.push_back(getFlagRegistry());
registries.push_back(getUserRegistry());
registries.push_back(getSystemRegistry());
registries.push_back(getGlobalRegistry(store));
return registries;
}
std::pair<Input, Attrs> lookupInRegistries(
ref<Store> store,
const Input & _input)
{
Attrs extraAttrs;
int n = 0;
Input input(_input);
restart:
n++;
if (n > 100) throw Error("cycle detected in flake registry for '%s'", input.to_string());
for (auto & registry : getRegistries(store)) {
// FIXME: O(n)
for (auto & entry : registry->entries) {
if (entry.exact) {
if (entry.from == input) {
input = entry.to;
extraAttrs = entry.extraAttrs;
goto restart;
}
} else {
if (entry.from.contains(input)) {
input = entry.to.applyOverrides(
!entry.from.getRef() && input.getRef() ? input.getRef() : std::optional<std::string>(),
!entry.from.getRev() && input.getRev() ? input.getRev() : std::optional<Hash>());
extraAttrs = entry.extraAttrs;
goto restart;
}
}
}
}
if (!input.isDirect())
throw Error("cannot find flake '%s' in the flake registries", input.to_string());
debug("looked up '%s' -> '%s'", _input.to_string(), input.to_string());
return {input, extraAttrs};
}
}

View file

@ -0,0 +1,64 @@
#pragma once
#include "types.hh"
#include "fetchers.hh"
namespace nix { class Store; }
namespace nix::fetchers {
struct Registry
{
enum RegistryType {
Flag = 0,
User = 1,
System = 2,
Global = 3,
};
RegistryType type;
struct Entry
{
Input from, to;
Attrs extraAttrs;
bool exact = false;
};
std::vector<Entry> entries;
Registry(RegistryType type)
: type(type)
{ }
static std::shared_ptr<Registry> read(
const Path & path, RegistryType type);
void write(const Path & path);
void add(
const Input & from,
const Input & to,
const Attrs & extraAttrs);
void remove(const Input & input);
};
typedef std::vector<std::shared_ptr<Registry>> Registries;
std::shared_ptr<Registry> getUserRegistry();
Path getUserRegistryPath();
Registries getRegistries(ref<Store> store);
void overrideRegistry(
const Input & from,
const Input & to,
const Attrs & extraAttrs);
std::pair<Input, Attrs> lookupInRegistries(
ref<Store> store,
const Input & input);
}

View file

@ -105,7 +105,7 @@ DownloadFileResult downloadFile(
}; };
} }
Tree downloadTarball( std::pair<Tree, time_t> downloadTarball(
ref<Store> store, ref<Store> store,
const std::string & url, const std::string & url,
const std::string & name, const std::string & name,
@ -120,12 +120,9 @@ Tree downloadTarball(
auto cached = getCache()->lookupExpired(store, inAttrs); auto cached = getCache()->lookupExpired(store, inAttrs);
if (cached && !cached->expired) if (cached && !cached->expired)
return Tree { return {
.actualPath = store->toRealPath(cached->storePath), Tree(store->toRealPath(cached->storePath), std::move(cached->storePath)),
.storePath = std::move(cached->storePath), getIntAttr(cached->infoAttrs, "lastModified")
.info = TreeInfo {
.lastModified = getIntAttr(cached->infoAttrs, "lastModified"),
},
}; };
auto res = downloadFile(store, url, name, immutable); auto res = downloadFile(store, url, name, immutable);
@ -160,117 +157,72 @@ Tree downloadTarball(
*unpackedStorePath, *unpackedStorePath,
immutable); immutable);
return Tree { return {
.actualPath = store->toRealPath(*unpackedStorePath), Tree(store->toRealPath(*unpackedStorePath), std::move(*unpackedStorePath)),
.storePath = std::move(*unpackedStorePath), lastModified,
.info = TreeInfo {
.lastModified = lastModified,
},
}; };
} }
struct TarballInput : Input
{
ParsedURL url;
std::optional<Hash> hash;
TarballInput(const ParsedURL & url) : url(url)
{ }
std::string type() const override { return "tarball"; }
bool operator ==(const Input & other) const override
{
auto other2 = dynamic_cast<const TarballInput *>(&other);
return
other2
&& to_string() == other2->to_string()
&& hash == other2->hash;
}
bool isImmutable() const override
{
return hash || narHash;
}
ParsedURL toURL() const override
{
auto url2(url);
// NAR hashes are preferred over file hashes since tar/zip files
// don't have a canonical representation.
if (narHash)
url2.query.insert_or_assign("narHash", narHash->to_string(SRI, true));
else if (hash)
url2.query.insert_or_assign("hash", hash->to_string(SRI, true));
return url2;
}
Attrs toAttrsInternal() const override
{
Attrs attrs;
attrs.emplace("url", url.to_string());
if (hash)
attrs.emplace("hash", hash->to_string(SRI, true));
return attrs;
}
std::pair<Tree, std::shared_ptr<const Input>> fetchTreeInternal(nix::ref<Store> store) const override
{
auto tree = downloadTarball(store, url.to_string(), "source", false);
auto input = std::make_shared<TarballInput>(*this);
input->narHash = store->queryPathInfo(tree.storePath)->narHash;
return {std::move(tree), input};
}
};
struct TarballInputScheme : InputScheme struct TarballInputScheme : InputScheme
{ {
std::unique_ptr<Input> inputFromURL(const ParsedURL & url) override std::optional<Input> inputFromURL(const ParsedURL & url) override
{ {
if (url.scheme != "file" && url.scheme != "http" && url.scheme != "https") return nullptr; if (url.scheme != "file" && url.scheme != "http" && url.scheme != "https") return {};
if (!hasSuffix(url.path, ".zip") if (!hasSuffix(url.path, ".zip")
&& !hasSuffix(url.path, ".tar") && !hasSuffix(url.path, ".tar")
&& !hasSuffix(url.path, ".tar.gz") && !hasSuffix(url.path, ".tar.gz")
&& !hasSuffix(url.path, ".tar.xz") && !hasSuffix(url.path, ".tar.xz")
&& !hasSuffix(url.path, ".tar.bz2")) && !hasSuffix(url.path, ".tar.bz2"))
return nullptr; return {};
auto input = std::make_unique<TarballInput>(url);
auto hash = input->url.query.find("hash");
if (hash != input->url.query.end()) {
// FIXME: require SRI hash.
input->hash = Hash(hash->second);
input->url.query.erase(hash);
}
auto narHash = input->url.query.find("narHash");
if (narHash != input->url.query.end()) {
// FIXME: require SRI hash.
input->narHash = Hash(narHash->second);
input->url.query.erase(narHash);
}
Input input;
input.attrs.insert_or_assign("type", "tarball");
input.attrs.insert_or_assign("url", url.to_string());
auto narHash = url.query.find("narHash");
if (narHash != url.query.end())
input.attrs.insert_or_assign("narHash", narHash->second);
return input; return input;
} }
std::unique_ptr<Input> inputFromAttrs(const Attrs & attrs) override std::optional<Input> inputFromAttrs(const Attrs & attrs) override
{ {
if (maybeGetStrAttr(attrs, "type") != "tarball") return {}; if (maybeGetStrAttr(attrs, "type") != "tarball") return {};
for (auto & [name, value] : attrs) for (auto & [name, value] : attrs)
if (name != "type" && name != "url" && name != "hash") if (name != "type" && name != "url" && /* name != "hash" && */ name != "narHash")
throw Error("unsupported tarball input attribute '%s'", name); throw Error("unsupported tarball input attribute '%s'", name);
auto input = std::make_unique<TarballInput>(parseURL(getStrAttr(attrs, "url"))); Input input;
if (auto hash = maybeGetStrAttr(attrs, "hash")) input.attrs = attrs;
input->hash = newHashAllowEmpty(*hash, {}); //input.immutable = (bool) maybeGetStrAttr(input.attrs, "hash");
return input; return input;
} }
ParsedURL toURL(const Input & input) override
{
auto url = parseURL(getStrAttr(input.attrs, "url"));
// NAR hashes are preferred over file hashes since tar/zip files
// don't have a canonical representation.
if (auto narHash = input.getNarHash())
url.query.insert_or_assign("narHash", narHash->to_string(SRI, true));
/*
else if (auto hash = maybeGetStrAttr(input.attrs, "hash"))
url.query.insert_or_assign("hash", Hash(*hash).to_string(SRI, true));
*/
return url;
}
bool hasAllInfo(const Input & input) override
{
return true;
}
std::pair<Tree, Input> fetch(ref<Store> store, const Input & input) override
{
auto tree = downloadTarball(store, getStrAttr(input.attrs, "url"), "source", false).first;
return {std::move(tree), input};
}
}; };
static auto r1 = OnStartup([] { registerInputScheme(std::make_unique<TarballInputScheme>()); }); static auto r1 = OnStartup([] { registerInputScheme(std::make_unique<TarballInputScheme>()); });

View file

@ -1,14 +0,0 @@
#include "tree-info.hh"
#include "store-api.hh"
#include <nlohmann/json.hpp>
namespace nix::fetchers {
StorePath TreeInfo::computeStorePath(Store & store) const
{
assert(narHash);
return store.makeFixedOutputPath(FileIngestionMethod::Recursive, narHash, "source");
}
}

View file

@ -1,29 +0,0 @@
#pragma once
#include "path.hh"
#include "hash.hh"
#include <nlohmann/json_fwd.hpp>
namespace nix { class Store; }
namespace nix::fetchers {
struct TreeInfo
{
Hash narHash;
std::optional<uint64_t> revCount;
std::optional<time_t> lastModified;
bool operator ==(const TreeInfo & other) const
{
return
narHash == other.narHash
&& revCount == other.revCount
&& lastModified == other.lastModified;
}
StorePath computeStorePath(Store & store) const;
};
}

View file

@ -34,9 +34,19 @@ MixCommonArgs::MixCommonArgs(const string & programName)
try { try {
globalConfig.set(name, value); globalConfig.set(name, value);
} catch (UsageError & e) { } catch (UsageError & e) {
if (!completions)
warn(e.what()); warn(e.what());
} }
}}, }},
.completer = [](size_t index, std::string_view prefix) {
if (index == 0) {
std::map<std::string, Config::SettingInfo> settings;
globalConfig.getSettings(settings);
for (auto & s : settings)
if (hasPrefix(s.first, prefix))
completions->insert(s.first);
}
}
}); });
addFlag({ addFlag({

View file

@ -1,12 +1,13 @@
#include "loggers.hh" #include "loggers.hh"
#include "progress-bar.hh" #include "progress-bar.hh"
#include "util.hh"
namespace nix { namespace nix {
LogFormat defaultLogFormat = LogFormat::raw; LogFormat defaultLogFormat = LogFormat::raw;
LogFormat parseLogFormat(const std::string & logFormatStr) { LogFormat parseLogFormat(const std::string & logFormatStr) {
if (logFormatStr == "raw") if (logFormatStr == "raw" || getEnv("NIX_GET_COMPLETIONS"))
return LogFormat::raw; return LogFormat::raw;
else if (logFormatStr == "raw-with-logs") else if (logFormatStr == "raw-with-logs")
return LogFormat::rawWithLogs; return LogFormat::rawWithLogs;
@ -26,7 +27,7 @@ Logger * makeDefaultLogger() {
case LogFormat::rawWithLogs: case LogFormat::rawWithLogs:
return makeSimpleLogger(true); return makeSimpleLogger(true);
case LogFormat::internalJson: case LogFormat::internalJson:
return makeJSONLogger(*makeSimpleLogger()); return makeJSONLogger(*makeSimpleLogger(true));
case LogFormat::bar: case LogFormat::bar:
return makeProgressBar(); return makeProgressBar();
case LogFormat::barWithLogs: case LogFormat::barWithLogs:

View file

@ -131,7 +131,7 @@ public:
auto state(state_.lock()); auto state(state_.lock());
std::stringstream oss; std::stringstream oss;
oss << ei; showErrorInfo(oss, ei, loggerSettings.showTrace.get());
log(*state, ei.level, oss.str()); log(*state, ei.level, oss.str());
} }

View file

@ -36,7 +36,7 @@ void printGCWarning()
void printMissing(ref<Store> store, const std::vector<StorePathWithOutputs> & paths, Verbosity lvl) void printMissing(ref<Store> store, const std::vector<StorePathWithOutputs> & paths, Verbosity lvl)
{ {
unsigned long long downloadSize, narSize; uint64_t downloadSize, narSize;
StorePathSet willBuild, willSubstitute, unknown; StorePathSet willBuild, willSubstitute, unknown;
store->queryMissing(paths, willBuild, willSubstitute, unknown, downloadSize, narSize); store->queryMissing(paths, willBuild, willSubstitute, unknown, downloadSize, narSize);
printMissing(store, willBuild, willSubstitute, unknown, downloadSize, narSize, lvl); printMissing(store, willBuild, willSubstitute, unknown, downloadSize, narSize, lvl);
@ -45,7 +45,7 @@ void printMissing(ref<Store> store, const std::vector<StorePathWithOutputs> & pa
void printMissing(ref<Store> store, const StorePathSet & willBuild, void printMissing(ref<Store> store, const StorePathSet & willBuild,
const StorePathSet & willSubstitute, const StorePathSet & unknown, const StorePathSet & willSubstitute, const StorePathSet & unknown,
unsigned long long downloadSize, unsigned long long narSize, Verbosity lvl) uint64_t downloadSize, uint64_t narSize, Verbosity lvl)
{ {
if (!willBuild.empty()) { if (!willBuild.empty()) {
if (willBuild.size() == 1) if (willBuild.size() == 1)
@ -323,10 +323,8 @@ int handleExceptions(const string & programName, std::function<void()> fun)
printError("Try '%1% --help' for more information.", programName); printError("Try '%1% --help' for more information.", programName);
return 1; return 1;
} catch (BaseError & e) { } catch (BaseError & e) {
if (settings.showTrace && e.prefix() != "")
printError(e.prefix());
logError(e.info()); logError(e.info());
if (e.prefix() != "" && !settings.showTrace) if (e.hasTrace() && !loggerSettings.showTrace.get())
printError("(use '--show-trace' to show detailed location information)"); printError("(use '--show-trace' to show detailed location information)");
return e.status; return e.status;
} catch (std::bad_alloc & e) { } catch (std::bad_alloc & e) {
@ -386,7 +384,7 @@ RunPager::~RunPager()
} }
string showBytes(unsigned long long bytes) string showBytes(uint64_t bytes)
{ {
return (format("%.2f MiB") % (bytes / (1024.0 * 1024.0))).str(); return (format("%.2f MiB") % (bytes / (1024.0 * 1024.0))).str();
} }

View file

@ -47,7 +47,7 @@ void printMissing(
void printMissing(ref<Store> store, const StorePathSet & willBuild, void printMissing(ref<Store> store, const StorePathSet & willBuild,
const StorePathSet & willSubstitute, const StorePathSet & unknown, const StorePathSet & willSubstitute, const StorePathSet & unknown,
unsigned long long downloadSize, unsigned long long narSize, Verbosity lvl = lvlInfo); uint64_t downloadSize, uint64_t narSize, Verbosity lvl = lvlInfo);
string getArg(const string & opt, string getArg(const string & opt,
Strings::iterator & i, const Strings::iterator & end); Strings::iterator & i, const Strings::iterator & end);
@ -110,7 +110,7 @@ extern volatile ::sig_atomic_t blockInt;
/* GC helpers. */ /* GC helpers. */
string showBytes(unsigned long long bytes); string showBytes(uint64_t bytes);
struct GCResults; struct GCResults;

View file

@ -15,6 +15,7 @@
#include <chrono> #include <chrono>
#include <future> #include <future>
#include <regex> #include <regex>
#include <fstream>
#include <nlohmann/json.hpp> #include <nlohmann/json.hpp>
@ -57,6 +58,13 @@ void BinaryCacheStore::init()
} }
} }
void BinaryCacheStore::upsertFile(const std::string & path,
std::string && data,
const std::string & mimeType)
{
upsertFile(path, std::make_shared<std::stringstream>(std::move(data)), mimeType);
}
void BinaryCacheStore::getFile(const std::string & path, void BinaryCacheStore::getFile(const std::string & path,
Callback<std::shared_ptr<std::string>> callback) noexcept Callback<std::shared_ptr<std::string>> callback) noexcept
{ {
@ -113,13 +121,74 @@ void BinaryCacheStore::writeNarInfo(ref<NarInfo> narInfo)
diskCache->upsertNarInfo(getUri(), hashPart, std::shared_ptr<NarInfo>(narInfo)); diskCache->upsertNarInfo(getUri(), hashPart, std::shared_ptr<NarInfo>(narInfo));
} }
void BinaryCacheStore::addToStore(const ValidPathInfo & info, Source & narSource, AutoCloseFD openFile(const Path & path)
RepairFlag repair, CheckSigsFlag checkSigs, std::shared_ptr<FSAccessor> accessor)
{ {
// FIXME: See if we can use the original source to reduce memory usage. auto fd = open(path.c_str(), O_RDONLY | O_CLOEXEC);
auto nar = make_ref<std::string>(narSource.drain()); if (!fd)
throw SysError("opening file '%1%'", path);
return fd;
}
if (!repair && isValidPath(info.path)) return; struct FileSource : FdSource
{
AutoCloseFD fd2;
FileSource(const Path & path)
: fd2(openFile(path))
{
fd = fd2.get();
}
};
void BinaryCacheStore::addToStore(const ValidPathInfo & info, Source & narSource,
RepairFlag repair, CheckSigsFlag checkSigs)
{
assert(info.narHash && info.narSize);
if (!repair && isValidPath(info.path)) {
// FIXME: copyNAR -> null sink
narSource.drain();
return;
}
auto [fdTemp, fnTemp] = createTempFile();
auto now1 = std::chrono::steady_clock::now();
/* Read the NAR simultaneously into a CompressionSink+FileSink (to
write the compressed NAR to disk), into a HashSink (to get the
NAR hash), and into a NarAccessor (to get the NAR listing). */
HashSink fileHashSink(htSHA256);
std::shared_ptr<FSAccessor> narAccessor;
{
FdSink fileSink(fdTemp.get());
TeeSink teeSink(fileSink, fileHashSink);
auto compressionSink = makeCompressionSink(compression, teeSink);
TeeSource teeSource(narSource, *compressionSink);
narAccessor = makeNarAccessor(teeSource);
compressionSink->finish();
}
auto now2 = std::chrono::steady_clock::now();
auto narInfo = make_ref<NarInfo>(info);
narInfo->narSize = info.narSize;
narInfo->narHash = info.narHash;
narInfo->compression = compression;
auto [fileHash, fileSize] = fileHashSink.finish();
narInfo->fileHash = fileHash;
narInfo->fileSize = fileSize;
narInfo->url = "nar/" + narInfo->fileHash->to_string(Base32, false) + ".nar"
+ (compression == "xz" ? ".xz" :
compression == "bzip2" ? ".bz2" :
compression == "br" ? ".br" :
"");
auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(now2 - now1).count();
printMsg(lvlTalkative, "copying path '%1%' (%2% bytes, compressed %3$.1f%% in %4% ms) to binary cache",
printStorePath(narInfo->path), info.narSize,
((1.0 - (double) fileSize / info.narSize) * 100.0),
duration);
/* Verify that all references are valid. This may do some .narinfo /* Verify that all references are valid. This may do some .narinfo
reads, but typically they'll already be cached. */ reads, but typically they'll already be cached. */
@ -132,23 +201,6 @@ void BinaryCacheStore::addToStore(const ValidPathInfo & info, Source & narSource
printStorePath(info.path), printStorePath(ref)); printStorePath(info.path), printStorePath(ref));
} }
assert(nar->compare(0, narMagic.size(), narMagic) == 0);
auto narInfo = make_ref<NarInfo>(info);
narInfo->narSize = nar->size();
narInfo->narHash = hashString(htSHA256, *nar);
if (info.narHash && info.narHash != narInfo->narHash)
throw Error("refusing to copy corrupted path '%1%' to binary cache", printStorePath(info.path));
auto accessor_ = std::dynamic_pointer_cast<RemoteFSAccessor>(accessor);
auto narAccessor = makeNarAccessor(nar);
if (accessor_)
accessor_->addToCache(printStorePath(info.path), *nar, narAccessor);
/* Optionally write a JSON file containing a listing of the /* Optionally write a JSON file containing a listing of the
contents of the NAR. */ contents of the NAR. */
if (writeNARListing) { if (writeNARListing) {
@ -160,33 +212,13 @@ void BinaryCacheStore::addToStore(const ValidPathInfo & info, Source & narSource
{ {
auto res = jsonRoot.placeholder("root"); auto res = jsonRoot.placeholder("root");
listNar(res, narAccessor, "", true); listNar(res, ref<FSAccessor>(narAccessor), "", true);
} }
} }
upsertFile(std::string(info.path.to_string()) + ".ls", jsonOut.str(), "application/json"); upsertFile(std::string(info.path.to_string()) + ".ls", jsonOut.str(), "application/json");
} }
/* Compress the NAR. */
narInfo->compression = compression;
auto now1 = std::chrono::steady_clock::now();
auto narCompressed = compress(compression, *nar, parallelCompression);
auto now2 = std::chrono::steady_clock::now();
narInfo->fileHash = hashString(htSHA256, *narCompressed);
narInfo->fileSize = narCompressed->size();
auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(now2 - now1).count();
printMsg(lvlTalkative, "copying path '%1%' (%2% bytes, compressed %3$.1f%% in %4% ms) to binary cache",
printStorePath(narInfo->path), narInfo->narSize,
((1.0 - (double) narCompressed->size() / nar->size()) * 100.0),
duration);
narInfo->url = "nar/" + narInfo->fileHash.to_string(Base32, false) + ".nar"
+ (compression == "xz" ? ".xz" :
compression == "bzip2" ? ".bz2" :
compression == "br" ? ".br" :
"");
/* Optionally maintain an index of DWARF debug info files /* Optionally maintain an index of DWARF debug info files
consisting of JSON files named 'debuginfo/<build-id>' that consisting of JSON files named 'debuginfo/<build-id>' that
specify the NAR file and member containing the debug info. */ specify the NAR file and member containing the debug info. */
@ -247,12 +279,14 @@ void BinaryCacheStore::addToStore(const ValidPathInfo & info, Source & narSource
/* Atomically write the NAR file. */ /* Atomically write the NAR file. */
if (repair || !fileExists(narInfo->url)) { if (repair || !fileExists(narInfo->url)) {
stats.narWrite++; stats.narWrite++;
upsertFile(narInfo->url, *narCompressed, "application/x-nix-nar"); upsertFile(narInfo->url,
std::make_shared<std::fstream>(fnTemp, std::ios_base::in),
"application/x-nix-nar");
} else } else
stats.narWriteAverted++; stats.narWriteAverted++;
stats.narWriteBytes += nar->size(); stats.narWriteBytes += info.narSize;
stats.narWriteCompressedBytes += narCompressed->size(); stats.narWriteCompressedBytes += fileSize;
stats.narWriteCompressionTimeMs += duration; stats.narWriteCompressionTimeMs += duration;
/* Atomically write the NAR info file.*/ /* Atomically write the NAR info file.*/
@ -338,7 +372,7 @@ StorePath BinaryCacheStore::addToStore(const string & name, const Path & srcPath
method for very large paths, but `copyPath' is mainly used for method for very large paths, but `copyPath' is mainly used for
small files. */ small files. */
StringSink sink; StringSink sink;
Hash h; std::optional<Hash> h;
if (method == FileIngestionMethod::Recursive) { if (method == FileIngestionMethod::Recursive) {
dumpPath(srcPath, sink, filter); dumpPath(srcPath, sink, filter);
h = hashString(hashAlgo, *sink.s); h = hashString(hashAlgo, *sink.s);
@ -348,10 +382,10 @@ StorePath BinaryCacheStore::addToStore(const string & name, const Path & srcPath
h = hashString(hashAlgo, s); h = hashString(hashAlgo, s);
} }
ValidPathInfo info(makeFixedOutputPath(method, h, name)); ValidPathInfo info(makeFixedOutputPath(method, *h, name));
auto source = StringSource { *sink.s }; auto source = StringSource { *sink.s };
addToStore(info, source, repair, CheckSigs, nullptr); addToStore(info, source, repair, CheckSigs);
return std::move(info.path); return std::move(info.path);
} }
@ -366,7 +400,7 @@ StorePath BinaryCacheStore::addTextToStore(const string & name, const string & s
StringSink sink; StringSink sink;
dumpString(s, sink); dumpString(s, sink);
auto source = StringSource { *sink.s }; auto source = StringSource { *sink.s };
addToStore(info, source, repair, CheckSigs, nullptr); addToStore(info, source, repair, CheckSigs);
} }
return std::move(info.path); return std::move(info.path);

View file

@ -36,9 +36,13 @@ public:
virtual bool fileExists(const std::string & path) = 0; virtual bool fileExists(const std::string & path) = 0;
virtual void upsertFile(const std::string & path, virtual void upsertFile(const std::string & path,
const std::string & data, std::shared_ptr<std::basic_iostream<char>> istream,
const std::string & mimeType) = 0; const std::string & mimeType) = 0;
void upsertFile(const std::string & path,
std::string && data,
const std::string & mimeType);
/* Note: subclasses must implement at least one of the two /* Note: subclasses must implement at least one of the two
following getFile() methods. */ following getFile() methods. */
@ -75,8 +79,7 @@ public:
{ unsupported("queryPathFromHashPart"); } { unsupported("queryPathFromHashPart"); }
void addToStore(const ValidPathInfo & info, Source & narSource, void addToStore(const ValidPathInfo & info, Source & narSource,
RepairFlag repair, CheckSigsFlag checkSigs, RepairFlag repair, CheckSigsFlag checkSigs) override;
std::shared_ptr<FSAccessor> accessor) override;
StorePath addToStore(const string & name, const Path & srcPath, StorePath addToStore(const string & name, const Path & srcPath,
FileIngestionMethod method, HashType hashAlgo, FileIngestionMethod method, HashType hashAlgo,

View file

@ -1047,7 +1047,7 @@ DerivationGoal::DerivationGoal(const StorePath & drvPath, const BasicDerivation
{ {
this->drv = std::make_unique<BasicDerivation>(BasicDerivation(drv)); this->drv = std::make_unique<BasicDerivation>(BasicDerivation(drv));
state = &DerivationGoal::haveDerivation; state = &DerivationGoal::haveDerivation;
name = fmt("building of %s", worker.store.showPaths(drv.outputPaths())); name = fmt("building of %s", worker.store.showPaths(drv.outputPaths(worker.store)));
trace("created"); trace("created");
mcExpectedBuilds = std::make_unique<MaintainCount<uint64_t>>(worker.expectedBuilds); mcExpectedBuilds = std::make_unique<MaintainCount<uint64_t>>(worker.expectedBuilds);
@ -1182,7 +1182,7 @@ void DerivationGoal::haveDerivation()
retrySubstitution = false; retrySubstitution = false;
for (auto & i : drv->outputs) for (auto & i : drv->outputs)
worker.store.addTempRoot(i.second.path); worker.store.addTempRoot(i.second.path(worker.store, drv->name));
/* Check what outputs paths are not already valid. */ /* Check what outputs paths are not already valid. */
auto invalidOutputs = checkPathValidity(false, buildMode == bmRepair); auto invalidOutputs = checkPathValidity(false, buildMode == bmRepair);
@ -1290,12 +1290,12 @@ void DerivationGoal::repairClosure()
StorePathSet outputClosure; StorePathSet outputClosure;
for (auto & i : drv->outputs) { for (auto & i : drv->outputs) {
if (!wantOutput(i.first, wantedOutputs)) continue; if (!wantOutput(i.first, wantedOutputs)) continue;
worker.store.computeFSClosure(i.second.path, outputClosure); worker.store.computeFSClosure(i.second.path(worker.store, drv->name), outputClosure);
} }
/* Filter out our own outputs (which we have already checked). */ /* Filter out our own outputs (which we have already checked). */
for (auto & i : drv->outputs) for (auto & i : drv->outputs)
outputClosure.erase(i.second.path); outputClosure.erase(i.second.path(worker.store, drv->name));
/* Get all dependencies of this derivation so that we know which /* Get all dependencies of this derivation so that we know which
derivation is responsible for which path in the output derivation is responsible for which path in the output
@ -1307,7 +1307,7 @@ void DerivationGoal::repairClosure()
if (i.isDerivation()) { if (i.isDerivation()) {
Derivation drv = worker.store.derivationFromPath(i); Derivation drv = worker.store.derivationFromPath(i);
for (auto & j : drv.outputs) for (auto & j : drv.outputs)
outputsToDrv.insert_or_assign(j.second.path, i); outputsToDrv.insert_or_assign(j.second.path(worker.store, drv.name), i);
} }
/* Check each path (slow!). */ /* Check each path (slow!). */
@ -1379,7 +1379,7 @@ void DerivationGoal::inputsRealised()
for (auto & j : i.second) { for (auto & j : i.second) {
auto k = inDrv.outputs.find(j); auto k = inDrv.outputs.find(j);
if (k != inDrv.outputs.end()) if (k != inDrv.outputs.end())
worker.store.computeFSClosure(k->second.path, inputPaths); worker.store.computeFSClosure(k->second.path(worker.store, inDrv.name), inputPaths);
else else
throw Error( throw Error(
"derivation '%s' requires non-existent output '%s' from input derivation '%s'", "derivation '%s' requires non-existent output '%s' from input derivation '%s'",
@ -1432,7 +1432,7 @@ void DerivationGoal::tryToBuild()
goal can start a build, and if not, the main loop will sleep a goal can start a build, and if not, the main loop will sleep a
few seconds and then retry this goal. */ few seconds and then retry this goal. */
PathSet lockFiles; PathSet lockFiles;
for (auto & outPath : drv->outputPaths()) for (auto & outPath : drv->outputPaths(worker.store))
lockFiles.insert(worker.store.Store::toRealPath(outPath)); lockFiles.insert(worker.store.Store::toRealPath(outPath));
if (!outputLocks.lockPaths(lockFiles, "", false)) { if (!outputLocks.lockPaths(lockFiles, "", false)) {
@ -1460,16 +1460,16 @@ void DerivationGoal::tryToBuild()
return; return;
} }
missingPaths = drv->outputPaths(); missingPaths = drv->outputPaths(worker.store);
if (buildMode != bmCheck) if (buildMode != bmCheck)
for (auto & i : validPaths) missingPaths.erase(i); for (auto & i : validPaths) missingPaths.erase(i);
/* If any of the outputs already exist but are not valid, delete /* If any of the outputs already exist but are not valid, delete
them. */ them. */
for (auto & i : drv->outputs) { for (auto & i : drv->outputs) {
if (worker.store.isValidPath(i.second.path)) continue; if (worker.store.isValidPath(i.second.path(worker.store, drv->name))) continue;
debug("removing invalid path '%s'", worker.store.printStorePath(i.second.path)); debug("removing invalid path '%s'", worker.store.printStorePath(i.second.path(worker.store, drv->name)));
deletePath(worker.store.Store::toRealPath(i.second.path)); deletePath(worker.store.Store::toRealPath(i.second.path(worker.store, drv->name)));
} }
/* Don't do a remote build if the derivation has the attribute /* Don't do a remote build if the derivation has the attribute
@ -1646,13 +1646,13 @@ void DerivationGoal::buildDone()
So instead, check if the disk is (nearly) full now. If So instead, check if the disk is (nearly) full now. If
so, we don't mark this build as a permanent failure. */ so, we don't mark this build as a permanent failure. */
#if HAVE_STATVFS #if HAVE_STATVFS
unsigned long long required = 8ULL * 1024 * 1024; // FIXME: make configurable uint64_t required = 8ULL * 1024 * 1024; // FIXME: make configurable
struct statvfs st; struct statvfs st;
if (statvfs(worker.store.realStoreDir.c_str(), &st) == 0 && if (statvfs(worker.store.realStoreDir.c_str(), &st) == 0 &&
(unsigned long long) st.f_bavail * st.f_bsize < required) (uint64_t) st.f_bavail * st.f_bsize < required)
diskFull = true; diskFull = true;
if (statvfs(tmpDir.c_str(), &st) == 0 && if (statvfs(tmpDir.c_str(), &st) == 0 &&
(unsigned long long) st.f_bavail * st.f_bsize < required) (uint64_t) st.f_bavail * st.f_bsize < required)
diskFull = true; diskFull = true;
#endif #endif
@ -1692,7 +1692,7 @@ void DerivationGoal::buildDone()
fmt("running post-build-hook '%s'", settings.postBuildHook), fmt("running post-build-hook '%s'", settings.postBuildHook),
Logger::Fields{worker.store.printStorePath(drvPath)}); Logger::Fields{worker.store.printStorePath(drvPath)});
PushActivity pact(act.id); PushActivity pact(act.id);
auto outputPaths = drv->outputPaths(); auto outputPaths = drv->outputPaths(worker.store);
std::map<std::string, std::string> hookEnvironment = getEnv(); std::map<std::string, std::string> hookEnvironment = getEnv();
hookEnvironment.emplace("DRV_PATH", worker.store.printStorePath(drvPath)); hookEnvironment.emplace("DRV_PATH", worker.store.printStorePath(drvPath));
@ -1920,7 +1920,7 @@ StorePathSet DerivationGoal::exportReferences(const StorePathSet & storePaths)
if (j.isDerivation()) { if (j.isDerivation()) {
Derivation drv = worker.store.derivationFromPath(j); Derivation drv = worker.store.derivationFromPath(j);
for (auto & k : drv.outputs) for (auto & k : drv.outputs)
worker.store.computeFSClosure(k.second.path, paths); worker.store.computeFSClosure(k.second.path(worker.store, drv.name), paths);
} }
} }
@ -2015,7 +2015,7 @@ void DerivationGoal::startBuilder()
/* Substitute output placeholders with the actual output paths. */ /* Substitute output placeholders with the actual output paths. */
for (auto & output : drv->outputs) for (auto & output : drv->outputs)
inputRewrites[hashPlaceholder(output.first)] = worker.store.printStorePath(output.second.path); inputRewrites[hashPlaceholder(output.first)] = worker.store.printStorePath(output.second.path(worker.store, drv->name));
/* Construct the environment passed to the builder. */ /* Construct the environment passed to the builder. */
initEnv(); initEnv();
@ -2041,7 +2041,10 @@ void DerivationGoal::startBuilder()
if (!std::regex_match(fileName, regex)) if (!std::regex_match(fileName, regex))
throw Error("invalid file name '%s' in 'exportReferencesGraph'", fileName); throw Error("invalid file name '%s' in 'exportReferencesGraph'", fileName);
auto storePath = worker.store.parseStorePath(*i++); auto storePathS = *i++;
if (!worker.store.isInStore(storePathS))
throw BuildError("'exportReferencesGraph' contains a non-store path '%1%'", storePathS);
auto storePath = worker.store.toStorePath(storePathS).first;
/* Write closure info to <fileName>. */ /* Write closure info to <fileName>. */
writeFile(tmpDir + "/" + fileName, writeFile(tmpDir + "/" + fileName,
@ -2080,7 +2083,7 @@ void DerivationGoal::startBuilder()
for (auto & i : dirsInChroot) for (auto & i : dirsInChroot)
try { try {
if (worker.store.isInStore(i.second.source)) if (worker.store.isInStore(i.second.source))
worker.store.computeFSClosure(worker.store.parseStorePath(worker.store.toStorePath(i.second.source)), closure); worker.store.computeFSClosure(worker.store.toStorePath(i.second.source).first, closure);
} catch (InvalidPath & e) { } catch (InvalidPath & e) {
} catch (Error & e) { } catch (Error & e) {
throw Error("while processing 'sandbox-paths': %s", e.what()); throw Error("while processing 'sandbox-paths': %s", e.what());
@ -2197,7 +2200,7 @@ void DerivationGoal::startBuilder()
(typically the dependencies of /bin/sh). Throw them (typically the dependencies of /bin/sh). Throw them
out. */ out. */
for (auto & i : drv->outputs) for (auto & i : drv->outputs)
dirsInChroot.erase(worker.store.printStorePath(i.second.path)); dirsInChroot.erase(worker.store.printStorePath(i.second.path(worker.store, drv->name)));
#elif __APPLE__ #elif __APPLE__
/* We don't really have any parent prep work to do (yet?) /* We don't really have any parent prep work to do (yet?)
@ -2610,7 +2613,7 @@ void DerivationGoal::writeStructuredAttrs()
/* Add an "outputs" object containing the output paths. */ /* Add an "outputs" object containing the output paths. */
nlohmann::json outputs; nlohmann::json outputs;
for (auto & i : drv->outputs) for (auto & i : drv->outputs)
outputs[i.first] = rewriteStrings(worker.store.printStorePath(i.second.path), inputRewrites); outputs[i.first] = rewriteStrings(worker.store.printStorePath(i.second.path(worker.store, drv->name)), inputRewrites);
json["outputs"] = outputs; json["outputs"] = outputs;
/* Handle exportReferencesGraph. */ /* Handle exportReferencesGraph. */
@ -2753,8 +2756,8 @@ struct RestrictedStore : public LocalFSStore
void queryReferrers(const StorePath & path, StorePathSet & referrers) override void queryReferrers(const StorePath & path, StorePathSet & referrers) override
{ } { }
StorePathSet queryDerivationOutputs(const StorePath & path) override OutputPathMap queryDerivationOutputMap(const StorePath & path) override
{ throw Error("queryDerivationOutputs"); } { throw Error("queryDerivationOutputMap"); }
std::optional<StorePath> queryPathFromHashPart(const std::string & hashPart) override std::optional<StorePath> queryPathFromHashPart(const std::string & hashPart) override
{ throw Error("queryPathFromHashPart"); } { throw Error("queryPathFromHashPart"); }
@ -2765,14 +2768,13 @@ struct RestrictedStore : public LocalFSStore
{ throw Error("addToStore"); } { throw Error("addToStore"); }
void addToStore(const ValidPathInfo & info, Source & narSource, void addToStore(const ValidPathInfo & info, Source & narSource,
RepairFlag repair = NoRepair, CheckSigsFlag checkSigs = CheckSigs, RepairFlag repair = NoRepair, CheckSigsFlag checkSigs = CheckSigs) override
std::shared_ptr<FSAccessor> accessor = 0) override
{ {
next->addToStore(info, narSource, repair, checkSigs, accessor); next->addToStore(info, narSource, repair, checkSigs);
goal.addDependency(info.path); goal.addDependency(info.path);
} }
StorePath addToStoreFromDump(const string & dump, const string & name, StorePath addToStoreFromDump(Source & dump, const string & name,
FileIngestionMethod method = FileIngestionMethod::Recursive, HashType hashAlgo = htSHA256, RepairFlag repair = NoRepair) override FileIngestionMethod method = FileIngestionMethod::Recursive, HashType hashAlgo = htSHA256, RepairFlag repair = NoRepair) override
{ {
auto path = next->addToStoreFromDump(dump, name, method, hashAlgo, repair); auto path = next->addToStoreFromDump(dump, name, method, hashAlgo, repair);
@ -2815,7 +2817,7 @@ struct RestrictedStore : public LocalFSStore
auto drv = derivationFromPath(path.path); auto drv = derivationFromPath(path.path);
for (auto & output : drv.outputs) for (auto & output : drv.outputs)
if (wantOutput(output.first, path.outputs)) if (wantOutput(output.first, path.outputs))
newPaths.insert(output.second.path); newPaths.insert(output.second.path(*this, drv.name));
} else if (!goal.isAllowed(path.path)) } else if (!goal.isAllowed(path.path))
throw InvalidPath("cannot build unknown path '%s' in recursive Nix", printStorePath(path.path)); throw InvalidPath("cannot build unknown path '%s' in recursive Nix", printStorePath(path.path));
} }
@ -2849,7 +2851,7 @@ struct RestrictedStore : public LocalFSStore
void queryMissing(const std::vector<StorePathWithOutputs> & targets, void queryMissing(const std::vector<StorePathWithOutputs> & targets,
StorePathSet & willBuild, StorePathSet & willSubstitute, StorePathSet & unknown, StorePathSet & willBuild, StorePathSet & willSubstitute, StorePathSet & unknown,
unsigned long long & downloadSize, unsigned long long & narSize) override uint64_t & downloadSize, uint64_t & narSize) override
{ {
/* This is slightly impure since it leaks information to the /* This is slightly impure since it leaks information to the
client about what paths will be built/substituted or are client about what paths will be built/substituted or are
@ -3577,7 +3579,7 @@ StorePathSet parseReferenceSpecifiers(Store & store, const BasicDerivation & drv
if (store.isStorePath(i)) if (store.isStorePath(i))
result.insert(store.parseStorePath(i)); result.insert(store.parseStorePath(i));
else if (drv.outputs.count(i)) else if (drv.outputs.count(i))
result.insert(drv.outputs.find(i)->second.path); result.insert(drv.outputs.find(i)->second.path(store, drv.name));
else throw BuildError("derivation contains an illegal reference specifier '%s'", i); else throw BuildError("derivation contains an illegal reference specifier '%s'", i);
} }
return result; return result;
@ -3615,7 +3617,7 @@ void DerivationGoal::registerOutputs()
if (hook) { if (hook) {
bool allValid = true; bool allValid = true;
for (auto & i : drv->outputs) for (auto & i : drv->outputs)
if (!worker.store.isValidPath(i.second.path)) allValid = false; if (!worker.store.isValidPath(i.second.path(worker.store, drv->name))) allValid = false;
if (allValid) return; if (allValid) return;
} }
@ -3636,23 +3638,23 @@ void DerivationGoal::registerOutputs()
Nix calls. */ Nix calls. */
StorePathSet referenceablePaths; StorePathSet referenceablePaths;
for (auto & p : inputPaths) referenceablePaths.insert(p); for (auto & p : inputPaths) referenceablePaths.insert(p);
for (auto & i : drv->outputs) referenceablePaths.insert(i.second.path); for (auto & i : drv->outputs) referenceablePaths.insert(i.second.path(worker.store, drv->name));
for (auto & p : addedPaths) referenceablePaths.insert(p); for (auto & p : addedPaths) referenceablePaths.insert(p);
/* Check whether the output paths were created, and grep each /* Check whether the output paths were created, and grep each
output path to determine what other paths it references. Also make all output path to determine what other paths it references. Also make all
output paths read-only. */ output paths read-only. */
for (auto & i : drv->outputs) { for (auto & i : drv->outputs) {
auto path = worker.store.printStorePath(i.second.path); auto path = worker.store.printStorePath(i.second.path(worker.store, drv->name));
if (!missingPaths.count(i.second.path)) continue; if (!missingPaths.count(i.second.path(worker.store, drv->name))) continue;
Path actualPath = path; Path actualPath = path;
if (needsHashRewrite()) { if (needsHashRewrite()) {
auto r = redirectedOutputs.find(i.second.path); auto r = redirectedOutputs.find(i.second.path(worker.store, drv->name));
if (r != redirectedOutputs.end()) { if (r != redirectedOutputs.end()) {
auto redirected = worker.store.Store::toRealPath(r->second); auto redirected = worker.store.Store::toRealPath(r->second);
if (buildMode == bmRepair if (buildMode == bmRepair
&& redirectedBadOutputs.count(i.second.path) && redirectedBadOutputs.count(i.second.path(worker.store, drv->name))
&& pathExists(redirected)) && pathExists(redirected))
replaceValidPath(path, redirected); replaceValidPath(path, redirected);
if (buildMode == bmCheck) if (buildMode == bmCheck)
@ -3721,7 +3723,9 @@ void DerivationGoal::registerOutputs()
if (fixedOutput) { if (fixedOutput) {
if (i.second.hash->method == FileIngestionMethod::Flat) { FixedOutputHash outputHash = std::get<DerivationOutputFixed>(i.second.output).hash;
if (outputHash.method == FileIngestionMethod::Flat) {
/* The output path should be a regular file without execute permission. */ /* The output path should be a regular file without execute permission. */
if (!S_ISREG(st.st_mode) || (st.st_mode & S_IXUSR) != 0) if (!S_ISREG(st.st_mode) || (st.st_mode & S_IXUSR) != 0)
throw BuildError( throw BuildError(
@ -3732,13 +3736,13 @@ void DerivationGoal::registerOutputs()
/* Check the hash. In hash mode, move the path produced by /* Check the hash. In hash mode, move the path produced by
the derivation to its content-addressed location. */ the derivation to its content-addressed location. */
Hash h2 = i.second.hash->method == FileIngestionMethod::Recursive Hash h2 = outputHash.method == FileIngestionMethod::Recursive
? hashPath(*i.second.hash->hash.type, actualPath).first ? hashPath(outputHash.hash.type, actualPath).first
: hashFile(*i.second.hash->hash.type, actualPath); : hashFile(outputHash.hash.type, actualPath);
auto dest = worker.store.makeFixedOutputPath(i.second.hash->method, h2, i.second.path.name()); auto dest = worker.store.makeFixedOutputPath(outputHash.method, h2, i.second.path(worker.store, drv->name).name());
if (i.second.hash->hash != h2) { if (outputHash.hash != h2) {
/* Throw an error after registering the path as /* Throw an error after registering the path as
valid. */ valid. */
@ -3746,7 +3750,7 @@ void DerivationGoal::registerOutputs()
delayedException = std::make_exception_ptr( delayedException = std::make_exception_ptr(
BuildError("hash mismatch in fixed-output derivation '%s':\n wanted: %s\n got: %s", BuildError("hash mismatch in fixed-output derivation '%s':\n wanted: %s\n got: %s",
worker.store.printStorePath(dest), worker.store.printStorePath(dest),
i.second.hash->hash.to_string(SRI, true), outputHash.hash.to_string(SRI, true),
h2.to_string(SRI, true))); h2.to_string(SRI, true)));
Path actualDest = worker.store.Store::toRealPath(dest); Path actualDest = worker.store.Store::toRealPath(dest);
@ -3768,7 +3772,7 @@ void DerivationGoal::registerOutputs()
assert(worker.store.parseStorePath(path) == dest); assert(worker.store.parseStorePath(path) == dest);
ca = FixedOutputHash { ca = FixedOutputHash {
.method = i.second.hash->method, .method = outputHash.method,
.hash = h2, .hash = h2,
}; };
} }
@ -3783,8 +3787,10 @@ void DerivationGoal::registerOutputs()
time. The hash is stored in the database so that we can time. The hash is stored in the database so that we can
verify later on whether nobody has messed with the store. */ verify later on whether nobody has messed with the store. */
debug("scanning for references inside '%1%'", path); debug("scanning for references inside '%1%'", path);
HashResult hash; // HashResult hash;
auto references = worker.store.parseStorePathSet(scanForReferences(actualPath, worker.store.printStorePathSet(referenceablePaths), hash)); auto pathSetAndHash = scanForReferences(actualPath, worker.store.printStorePathSet(referenceablePaths));
auto references = worker.store.parseStorePathSet(pathSetAndHash.first);
HashResult hash = pathSetAndHash.second;
if (buildMode == bmCheck) { if (buildMode == bmCheck) {
if (!worker.store.isValidPath(worker.store.parseStorePath(path))) continue; if (!worker.store.isValidPath(worker.store.parseStorePath(path))) continue;
@ -3892,7 +3898,7 @@ void DerivationGoal::registerOutputs()
/* If this is the first round of several, then move the output out of the way. */ /* If this is the first round of several, then move the output out of the way. */
if (nrRounds > 1 && curRound == 1 && curRound < nrRounds && keepPreviousRound) { if (nrRounds > 1 && curRound == 1 && curRound < nrRounds && keepPreviousRound) {
for (auto & i : drv->outputs) { for (auto & i : drv->outputs) {
auto path = worker.store.printStorePath(i.second.path); auto path = worker.store.printStorePath(i.second.path(worker.store, drv->name));
Path prev = path + checkSuffix; Path prev = path + checkSuffix;
deletePath(prev); deletePath(prev);
Path dst = path + checkSuffix; Path dst = path + checkSuffix;
@ -3910,7 +3916,7 @@ void DerivationGoal::registerOutputs()
if the result was not determistic? */ if the result was not determistic? */
if (curRound == nrRounds) { if (curRound == nrRounds) {
for (auto & i : drv->outputs) { for (auto & i : drv->outputs) {
Path prev = worker.store.printStorePath(i.second.path) + checkSuffix; Path prev = worker.store.printStorePath(i.second.path(worker.store, drv->name)) + checkSuffix;
deletePath(prev); deletePath(prev);
} }
} }
@ -4211,9 +4217,9 @@ StorePathSet DerivationGoal::checkPathValidity(bool returnValid, bool checkHash)
for (auto & i : drv->outputs) { for (auto & i : drv->outputs) {
if (!wantOutput(i.first, wantedOutputs)) continue; if (!wantOutput(i.first, wantedOutputs)) continue;
bool good = bool good =
worker.store.isValidPath(i.second.path) && worker.store.isValidPath(i.second.path(worker.store, drv->name)) &&
(!checkHash || worker.pathContentsGood(i.second.path)); (!checkHash || worker.pathContentsGood(i.second.path(worker.store, drv->name)));
if (good == returnValid) result.insert(i.second.path); if (good == returnValid) result.insert(i.second.path(worker.store, drv->name));
} }
return result; return result;
} }
@ -5006,7 +5012,7 @@ bool Worker::pathContentsGood(const StorePath & path)
if (!pathExists(store.printStorePath(path))) if (!pathExists(store.printStorePath(path)))
res = false; res = false;
else { else {
HashResult current = hashPath(*info->narHash.type, store.printStorePath(path)); HashResult current = hashPath(info->narHash->type, store.printStorePath(path));
Hash nullHash(htSHA256); Hash nullHash(htSHA256);
res = info->narHash == nullHash || info->narHash == current.first; res = info->narHash == nullHash || info->narHash == current.first;
} }
@ -5032,7 +5038,7 @@ void Worker::markContentsGood(const StorePath & path)
static void primeCache(Store & store, const std::vector<StorePathWithOutputs> & paths) static void primeCache(Store & store, const std::vector<StorePathWithOutputs> & paths)
{ {
StorePathSet willBuild, willSubstitute, unknown; StorePathSet willBuild, willSubstitute, unknown;
unsigned long long downloadSize, narSize; uint64_t downloadSize, narSize;
store.queryMissing(paths, willBuild, willSubstitute, unknown, downloadSize, narSize); store.queryMissing(paths, willBuild, willSubstitute, unknown, downloadSize, narSize);
if (!willBuild.empty() && 0 == settings.maxBuildJobs && getMachines().empty()) if (!willBuild.empty() && 0 == settings.maxBuildJobs && getMachines().empty())

View file

@ -9,7 +9,7 @@ struct Package {
Path path; Path path;
bool active; bool active;
int priority; int priority;
Package(Path path, bool active, int priority) : path{path}, active{active}, priority{priority} {} Package(const Path & path, bool active, int priority) : path{path}, active{active}, priority{priority} {}
}; };
typedef std::vector<Package> Packages; typedef std::vector<Package> Packages;

View file

@ -63,16 +63,19 @@ void builtinFetchurl(const BasicDerivation & drv, const std::string & netrcData)
auto & output = drv.outputs.begin()->second; auto & output = drv.outputs.begin()->second;
/* Try the hashed mirrors first. */ /* Try the hashed mirrors first. */
if (output.hash && output.hash->method == FileIngestionMethod::Flat) if (auto hash = std::get_if<DerivationOutputFixed>(&output.output)) {
for (auto hashedMirror : settings.hashedMirrors.get()) if (hash->hash.method == FileIngestionMethod::Flat) {
for (auto hashedMirror : settings.hashedMirrors.get()) {
try { try {
if (!hasSuffix(hashedMirror, "/")) hashedMirror += '/'; if (!hasSuffix(hashedMirror, "/")) hashedMirror += '/';
auto & h = output.hash->hash; fetch(hashedMirror + printHashType(hash->hash.hash.type) + "/" + hash->hash.hash.to_string(Base16, false));
fetch(hashedMirror + printHashType(*h.type) + "/" + h.to_string(Base16, false));
return; return;
} catch (Error & e) { } catch (Error & e) {
debug(e.what()); debug(e.what());
} }
}
}
}
/* Otherwise try the specified URL. */ /* Otherwise try the specified URL. */
fetch(mainUrl); fetch(mainUrl);

View file

@ -3,7 +3,7 @@
namespace nix { namespace nix {
std::string FixedOutputHash::printMethodAlgo() const { std::string FixedOutputHash::printMethodAlgo() const {
return makeFileIngestionPrefix(method) + printHashType(*hash.type); return makeFileIngestionPrefix(method) + printHashType(hash.type);
} }
std::string makeFileIngestionPrefix(const FileIngestionMethod m) { std::string makeFileIngestionPrefix(const FileIngestionMethod m) {
@ -46,7 +46,7 @@ ContentAddress parseContentAddress(std::string_view rawCa) {
if (prefix == "text") { if (prefix == "text") {
auto hashTypeAndHash = rawCa.substr(prefixSeparator+1, string::npos); auto hashTypeAndHash = rawCa.substr(prefixSeparator+1, string::npos);
Hash hash = Hash(string(hashTypeAndHash)); Hash hash = Hash(string(hashTypeAndHash));
if (*hash.type != htSHA256) { if (hash.type != htSHA256) {
throw Error("parseContentAddress: the text hash should have type SHA256"); throw Error("parseContentAddress: the text hash should have type SHA256");
} }
return TextHash { hash }; return TextHash { hash };
@ -82,4 +82,16 @@ std::string renderContentAddress(std::optional<ContentAddress> ca) {
return ca ? renderContentAddress(*ca) : ""; return ca ? renderContentAddress(*ca) : "";
} }
Hash getContentAddressHash(const ContentAddress & ca)
{
return std::visit(overloaded {
[](TextHash th) {
return th.hash;
},
[](FixedOutputHash fsh) {
return fsh.hash;
}
}, ca);
}
} }

View file

@ -53,4 +53,6 @@ ContentAddress parseContentAddress(std::string_view rawCa);
std::optional<ContentAddress> parseContentAddressOpt(std::string_view rawCaOpt); std::optional<ContentAddress> parseContentAddressOpt(std::string_view rawCaOpt);
Hash getContentAddressHash(const ContentAddress & ca);
} }

View file

@ -78,10 +78,10 @@ struct TunnelLogger : public Logger
if (ei.level > verbosity) return; if (ei.level > verbosity) return;
std::stringstream oss; std::stringstream oss;
oss << ei; showErrorInfo(oss, ei, false);
StringSink buf; StringSink buf;
buf << STDERR_NEXT << oss.str() << "\n"; // (fs.s + "\n"); buf << STDERR_NEXT << oss.str();
enqueueMsg(*buf.s); enqueueMsg(*buf.s);
} }
@ -173,31 +173,6 @@ struct TunnelSource : BufferedSource
} }
}; };
/* If the NAR archive contains a single file at top-level, then save
the contents of the file to `s'. Otherwise barf. */
struct RetrieveRegularNARSink : ParseSink
{
bool regular;
string s;
RetrieveRegularNARSink() : regular(true) { }
void createDirectory(const Path & path)
{
regular = false;
}
void receiveContents(unsigned char * data, unsigned int len)
{
s.append((const char *) data, len);
}
void createSymlink(const Path & path, const string & target)
{
regular = false;
}
};
struct ClientSettings struct ClientSettings
{ {
bool keepFailed; bool keepFailed;
@ -314,7 +289,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
logger->startWork(); logger->startWork();
auto hash = store->queryPathInfo(path)->narHash; auto hash = store->queryPathInfo(path)->narHash;
logger->stopWork(); logger->stopWork();
to << hash.to_string(Base16, false); to << hash->to_string(Base16, false);
break; break;
} }
@ -347,6 +322,15 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
break; break;
} }
case wopQueryDerivationOutputMap: {
auto path = store->parseStorePath(readString(from));
logger->startWork();
OutputPathMap outputs = store->queryDerivationOutputMap(path);
logger->stopWork();
writeOutputPathMap(*store, to, outputs);
break;
}
case wopQueryDeriver: { case wopQueryDeriver: {
auto path = store->parseStorePath(readString(from)); auto path = store->parseStorePath(readString(from));
logger->startWork(); logger->startWork();
@ -366,42 +350,44 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
} }
case wopAddToStore: { case wopAddToStore: {
std::string s, baseName; HashType hashAlgo;
std::string baseName;
FileIngestionMethod method; FileIngestionMethod method;
{ {
bool fixed; uint8_t recursive; bool fixed;
from >> baseName >> fixed /* obsolete */ >> recursive >> s; uint8_t recursive;
std::string hashAlgoRaw;
from >> baseName >> fixed /* obsolete */ >> recursive >> hashAlgoRaw;
if (recursive > (uint8_t) FileIngestionMethod::Recursive) if (recursive > (uint8_t) FileIngestionMethod::Recursive)
throw Error("unsupported FileIngestionMethod with value of %i; you may need to upgrade nix-daemon", recursive); throw Error("unsupported FileIngestionMethod with value of %i; you may need to upgrade nix-daemon", recursive);
method = FileIngestionMethod { recursive }; method = FileIngestionMethod { recursive };
/* Compatibility hack. */ /* Compatibility hack. */
if (!fixed) { if (!fixed) {
s = "sha256"; hashAlgoRaw = "sha256";
method = FileIngestionMethod::Recursive; method = FileIngestionMethod::Recursive;
} }
hashAlgo = parseHashType(hashAlgoRaw);
} }
HashType hashAlgo = parseHashType(s);
TeeSource savedNAR(from); StringSink saved;
RetrieveRegularNARSink savedRegular; TeeSource savedNARSource(from, saved);
RetrieveRegularNARSink savedRegular { saved };
if (method == FileIngestionMethod::Recursive) { if (method == FileIngestionMethod::Recursive) {
/* Get the entire NAR dump from the client and save it to /* Get the entire NAR dump from the client and save it to
a string so that we can pass it to a string so that we can pass it to
addToStoreFromDump(). */ addToStoreFromDump(). */
ParseSink sink; /* null sink; just parse the NAR */ ParseSink sink; /* null sink; just parse the NAR */
parseDump(sink, savedNAR); parseDump(sink, savedNARSource);
} else } else
parseDump(savedRegular, from); parseDump(savedRegular, from);
logger->startWork(); logger->startWork();
if (!savedRegular.regular) throw Error("regular file expected"); if (!savedRegular.regular) throw Error("regular file expected");
auto path = store->addToStoreFromDump( // FIXME: try to stream directly from `from`.
method == FileIngestionMethod::Recursive ? *savedNAR.data : savedRegular.s, StringSource dumpSource { *saved.s };
baseName, auto path = store->addToStoreFromDump(dumpSource, baseName, method, hashAlgo);
method,
hashAlgo);
logger->stopWork(); logger->stopWork();
to << store->printStorePath(path); to << store->printStorePath(path);
@ -433,7 +419,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
case wopImportPaths: { case wopImportPaths: {
logger->startWork(); logger->startWork();
TunnelSource source(from, to); TunnelSource source(from, to);
auto paths = store->importPaths(source, nullptr, auto paths = store->importPaths(source,
trusted ? NoCheckSigs : CheckSigs); trusted ? NoCheckSigs : CheckSigs);
logger->stopWork(); logger->stopWork();
Strings paths2; Strings paths2;
@ -465,7 +451,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
case wopBuildDerivation: { case wopBuildDerivation: {
auto drvPath = store->parseStorePath(readString(from)); auto drvPath = store->parseStorePath(readString(from));
BasicDerivation drv; BasicDerivation drv;
readDerivation(from, *store, drv); readDerivation(from, *store, drv, Derivation::nameFromPath(drvPath));
BuildMode buildMode = (BuildMode) readInt(from); BuildMode buildMode = (BuildMode) readInt(from);
logger->startWork(); logger->startWork();
if (!trusted) if (!trusted)
@ -646,7 +632,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
if (GET_PROTOCOL_MINOR(clientVersion) >= 17) if (GET_PROTOCOL_MINOR(clientVersion) >= 17)
to << 1; to << 1;
to << (info->deriver ? store->printStorePath(*info->deriver) : "") to << (info->deriver ? store->printStorePath(*info->deriver) : "")
<< info->narHash.to_string(Base16, false); << info->narHash->to_string(Base16, false);
writeStorePaths(*store, to, info->references); writeStorePaths(*store, to, info->references);
to << info->registrationTime << info->narSize; to << info->registrationTime << info->narSize;
if (GET_PROTOCOL_MINOR(clientVersion) >= 16) { if (GET_PROTOCOL_MINOR(clientVersion) >= 16) {
@ -717,24 +703,84 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
if (!trusted) if (!trusted)
info.ultimate = false; info.ultimate = false;
std::string saved; if (GET_PROTOCOL_MINOR(clientVersion) >= 23) {
struct FramedSource : Source
{
Source & from;
bool eof = false;
std::vector<unsigned char> pending;
size_t pos = 0;
FramedSource(Source & from) : from(from)
{ }
~FramedSource()
{
if (!eof) {
while (true) {
auto n = readInt(from);
if (!n) break;
std::vector<unsigned char> data(n);
from(data.data(), n);
}
}
}
size_t read(unsigned char * data, size_t len) override
{
if (eof) throw EndOfFile("reached end of FramedSource");
if (pos >= pending.size()) {
size_t len = readInt(from);
if (!len) {
eof = true;
return 0;
}
pending = std::vector<unsigned char>(len);
pos = 0;
from(pending.data(), len);
}
auto n = std::min(len, pending.size() - pos);
memcpy(data, pending.data() + pos, n);
pos += n;
return n;
}
};
logger->startWork();
{
FramedSource source(from);
store->addToStore(info, source, (RepairFlag) repair,
dontCheckSigs ? NoCheckSigs : CheckSigs);
}
logger->stopWork();
}
else {
std::unique_ptr<Source> source; std::unique_ptr<Source> source;
if (GET_PROTOCOL_MINOR(clientVersion) >= 21) if (GET_PROTOCOL_MINOR(clientVersion) >= 21)
source = std::make_unique<TunnelSource>(from, to); source = std::make_unique<TunnelSource>(from, to);
else { else {
TeeSink tee(from); StringSink saved;
parseDump(tee, tee.source); TeeSource tee { from, saved };
saved = std::move(*tee.source.data); ParseSink ether;
source = std::make_unique<StringSource>(saved); parseDump(ether, tee);
source = std::make_unique<StringSource>(std::move(*saved.s));
} }
logger->startWork(); logger->startWork();
// FIXME: race if addToStore doesn't read source? // FIXME: race if addToStore doesn't read source?
store->addToStore(info, *source, (RepairFlag) repair, store->addToStore(info, *source, (RepairFlag) repair,
dontCheckSigs ? NoCheckSigs : CheckSigs, nullptr); dontCheckSigs ? NoCheckSigs : CheckSigs);
logger->stopWork(); logger->stopWork();
}
break; break;
} }
@ -744,7 +790,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
targets.push_back(store->parsePathWithOutputs(s)); targets.push_back(store->parsePathWithOutputs(s));
logger->startWork(); logger->startWork();
StorePathSet willBuild, willSubstitute, unknown; StorePathSet willBuild, willSubstitute, unknown;
unsigned long long downloadSize, narSize; uint64_t downloadSize, narSize;
store->queryMissing(targets, willBuild, willSubstitute, unknown, downloadSize, narSize); store->queryMissing(targets, willBuild, willSubstitute, unknown, downloadSize, narSize);
logger->stopWork(); logger->stopWork();
writeStorePaths(*store, to, willBuild); writeStorePaths(*store, to, willBuild);

View file

@ -4,16 +4,23 @@
#include "util.hh" #include "util.hh"
#include "worker-protocol.hh" #include "worker-protocol.hh"
#include "fs-accessor.hh" #include "fs-accessor.hh"
#include "istringstream_nocopy.hh"
namespace nix { namespace nix {
const StorePath & BasicDerivation::findOutput(const string & id) const // FIXME Put this somewhere?
template<class... Ts> struct overloaded : Ts... { using Ts::operator()...; };
template<class... Ts> overloaded(Ts...) -> overloaded<Ts...>;
StorePath DerivationOutput::path(const Store & store, std::string_view drvName) const
{ {
auto i = outputs.find(id); return std::visit(overloaded {
if (i == outputs.end()) [](DerivationOutputInputAddressed doi) {
throw Error("derivation has no output '%s'", id); return doi.path;
return i->second.path; },
[&](DerivationOutputFixed dof) {
return store.makeFixedOutputPath(dof.hash.method, dof.hash.hash, drvName);
}
}, output);
} }
@ -101,14 +108,13 @@ static StringSet parseStrings(std::istream & str, bool arePaths)
} }
static DerivationOutput parseDerivationOutput(const Store & store, istringstream_nocopy & str) static DerivationOutput parseDerivationOutput(const Store & store, std::istringstream & str)
{ {
expect(str, ","); auto path = store.parseStorePath(parsePath(str)); expect(str, ","); auto path = store.parseStorePath(parsePath(str));
expect(str, ","); auto hashAlgo = parseString(str); expect(str, ","); auto hashAlgo = parseString(str);
expect(str, ","); const auto hash = parseString(str); expect(str, ","); const auto hash = parseString(str);
expect(str, ")"); expect(str, ")");
std::optional<FixedOutputHash> fsh;
if (hashAlgo != "") { if (hashAlgo != "") {
auto method = FileIngestionMethod::Flat; auto method = FileIngestionMethod::Flat;
if (string(hashAlgo, 0, 2) == "r:") { if (string(hashAlgo, 0, 2) == "r:") {
@ -116,23 +122,30 @@ static DerivationOutput parseDerivationOutput(const Store & store, istringstream
hashAlgo = string(hashAlgo, 2); hashAlgo = string(hashAlgo, 2);
} }
const HashType hashType = parseHashType(hashAlgo); const HashType hashType = parseHashType(hashAlgo);
fsh = FixedOutputHash {
.method = std::move(method),
.hash = Hash(hash, hashType),
};
}
return DerivationOutput { return DerivationOutput {
.output = DerivationOutputFixed {
.hash = FixedOutputHash {
.method = std::move(method),
.hash = Hash(hash, hashType),
},
}
};
} else
return DerivationOutput {
.output = DerivationOutputInputAddressed {
.path = std::move(path), .path = std::move(path),
.hash = std::move(fsh), }
}; };
} }
static Derivation parseDerivation(const Store & store, const string & s) static Derivation parseDerivation(const Store & store, std::string && s, std::string_view name)
{ {
Derivation drv; Derivation drv;
istringstream_nocopy str(s); drv.name = name;
std::istringstream str(std::move(s));
expect(str, "Derive(["); expect(str, "Derive([");
/* Parse the list of outputs. */ /* Parse the list of outputs. */
@ -175,10 +188,10 @@ static Derivation parseDerivation(const Store & store, const string & s)
} }
Derivation readDerivation(const Store & store, const Path & drvPath) Derivation readDerivation(const Store & store, const Path & drvPath, std::string_view name)
{ {
try { try {
return parseDerivation(store, readFile(drvPath)); return parseDerivation(store, readFile(drvPath), name);
} catch (FormatError & e) { } catch (FormatError & e) {
throw Error("error parsing derivation '%1%': %2%", drvPath, e.msg()); throw Error("error parsing derivation '%1%': %2%", drvPath, e.msg());
} }
@ -196,7 +209,7 @@ Derivation Store::readDerivation(const StorePath & drvPath)
{ {
auto accessor = getFSAccessor(); auto accessor = getFSAccessor();
try { try {
return parseDerivation(*this, accessor->readFile(printStorePath(drvPath))); return parseDerivation(*this, accessor->readFile(printStorePath(drvPath)), Derivation::nameFromPath(drvPath));
} catch (FormatError & e) { } catch (FormatError & e) {
throw Error("error parsing derivation '%s': %s", printStorePath(drvPath), e.msg()); throw Error("error parsing derivation '%s': %s", printStorePath(drvPath), e.msg());
} }
@ -264,10 +277,14 @@ string Derivation::unparse(const Store & store, bool maskOutputs,
for (auto & i : outputs) { for (auto & i : outputs) {
if (first) first = false; else s += ','; if (first) first = false; else s += ',';
s += '('; printUnquotedString(s, i.first); s += '('; printUnquotedString(s, i.first);
s += ','; printUnquotedString(s, maskOutputs ? "" : store.printStorePath(i.second.path)); s += ','; printUnquotedString(s, maskOutputs ? "" : store.printStorePath(i.second.path(store, name)));
s += ','; printUnquotedString(s, i.second.hash ? i.second.hash->printMethodAlgo() : ""); if (auto hash = std::get_if<DerivationOutputFixed>(&i.second.output)) {
s += ','; printUnquotedString(s, s += ','; printUnquotedString(s, hash->hash.printMethodAlgo());
i.second.hash ? i.second.hash->hash.to_string(Base16, false) : ""); s += ','; printUnquotedString(s, hash->hash.hash.to_string(Base16, false));
} else {
s += ','; printUnquotedString(s, "");
s += ','; printUnquotedString(s, "");
}
s += ')'; s += ')';
} }
@ -323,7 +340,7 @@ bool BasicDerivation::isFixedOutput() const
{ {
return outputs.size() == 1 && return outputs.size() == 1 &&
outputs.begin()->first == "out" && outputs.begin()->first == "out" &&
outputs.begin()->second.hash; std::holds_alternative<DerivationOutputFixed>(outputs.begin()->second.output);
} }
@ -355,10 +372,11 @@ Hash hashDerivationModulo(Store & store, const Derivation & drv, bool maskOutput
/* Return a fixed hash for fixed-output derivations. */ /* Return a fixed hash for fixed-output derivations. */
if (drv.isFixedOutput()) { if (drv.isFixedOutput()) {
DerivationOutputs::const_iterator i = drv.outputs.begin(); DerivationOutputs::const_iterator i = drv.outputs.begin();
auto hash = std::get<DerivationOutputFixed>(i->second.output);
return hashString(htSHA256, "fixed:out:" return hashString(htSHA256, "fixed:out:"
+ i->second.hash->printMethodAlgo() + ":" + hash.hash.printMethodAlgo() + ":"
+ i->second.hash->hash.to_string(Base16, false) + ":" + hash.hash.hash.to_string(Base16, false) + ":"
+ store.printStorePath(i->second.path)); + store.printStorePath(i->second.path(store, drv.name)));
} }
/* For other derivations, replace the inputs paths with recursive /* For other derivations, replace the inputs paths with recursive
@ -392,11 +410,11 @@ bool wantOutput(const string & output, const std::set<string> & wanted)
} }
StorePathSet BasicDerivation::outputPaths() const StorePathSet BasicDerivation::outputPaths(const Store & store) const
{ {
StorePathSet paths; StorePathSet paths;
for (auto & i : outputs) for (auto & i : outputs)
paths.insert(i.second.path); paths.insert(i.second.path(store, name));
return paths; return paths;
} }
@ -406,7 +424,6 @@ static DerivationOutput readDerivationOutput(Source & in, const Store & store)
auto hashAlgo = readString(in); auto hashAlgo = readString(in);
auto hash = readString(in); auto hash = readString(in);
std::optional<FixedOutputHash> fsh;
if (hashAlgo != "") { if (hashAlgo != "") {
auto method = FileIngestionMethod::Flat; auto method = FileIngestionMethod::Flat;
if (string(hashAlgo, 0, 2) == "r:") { if (string(hashAlgo, 0, 2) == "r:") {
@ -414,15 +431,19 @@ static DerivationOutput readDerivationOutput(Source & in, const Store & store)
hashAlgo = string(hashAlgo, 2); hashAlgo = string(hashAlgo, 2);
} }
auto hashType = parseHashType(hashAlgo); auto hashType = parseHashType(hashAlgo);
fsh = FixedOutputHash { return DerivationOutput {
.output = DerivationOutputFixed {
.hash = FixedOutputHash {
.method = std::move(method), .method = std::move(method),
.hash = Hash(hash, hashType), .hash = Hash(hash, hashType),
}; },
} }
};
} else
return DerivationOutput { return DerivationOutput {
.output = DerivationOutputInputAddressed {
.path = std::move(path), .path = std::move(path),
.hash = std::move(fsh), }
}; };
} }
@ -435,8 +456,19 @@ StringSet BasicDerivation::outputNames() const
} }
Source & readDerivation(Source & in, const Store & store, BasicDerivation & drv) std::string_view BasicDerivation::nameFromPath(const StorePath & drvPath) {
auto nameWithSuffix = drvPath.name();
constexpr std::string_view extension = ".drv";
assert(hasSuffix(nameWithSuffix, extension));
nameWithSuffix.remove_suffix(extension.size());
return nameWithSuffix;
}
Source & readDerivation(Source & in, const Store & store, BasicDerivation & drv, std::string_view name)
{ {
drv.name = name;
drv.outputs.clear(); drv.outputs.clear();
auto nr = readNum<size_t>(in); auto nr = readNum<size_t>(in);
for (size_t n = 0; n < nr; n++) { for (size_t n = 0; n < nr; n++) {
@ -465,10 +497,10 @@ void writeDerivation(Sink & out, const Store & store, const BasicDerivation & dr
out << drv.outputs.size(); out << drv.outputs.size();
for (auto & i : drv.outputs) { for (auto & i : drv.outputs) {
out << i.first out << i.first
<< store.printStorePath(i.second.path); << store.printStorePath(i.second.path(store, drv.name));
if (i.second.hash) { if (auto hash = std::get_if<DerivationOutputFixed>(&i.second.output)) {
out << i.second.hash->printMethodAlgo() out << hash->hash.printMethodAlgo()
<< i.second.hash->hash.to_string(Base16, false); << hash->hash.hash.to_string(Base16, false);
} else { } else {
out << "" << ""; out << "" << "";
} }

View file

@ -13,10 +13,20 @@ namespace nix {
/* Abstract syntax of derivations. */ /* Abstract syntax of derivations. */
struct DerivationOutput struct DerivationOutputInputAddressed
{ {
StorePath path; StorePath path;
std::optional<FixedOutputHash> hash; /* hash used for expected hash computation */ };
struct DerivationOutputFixed
{
FixedOutputHash hash; /* hash used for expected hash computation */
};
struct DerivationOutput
{
std::variant<DerivationOutputInputAddressed, DerivationOutputFixed> output;
StorePath path(const Store & store, std::string_view drvName) const;
}; };
typedef std::map<string, DerivationOutput> DerivationOutputs; typedef std::map<string, DerivationOutput> DerivationOutputs;
@ -35,24 +45,23 @@ struct BasicDerivation
Path builder; Path builder;
Strings args; Strings args;
StringPairs env; StringPairs env;
std::string name;
BasicDerivation() { } BasicDerivation() { }
virtual ~BasicDerivation() { }; virtual ~BasicDerivation() { };
/* Return the path corresponding to the output identifier `id' in
the given derivation. */
const StorePath & findOutput(const std::string & id) const;
bool isBuiltin() const; bool isBuiltin() const;
/* Return true iff this is a fixed-output derivation. */ /* Return true iff this is a fixed-output derivation. */
bool isFixedOutput() const; bool isFixedOutput() const;
/* Return the output paths of a derivation. */ /* Return the output paths of a derivation. */
StorePathSet outputPaths() const; StorePathSet outputPaths(const Store & store) const;
/* Return the output names of a derivation. */ /* Return the output names of a derivation. */
StringSet outputNames() const; StringSet outputNames() const;
static std::string_view nameFromPath(const StorePath & storePath);
}; };
struct Derivation : BasicDerivation struct Derivation : BasicDerivation
@ -76,7 +85,7 @@ StorePath writeDerivation(ref<Store> store,
const Derivation & drv, std::string_view name, RepairFlag repair = NoRepair); const Derivation & drv, std::string_view name, RepairFlag repair = NoRepair);
/* Read a derivation from a file. */ /* Read a derivation from a file. */
Derivation readDerivation(const Store & store, const Path & drvPath); Derivation readDerivation(const Store & store, const Path & drvPath, std::string_view name);
// FIXME: remove // FIXME: remove
bool isDerivation(const string & fileName); bool isDerivation(const string & fileName);
@ -93,7 +102,7 @@ bool wantOutput(const string & output, const std::set<string> & wanted);
struct Source; struct Source;
struct Sink; struct Sink;
Source & readDerivation(Source & in, const Store & store, BasicDerivation & drv); Source & readDerivation(Source & in, const Store & store, BasicDerivation & drv, std::string_view name);
void writeDerivation(Sink & out, const Store & store, const BasicDerivation & drv); void writeDerivation(Sink & out, const Store & store, const BasicDerivation & drv);
std::string hashPlaceholder(const std::string & outputName); std::string hashPlaceholder(const std::string & outputName);

View file

@ -7,24 +7,6 @@
namespace nix { namespace nix {
struct HashAndWriteSink : Sink
{
Sink & writeSink;
HashSink hashSink;
HashAndWriteSink(Sink & writeSink) : writeSink(writeSink), hashSink(htSHA256)
{
}
virtual void operator () (const unsigned char * data, size_t len)
{
writeSink(data, len);
hashSink(data, len);
}
Hash currentHash()
{
return hashSink.currentHash().first;
}
};
void Store::exportPaths(const StorePathSet & paths, Sink & sink) void Store::exportPaths(const StorePathSet & paths, Sink & sink)
{ {
auto sorted = topoSortPaths(paths); auto sorted = topoSortPaths(paths);
@ -47,28 +29,29 @@ void Store::exportPath(const StorePath & path, Sink & sink)
{ {
auto info = queryPathInfo(path); auto info = queryPathInfo(path);
HashAndWriteSink hashAndWriteSink(sink); HashSink hashSink(htSHA256);
TeeSink teeSink(sink, hashSink);
narFromPath(path, hashAndWriteSink); narFromPath(path, teeSink);
/* Refuse to export paths that have changed. This prevents /* Refuse to export paths that have changed. This prevents
filesystem corruption from spreading to other machines. filesystem corruption from spreading to other machines.
Don't complain if the stored hash is zero (unknown). */ Don't complain if the stored hash is zero (unknown). */
Hash hash = hashAndWriteSink.currentHash(); Hash hash = hashSink.currentHash().first;
if (hash != info->narHash && info->narHash != Hash(*info->narHash.type)) if (hash != info->narHash && info->narHash != Hash(info->narHash->type))
throw Error("hash of path '%s' has changed from '%s' to '%s'!", throw Error("hash of path '%s' has changed from '%s' to '%s'!",
printStorePath(path), info->narHash.to_string(Base32, true), hash.to_string(Base32, true)); printStorePath(path), info->narHash->to_string(Base32, true), hash.to_string(Base32, true));
hashAndWriteSink teeSink
<< exportMagic << exportMagic
<< printStorePath(path); << printStorePath(path);
writeStorePaths(*this, hashAndWriteSink, info->references); writeStorePaths(*this, teeSink, info->references);
hashAndWriteSink teeSink
<< (info->deriver ? printStorePath(*info->deriver) : "") << (info->deriver ? printStorePath(*info->deriver) : "")
<< 0; << 0;
} }
StorePaths Store::importPaths(Source & source, std::shared_ptr<FSAccessor> accessor, CheckSigsFlag checkSigs) StorePaths Store::importPaths(Source & source, CheckSigsFlag checkSigs)
{ {
StorePaths res; StorePaths res;
while (true) { while (true) {
@ -77,8 +60,10 @@ StorePaths Store::importPaths(Source & source, std::shared_ptr<FSAccessor> acces
if (n != 1) throw Error("input doesn't look like something created by 'nix-store --export'"); if (n != 1) throw Error("input doesn't look like something created by 'nix-store --export'");
/* Extract the NAR from the source. */ /* Extract the NAR from the source. */
TeeSink tee(source); StringSink saved;
parseDump(tee, tee.source); TeeSource tee { source, saved };
ParseSink ether;
parseDump(ether, tee);
uint32_t magic = readInt(source); uint32_t magic = readInt(source);
if (magic != exportMagic) if (magic != exportMagic)
@ -94,16 +79,16 @@ StorePaths Store::importPaths(Source & source, std::shared_ptr<FSAccessor> acces
if (deriver != "") if (deriver != "")
info.deriver = parseStorePath(deriver); info.deriver = parseStorePath(deriver);
info.narHash = hashString(htSHA256, *tee.source.data); info.narHash = hashString(htSHA256, *saved.s);
info.narSize = tee.source.data->size(); info.narSize = saved.s->size();
// Ignore optional legacy signature. // Ignore optional legacy signature.
if (readInt(source) == 1) if (readInt(source) == 1)
readString(source); readString(source);
// Can't use underlying source, which would have been exhausted // Can't use underlying source, which would have been exhausted
auto source = StringSource { *tee.source.data }; auto source = StringSource { *saved.s };
addToStore(info, source, NoRepair, checkSigs, accessor); addToStore(info, source, NoRepair, checkSigs);
res.push_back(info.path); res.push_back(info.path);
} }

View file

@ -22,6 +22,7 @@
#include <queue> #include <queue>
#include <random> #include <random>
#include <thread> #include <thread>
#include <regex>
using namespace std::string_literals; using namespace std::string_literals;
@ -56,7 +57,7 @@ struct curlFileTransfer : public FileTransfer
Callback<FileTransferResult> callback; Callback<FileTransferResult> callback;
CURL * req = 0; CURL * req = 0;
bool active = false; // whether the handle has been added to the multi object bool active = false; // whether the handle has been added to the multi object
std::string status; std::string statusMsg;
unsigned int attempt = 0; unsigned int attempt = 0;
@ -123,7 +124,7 @@ struct curlFileTransfer : public FileTransfer
if (requestHeaders) curl_slist_free_all(requestHeaders); if (requestHeaders) curl_slist_free_all(requestHeaders);
try { try {
if (!done) if (!done)
fail(FileTransferError(Interrupted, "download of '%s' was interrupted", request.uri)); fail(FileTransferError(Interrupted, nullptr, "download of '%s' was interrupted", request.uri));
} catch (...) { } catch (...) {
ignoreException(); ignoreException();
} }
@ -144,6 +145,7 @@ struct curlFileTransfer : public FileTransfer
LambdaSink finalSink; LambdaSink finalSink;
std::shared_ptr<CompressionSink> decompressionSink; std::shared_ptr<CompressionSink> decompressionSink;
std::optional<StringSink> errorSink;
std::exception_ptr writeException; std::exception_ptr writeException;
@ -153,9 +155,19 @@ struct curlFileTransfer : public FileTransfer
size_t realSize = size * nmemb; size_t realSize = size * nmemb;
result.bodySize += realSize; result.bodySize += realSize;
if (!decompressionSink) if (!decompressionSink) {
decompressionSink = makeDecompressionSink(encoding, finalSink); decompressionSink = makeDecompressionSink(encoding, finalSink);
if (! successfulStatuses.count(getHTTPStatus())) {
// In this case we want to construct a TeeSink, to keep
// the response around (which we figure won't be big
// like an actual download should be) to improve error
// messages.
errorSink = StringSink { };
}
}
if (errorSink)
(*errorSink)((unsigned char *) contents, realSize);
(*decompressionSink)((unsigned char *) contents, realSize); (*decompressionSink)((unsigned char *) contents, realSize);
return realSize; return realSize;
@ -175,12 +187,13 @@ struct curlFileTransfer : public FileTransfer
size_t realSize = size * nmemb; size_t realSize = size * nmemb;
std::string line((char *) contents, realSize); std::string line((char *) contents, realSize);
printMsg(lvlVomit, format("got header for '%s': %s") % request.uri % trim(line)); printMsg(lvlVomit, format("got header for '%s': %s") % request.uri % trim(line));
if (line.compare(0, 5, "HTTP/") == 0) { // new response starts static std::regex statusLine("HTTP/[^ ]+ +[0-9]+(.*)", std::regex::extended | std::regex::icase);
std::smatch match;
if (std::regex_match(line, match, statusLine)) {
result.etag = ""; result.etag = "";
auto ss = tokenizeString<vector<string>>(line, " ");
status = ss.size() >= 2 ? ss[1] : "";
result.data = std::make_shared<std::string>(); result.data = std::make_shared<std::string>();
result.bodySize = 0; result.bodySize = 0;
statusMsg = trim(match[1]);
acceptRanges = false; acceptRanges = false;
encoding = ""; encoding = "";
} else { } else {
@ -194,7 +207,9 @@ struct curlFileTransfer : public FileTransfer
the expected ETag on a 200 response, then shut the expected ETag on a 200 response, then shut
down the connection because we already have the down the connection because we already have the
data. */ data. */
if (result.etag == request.expectedETag && status == "200") { long httpStatus = 0;
curl_easy_getinfo(req, CURLINFO_RESPONSE_CODE, &httpStatus);
if (result.etag == request.expectedETag && httpStatus == 200) {
debug(format("shutting down on 200 HTTP response with expected ETag")); debug(format("shutting down on 200 HTTP response with expected ETag"));
return 0; return 0;
} }
@ -408,16 +423,21 @@ struct curlFileTransfer : public FileTransfer
attempt++; attempt++;
std::shared_ptr<std::string> response;
if (errorSink)
response = errorSink->s;
auto exc = auto exc =
code == CURLE_ABORTED_BY_CALLBACK && _isInterrupted code == CURLE_ABORTED_BY_CALLBACK && _isInterrupted
? FileTransferError(Interrupted, fmt("%s of '%s' was interrupted", request.verb(), request.uri)) ? FileTransferError(Interrupted, response, "%s of '%s' was interrupted", request.verb(), request.uri)
: httpStatus != 0 : httpStatus != 0
? FileTransferError(err, ? FileTransferError(err,
fmt("unable to %s '%s': HTTP error %d", response,
request.verb(), request.uri, httpStatus) fmt("unable to %s '%s': HTTP error %d ('%s')",
request.verb(), request.uri, httpStatus, statusMsg)
+ (code == CURLE_OK ? "" : fmt(" (curl error: %s)", curl_easy_strerror(code))) + (code == CURLE_OK ? "" : fmt(" (curl error: %s)", curl_easy_strerror(code)))
) )
: FileTransferError(err, : FileTransferError(err,
response,
fmt("unable to %s '%s': %s (%d)", fmt("unable to %s '%s': %s (%d)",
request.verb(), request.uri, curl_easy_strerror(code), code)); request.verb(), request.uri, curl_easy_strerror(code), code));
@ -675,7 +695,7 @@ struct curlFileTransfer : public FileTransfer
auto s3Res = s3Helper.getObject(bucketName, key); auto s3Res = s3Helper.getObject(bucketName, key);
FileTransferResult res; FileTransferResult res;
if (!s3Res.data) if (!s3Res.data)
throw FileTransferError(NotFound, fmt("S3 object '%s' does not exist", request.uri)); throw FileTransferError(NotFound, nullptr, "S3 object '%s' does not exist", request.uri);
res.data = s3Res.data; res.data = s3Res.data;
callback(std::move(res)); callback(std::move(res));
#else #else
@ -820,6 +840,21 @@ void FileTransfer::download(FileTransferRequest && request, Sink & sink)
} }
} }
template<typename... Args>
FileTransferError::FileTransferError(FileTransfer::Error error, std::shared_ptr<string> response, const Args & ... args)
: Error(args...), error(error), response(response)
{
const auto hf = hintfmt(args...);
// FIXME: Due to https://github.com/NixOS/nix/issues/3841 we don't know how
// to print different messages for different verbosity levels. For now
// we add some heuristics for detecting when we want to show the response.
if (response && (response->size() < 1024 || response->find("<html>") != string::npos)) {
err.hint = hintfmt("%1%\n\nresponse body:\n\n%2%", normaltxt(hf.str()), *response);
} else {
err.hint = hf;
}
}
bool isUri(const string & s) bool isUri(const string & s)
{ {
if (s.compare(0, 8, "channel:") == 0) return true; if (s.compare(0, 8, "channel:") == 0) return true;

View file

@ -103,10 +103,12 @@ class FileTransferError : public Error
{ {
public: public:
FileTransfer::Error error; FileTransfer::Error error;
std::shared_ptr<string> response; // intentionally optional
template<typename... Args> template<typename... Args>
FileTransferError(FileTransfer::Error error, const Args & ... args) FileTransferError(FileTransfer::Error error, std::shared_ptr<string> response, const Args & ... args);
: Error(args...), error(error)
{ } virtual const char* sname() const override { return "FileTransferError"; }
}; };
bool isUri(const string & s); bool isUri(const string & s);

View file

@ -262,11 +262,13 @@ void LocalStore::findTempRoots(FDs & fds, Roots & tempRoots, bool censor)
void LocalStore::findRoots(const Path & path, unsigned char type, Roots & roots) void LocalStore::findRoots(const Path & path, unsigned char type, Roots & roots)
{ {
auto foundRoot = [&](const Path & path, const Path & target) { auto foundRoot = [&](const Path & path, const Path & target) {
auto storePath = maybeParseStorePath(toStorePath(target)); try {
if (storePath && isValidPath(*storePath)) auto storePath = toStorePath(target).first;
roots[std::move(*storePath)].emplace(path); if (isValidPath(storePath))
roots[std::move(storePath)].emplace(path);
else else
printInfo("skipping invalid root from '%1%' to '%2%'", path, target); printInfo("skipping invalid root from '%1%' to '%2%'", path, target);
} catch (BadStorePath &) { }
}; };
try { try {
@ -472,15 +474,15 @@ void LocalStore::findRuntimeRoots(Roots & roots, bool censor)
for (auto & [target, links] : unchecked) { for (auto & [target, links] : unchecked) {
if (!isInStore(target)) continue; if (!isInStore(target)) continue;
Path pathS = toStorePath(target); try {
if (!isStorePath(pathS)) continue; auto path = toStorePath(target).first;
auto path = parseStorePath(pathS);
if (!isValidPath(path)) continue; if (!isValidPath(path)) continue;
debug("got additional root '%1%'", pathS); debug("got additional root '%1%'", printStorePath(path));
if (censor) if (censor)
roots[path].insert(censored); roots[path].insert(censored);
else else
roots[path].insert(links.begin(), links.end()); roots[path].insert(links.begin(), links.end());
} catch (BadStorePath &) { }
} }
} }
@ -498,7 +500,7 @@ struct LocalStore::GCState
StorePathSet alive; StorePathSet alive;
bool gcKeepOutputs; bool gcKeepOutputs;
bool gcKeepDerivations; bool gcKeepDerivations;
unsigned long long bytesInvalidated; uint64_t bytesInvalidated;
bool moveToTrash = true; bool moveToTrash = true;
bool shouldDelete; bool shouldDelete;
GCState(const GCOptions & options, GCResults & results) GCState(const GCOptions & options, GCResults & results)
@ -516,7 +518,7 @@ bool LocalStore::isActiveTempFile(const GCState & state,
void LocalStore::deleteGarbage(GCState & state, const Path & path) void LocalStore::deleteGarbage(GCState & state, const Path & path)
{ {
unsigned long long bytesFreed; uint64_t bytesFreed;
deletePath(path, bytesFreed); deletePath(path, bytesFreed);
state.results.bytesFreed += bytesFreed; state.results.bytesFreed += bytesFreed;
} }
@ -526,7 +528,7 @@ void LocalStore::deletePathRecursive(GCState & state, const Path & path)
{ {
checkInterrupt(); checkInterrupt();
unsigned long long size = 0; uint64_t size = 0;
auto storePath = maybeParseStorePath(path); auto storePath = maybeParseStorePath(path);
if (storePath && isValidPath(*storePath)) { if (storePath && isValidPath(*storePath)) {
@ -685,7 +687,7 @@ void LocalStore::removeUnusedLinks(const GCState & state)
AutoCloseDir dir(opendir(linksDir.c_str())); AutoCloseDir dir(opendir(linksDir.c_str()));
if (!dir) throw SysError("opening directory '%1%'", linksDir); if (!dir) throw SysError("opening directory '%1%'", linksDir);
long long actualSize = 0, unsharedSize = 0; int64_t actualSize = 0, unsharedSize = 0;
struct dirent * dirent; struct dirent * dirent;
while (errno = 0, dirent = readdir(dir.get())) { while (errno = 0, dirent = readdir(dir.get())) {
@ -715,10 +717,10 @@ void LocalStore::removeUnusedLinks(const GCState & state)
struct stat st; struct stat st;
if (stat(linksDir.c_str(), &st) == -1) if (stat(linksDir.c_str(), &st) == -1)
throw SysError("statting '%1%'", linksDir); throw SysError("statting '%1%'", linksDir);
long long overhead = st.st_blocks * 512ULL; auto overhead = st.st_blocks * 512ULL;
printInfo(format("note: currently hard linking saves %.2f MiB") printInfo("note: currently hard linking saves %.2f MiB",
% ((unsharedSize - actualSize - overhead) / (1024.0 * 1024.0))); ((unsharedSize - actualSize - overhead) / (1024.0 * 1024.0)));
} }

View file

@ -35,7 +35,7 @@ Settings::Settings()
, nixLibexecDir(canonPath(getEnv("NIX_LIBEXEC_DIR").value_or(NIX_LIBEXEC_DIR))) , nixLibexecDir(canonPath(getEnv("NIX_LIBEXEC_DIR").value_or(NIX_LIBEXEC_DIR)))
, nixBinDir(canonPath(getEnv("NIX_BIN_DIR").value_or(NIX_BIN_DIR))) , nixBinDir(canonPath(getEnv("NIX_BIN_DIR").value_or(NIX_BIN_DIR)))
, nixManDir(canonPath(NIX_MAN_DIR)) , nixManDir(canonPath(NIX_MAN_DIR))
, nixDaemonSocketFile(canonPath(nixStateDir + DEFAULT_SOCKET_PATH)) , nixDaemonSocketFile(canonPath(getEnv("NIX_DAEMON_SOCKET_PATH").value_or(nixStateDir + DEFAULT_SOCKET_PATH)))
{ {
buildUsersGroup = getuid() == 0 ? "nixbld" : ""; buildUsersGroup = getuid() == 0 ? "nixbld" : "";
lockCPU = getEnv("NIX_AFFINITY_HACK") == "1"; lockCPU = getEnv("NIX_AFFINITY_HACK") == "1";

View file

@ -196,10 +196,6 @@ public:
/* Whether to lock the Nix client and worker to the same CPU. */ /* Whether to lock the Nix client and worker to the same CPU. */
bool lockCPU; bool lockCPU;
/* Whether to show a stack trace if Nix evaluation fails. */
Setting<bool> showTrace{this, false, "show-trace",
"Whether to show a stack trace on evaluation errors."};
Setting<SandboxMode> sandboxMode{this, Setting<SandboxMode> sandboxMode{this,
#if __linux__ #if __linux__
smEnabled smEnabled
@ -369,6 +365,12 @@ public:
Setting<bool> warnDirty{this, true, "warn-dirty", Setting<bool> warnDirty{this, true, "warn-dirty",
"Whether to warn about dirty Git/Mercurial trees."}; "Whether to warn about dirty Git/Mercurial trees."};
Setting<size_t> narBufferSize{this, 32 * 1024 * 1024, "nar-buffer-size",
"Maximum size of NARs before spilling them to disk."};
Setting<std::string> flakeRegistry{this, "https://github.com/NixOS/flake-registry/raw/master/flake-registry.json", "flake-registry",
"Path or URI of the global flake registry."};
}; };

View file

@ -100,11 +100,11 @@ protected:
} }
void upsertFile(const std::string & path, void upsertFile(const std::string & path,
const std::string & data, std::shared_ptr<std::basic_iostream<char>> istream,
const std::string & mimeType) override const std::string & mimeType) override
{ {
auto req = FileTransferRequest(cacheUri + "/" + path); auto req = FileTransferRequest(cacheUri + "/" + path);
req.data = std::make_shared<string>(data); // FIXME: inefficient req.data = std::make_shared<string>(StreamToSourceAdapter(istream).drain());
req.mimeType = mimeType; req.mimeType = mimeType;
try { try {
getFileTransfer()->upload(req); getFileTransfer()->upload(req);

View file

@ -113,7 +113,7 @@ struct LegacySSHStore : public Store
if (GET_PROTOCOL_MINOR(conn->remoteVersion) >= 4) { if (GET_PROTOCOL_MINOR(conn->remoteVersion) >= 4) {
auto s = readString(conn->from); auto s = readString(conn->from);
info->narHash = s.empty() ? Hash() : Hash(s); info->narHash = s.empty() ? std::optional<Hash>{} : Hash{s};
info->ca = parseContentAddressOpt(readString(conn->from)); info->ca = parseContentAddressOpt(readString(conn->from));
info->sigs = readStrings<StringSet>(conn->from); info->sigs = readStrings<StringSet>(conn->from);
} }
@ -126,8 +126,7 @@ struct LegacySSHStore : public Store
} }
void addToStore(const ValidPathInfo & info, Source & source, void addToStore(const ValidPathInfo & info, Source & source,
RepairFlag repair, CheckSigsFlag checkSigs, RepairFlag repair, CheckSigsFlag checkSigs) override
std::shared_ptr<FSAccessor> accessor) override
{ {
debug("adding path '%s' to remote host '%s'", printStorePath(info.path), host); debug("adding path '%s' to remote host '%s'", printStorePath(info.path), host);
@ -139,7 +138,7 @@ struct LegacySSHStore : public Store
<< cmdAddToStoreNar << cmdAddToStoreNar
<< printStorePath(info.path) << printStorePath(info.path)
<< (info.deriver ? printStorePath(*info.deriver) : "") << (info.deriver ? printStorePath(*info.deriver) : "")
<< info.narHash.to_string(Base16, false); << info.narHash->to_string(Base16, false);
writeStorePaths(*this, conn->to, info.references); writeStorePaths(*this, conn->to, info.references);
conn->to conn->to
<< info.registrationTime << info.registrationTime

View file

@ -31,8 +31,18 @@ protected:
bool fileExists(const std::string & path) override; bool fileExists(const std::string & path) override;
void upsertFile(const std::string & path, void upsertFile(const std::string & path,
const std::string & data, std::shared_ptr<std::basic_iostream<char>> istream,
const std::string & mimeType) override; const std::string & mimeType) override
{
auto path2 = binaryCacheDir + "/" + path;
Path tmp = path2 + ".tmp." + std::to_string(getpid());
AutoDelete del(tmp, false);
StreamToSourceAdapter source(istream);
writeFile(tmp, source);
if (rename(tmp.c_str(), path2.c_str()))
throw SysError("renaming '%1%' to '%2%'", tmp, path2);
del.cancel();
}
void getFile(const std::string & path, Sink & sink) override void getFile(const std::string & path, Sink & sink) override
{ {
@ -52,7 +62,9 @@ protected:
if (entry.name.size() != 40 || if (entry.name.size() != 40 ||
!hasSuffix(entry.name, ".narinfo")) !hasSuffix(entry.name, ".narinfo"))
continue; continue;
paths.insert(parseStorePath(storeDir + "/" + entry.name.substr(0, entry.name.size() - 8))); paths.insert(parseStorePath(
storeDir + "/" + entry.name.substr(0, entry.name.size() - 8)
+ "-" + MissingName));
} }
return paths; return paths;
@ -68,28 +80,11 @@ void LocalBinaryCacheStore::init()
BinaryCacheStore::init(); BinaryCacheStore::init();
} }
static void atomicWrite(const Path & path, const std::string & s)
{
Path tmp = path + ".tmp." + std::to_string(getpid());
AutoDelete del(tmp, false);
writeFile(tmp, s);
if (rename(tmp.c_str(), path.c_str()))
throw SysError("renaming '%1%' to '%2%'", tmp, path);
del.cancel();
}
bool LocalBinaryCacheStore::fileExists(const std::string & path) bool LocalBinaryCacheStore::fileExists(const std::string & path)
{ {
return pathExists(binaryCacheDir + "/" + path); return pathExists(binaryCacheDir + "/" + path);
} }
void LocalBinaryCacheStore::upsertFile(const std::string & path,
const std::string & data,
const std::string & mimeType)
{
atomicWrite(binaryCacheDir + "/" + path, data);
}
static RegisterStoreImplementation regStore([]( static RegisterStoreImplementation regStore([](
const std::string & uri, const Store::Params & params) const std::string & uri, const Store::Params & params)
-> std::shared_ptr<Store> -> std::shared_ptr<Store>

View file

@ -20,9 +20,9 @@ struct LocalStoreAccessor : public FSAccessor
Path toRealPath(const Path & path) Path toRealPath(const Path & path)
{ {
Path storePath = store->toStorePath(path); auto storePath = store->toStorePath(path).first;
if (!store->isValidPath(store->parseStorePath(storePath))) if (!store->isValidPath(storePath))
throw InvalidPath("path '%1%' is not a valid store path", storePath); throw InvalidPath("path '%1%' is not a valid store path", store->printStorePath(storePath));
return store->getRealStoreDir() + std::string(path, store->storeDir.size()); return store->getRealStoreDir() + std::string(path, store->storeDir.size());
} }

View file

@ -560,19 +560,12 @@ void LocalStore::checkDerivationOutputs(const StorePath & drvPath, const Derivat
DerivationOutputs::const_iterator out = drv.outputs.find("out"); DerivationOutputs::const_iterator out = drv.outputs.find("out");
if (out == drv.outputs.end()) if (out == drv.outputs.end())
throw Error("derivation '%s' does not have an output named 'out'", printStorePath(drvPath)); throw Error("derivation '%s' does not have an output named 'out'", printStorePath(drvPath));
check(
makeFixedOutputPath(
out->second.hash->method,
out->second.hash->hash,
drvName),
out->second.path, "out");
} }
else { else {
Hash h = hashDerivationModulo(*this, drv, true); Hash h = hashDerivationModulo(*this, drv, true);
for (auto & i : drv.outputs) for (auto & i : drv.outputs)
check(makeOutputPath(i.first, h, drvName), i.second.path, i.first); check(makeOutputPath(i.first, h, drvName), i.second.path(*this, drv.name), i.first);
} }
} }
@ -586,7 +579,7 @@ uint64_t LocalStore::addValidPath(State & state,
state.stmtRegisterValidPath.use() state.stmtRegisterValidPath.use()
(printStorePath(info.path)) (printStorePath(info.path))
(info.narHash.to_string(Base16, true)) (info.narHash->to_string(Base16, true))
(info.registrationTime == 0 ? time(0) : info.registrationTime) (info.registrationTime == 0 ? time(0) : info.registrationTime)
(info.deriver ? printStorePath(*info.deriver) : "", (bool) info.deriver) (info.deriver ? printStorePath(*info.deriver) : "", (bool) info.deriver)
(info.narSize, info.narSize != 0) (info.narSize, info.narSize != 0)
@ -594,7 +587,7 @@ uint64_t LocalStore::addValidPath(State & state,
(concatStringsSep(" ", info.sigs), !info.sigs.empty()) (concatStringsSep(" ", info.sigs), !info.sigs.empty())
(renderContentAddress(info.ca), (bool) info.ca) (renderContentAddress(info.ca), (bool) info.ca)
.exec(); .exec();
uint64_t id = sqlite3_last_insert_rowid(state.db); uint64_t id = state.db.getLastInsertedRowId();
/* If this is a derivation, then store the derivation outputs in /* If this is a derivation, then store the derivation outputs in
the database. This is useful for the garbage collector: it can the database. This is useful for the garbage collector: it can
@ -614,7 +607,7 @@ uint64_t LocalStore::addValidPath(State & state,
state.stmtAddDerivationOutput.use() state.stmtAddDerivationOutput.use()
(id) (id)
(i.first) (i.first)
(printStorePath(i.second.path)) (printStorePath(i.second.path(*this, drv.name)))
.exec(); .exec();
} }
} }
@ -686,7 +679,7 @@ void LocalStore::updatePathInfo(State & state, const ValidPathInfo & info)
{ {
state.stmtUpdatePathInfo.use() state.stmtUpdatePathInfo.use()
(info.narSize, info.narSize != 0) (info.narSize, info.narSize != 0)
(info.narHash.to_string(Base16, true)) (info.narHash->to_string(Base16, true))
(info.ultimate ? 1 : 0, info.ultimate) (info.ultimate ? 1 : 0, info.ultimate)
(concatStringsSep(" ", info.sigs), !info.sigs.empty()) (concatStringsSep(" ", info.sigs), !info.sigs.empty())
(renderContentAddress(info.ca), (bool) info.ca) (renderContentAddress(info.ca), (bool) info.ca)
@ -774,17 +767,20 @@ StorePathSet LocalStore::queryValidDerivers(const StorePath & path)
} }
StorePathSet LocalStore::queryDerivationOutputs(const StorePath & path) OutputPathMap LocalStore::queryDerivationOutputMap(const StorePath & path)
{ {
return retrySQLite<StorePathSet>([&]() { return retrySQLite<OutputPathMap>([&]() {
auto state(_state.lock()); auto state(_state.lock());
auto useQueryDerivationOutputs(state->stmtQueryDerivationOutputs.use() auto useQueryDerivationOutputs(state->stmtQueryDerivationOutputs.use()
(queryValidPathId(*state, path))); (queryValidPathId(*state, path)));
StorePathSet outputs; OutputPathMap outputs;
while (useQueryDerivationOutputs.next()) while (useQueryDerivationOutputs.next())
outputs.insert(parseStorePath(useQueryDerivationOutputs.getStr(1))); outputs.emplace(
useQueryDerivationOutputs.getStr(0),
parseStorePath(useQueryDerivationOutputs.getStr(1))
);
return outputs; return outputs;
}); });
@ -897,7 +893,7 @@ void LocalStore::registerValidPaths(const ValidPathInfos & infos)
StorePathSet paths; StorePathSet paths;
for (auto & i : infos) { for (auto & i : infos) {
assert(i.narHash.type == htSHA256); assert(i.narHash && i.narHash->type == htSHA256);
if (isValidPath_(*state, i.path)) if (isValidPath_(*state, i.path))
updatePathInfo(*state, i); updatePathInfo(*state, i);
else else
@ -959,7 +955,7 @@ const PublicKeys & LocalStore::getPublicKeys()
void LocalStore::addToStore(const ValidPathInfo & info, Source & source, void LocalStore::addToStore(const ValidPathInfo & info, Source & source,
RepairFlag repair, CheckSigsFlag checkSigs, std::shared_ptr<FSAccessor> accessor) RepairFlag repair, CheckSigsFlag checkSigs)
{ {
if (!info.narHash) if (!info.narHash)
throw Error("cannot add path '%s' because it lacks a hash", printStorePath(info.path)); throw Error("cannot add path '%s' because it lacks a hash", printStorePath(info.path));
@ -973,7 +969,7 @@ void LocalStore::addToStore(const ValidPathInfo & info, Source & source,
PathLocks outputLock; PathLocks outputLock;
Path realPath = realStoreDir + "/" + std::string(info.path.to_string()); auto realPath = Store::toRealPath(info.path);
/* Lock the output path. But don't lock if we're being called /* Lock the output path. But don't lock if we're being called
from a build hook (whose parent process already acquired a from a build hook (whose parent process already acquired a
@ -1010,7 +1006,7 @@ void LocalStore::addToStore(const ValidPathInfo & info, Source & source,
if (hashResult.first != info.narHash) if (hashResult.first != info.narHash)
throw Error("hash mismatch importing path '%s';\n wanted: %s\n got: %s", throw Error("hash mismatch importing path '%s';\n wanted: %s\n got: %s",
printStorePath(info.path), info.narHash.to_string(Base32, true), hashResult.first.to_string(Base32, true)); printStorePath(info.path), info.narHash->to_string(Base32, true), hashResult.first.to_string(Base32, true));
if (hashResult.second != info.narSize) if (hashResult.second != info.narSize)
throw Error("size mismatch importing path '%s';\n wanted: %s\n got: %s", throw Error("size mismatch importing path '%s';\n wanted: %s\n got: %s",
@ -1030,12 +1026,78 @@ void LocalStore::addToStore(const ValidPathInfo & info, Source & source,
} }
StorePath LocalStore::addToStoreFromDump(const string & dump, const string & name, StorePath LocalStore::addToStore(const string & name, const Path & _srcPath,
FileIngestionMethod method, HashType hashAlgo, PathFilter & filter, RepairFlag repair)
{
Path srcPath(absPath(_srcPath));
auto source = sinkToSource([&](Sink & sink) {
if (method == FileIngestionMethod::Recursive)
dumpPath(srcPath, sink, filter);
else
readFile(srcPath, sink);
});
return addToStoreFromDump(*source, name, method, hashAlgo, repair);
}
StorePath LocalStore::addToStoreFromDump(Source & source0, const string & name,
FileIngestionMethod method, HashType hashAlgo, RepairFlag repair) FileIngestionMethod method, HashType hashAlgo, RepairFlag repair)
{ {
Hash h = hashString(hashAlgo, dump); /* For computing the store path. */
auto hashSink = std::make_unique<HashSink>(hashAlgo);
TeeSource source { source0, *hashSink };
auto dstPath = makeFixedOutputPath(method, h, name); /* Read the source path into memory, but only if it's up to
narBufferSize bytes. If it's larger, write it to a temporary
location in the Nix store. If the subsequently computed
destination store path is already valid, we just delete the
temporary path. Otherwise, we move it to the destination store
path. */
bool inMemory = false;
std::string dump;
/* Fill out buffer, and decide whether we are working strictly in
memory based on whether we break out because the buffer is full
or the original source is empty */
while (dump.size() < settings.narBufferSize) {
auto oldSize = dump.size();
constexpr size_t chunkSize = 65536;
auto want = std::min(chunkSize, settings.narBufferSize - oldSize);
dump.resize(oldSize + want);
auto got = 0;
try {
got = source.read((uint8_t *) dump.data() + oldSize, want);
} catch (EndOfFile &) {
inMemory = true;
break;
}
dump.resize(oldSize + got);
}
std::unique_ptr<AutoDelete> delTempDir;
Path tempPath;
if (!inMemory) {
/* Drain what we pulled so far, and then keep on pulling */
StringSource dumpSource { dump };
ChainSource bothSource { dumpSource, source };
auto tempDir = createTempDir(realStoreDir, "add");
delTempDir = std::make_unique<AutoDelete>(tempDir);
tempPath = tempDir + "/x";
if (method == FileIngestionMethod::Recursive)
restorePath(tempPath, bothSource);
else
writeFile(tempPath, bothSource);
dump.clear();
}
auto [hash, size] = hashSink->finish();
auto dstPath = makeFixedOutputPath(method, hash, name);
addTempRoot(dstPath); addTempRoot(dstPath);
@ -1044,8 +1106,7 @@ StorePath LocalStore::addToStoreFromDump(const string & dump, const string & nam
/* The first check above is an optimisation to prevent /* The first check above is an optimisation to prevent
unnecessary lock acquisition. */ unnecessary lock acquisition. */
Path realPath = realStoreDir + "/"; auto realPath = Store::toRealPath(dstPath);
realPath += dstPath.to_string();
PathLocks outputLock({realPath}); PathLocks outputLock({realPath});
@ -1055,31 +1116,36 @@ StorePath LocalStore::addToStoreFromDump(const string & dump, const string & nam
autoGC(); autoGC();
if (method == FileIngestionMethod::Recursive) { if (inMemory) {
StringSource source(dump); StringSource dumpSource { dump };
restorePath(realPath, source); /* Restore from the NAR in memory. */
} else if (method == FileIngestionMethod::Recursive)
writeFile(realPath, dump); restorePath(realPath, dumpSource);
else
writeFile(realPath, dumpSource);
} else {
/* Move the temporary path we restored above. */
if (rename(tempPath.c_str(), realPath.c_str()))
throw Error("renaming '%s' to '%s'", tempPath, realPath);
}
canonicalisePathMetaData(realPath, -1); /* For computing the nar hash. In recursive SHA-256 mode, this
is the same as the store hash, so no need to do it again. */
auto narHash = std::pair { hash, size };
if (method != FileIngestionMethod::Recursive || hashAlgo != htSHA256) {
HashSink narSink { htSHA256 };
dumpPath(realPath, narSink);
narHash = narSink.finish();
}
/* Register the SHA-256 hash of the NAR serialisation of canonicalisePathMetaData(realPath, -1); // FIXME: merge into restorePath
the path in the database. We may just have computed it
above (if called with recursive == true and hashAlgo ==
sha256); otherwise, compute it here. */
HashResult hash;
if (method == FileIngestionMethod::Recursive) {
hash.first = hashAlgo == htSHA256 ? h : hashString(htSHA256, dump);
hash.second = dump.size();
} else
hash = hashPath(htSHA256, realPath);
optimisePath(realPath); // FIXME: combine with hashPath() optimisePath(realPath);
ValidPathInfo info(dstPath); ValidPathInfo info(dstPath);
info.narHash = hash.first; info.narHash = narHash.first;
info.narSize = hash.second; info.narSize = narHash.second;
info.ca = FixedOutputHash { .method = method, .hash = h }; info.ca = FixedOutputHash { .method = method, .hash = hash };
registerValidPath(info); registerValidPath(info);
} }
@ -1090,24 +1156,6 @@ StorePath LocalStore::addToStoreFromDump(const string & dump, const string & nam
} }
StorePath LocalStore::addToStore(const string & name, const Path & _srcPath,
FileIngestionMethod method, HashType hashAlgo, PathFilter & filter, RepairFlag repair)
{
Path srcPath(absPath(_srcPath));
/* Read the whole path into memory. This is not a very scalable
method for very large paths, but `copyPath' is mainly used for
small files. */
StringSink sink;
if (method == FileIngestionMethod::Recursive)
dumpPath(srcPath, sink, filter);
else
sink.s = make_ref<std::string>(readFile(srcPath));
return addToStoreFromDump(*sink.s, name, method, hashAlgo, repair);
}
StorePath LocalStore::addTextToStore(const string & name, const string & s, StorePath LocalStore::addTextToStore(const string & name, const string & s,
const StorePathSet & references, RepairFlag repair) const StorePathSet & references, RepairFlag repair)
{ {
@ -1118,8 +1166,7 @@ StorePath LocalStore::addTextToStore(const string & name, const string & s,
if (repair || !isValidPath(dstPath)) { if (repair || !isValidPath(dstPath)) {
Path realPath = realStoreDir + "/"; auto realPath = Store::toRealPath(dstPath);
realPath += dstPath.to_string();
PathLocks outputLock({realPath}); PathLocks outputLock({realPath});
@ -1255,9 +1302,9 @@ bool LocalStore::verifyStore(bool checkContents, RepairFlag repair)
std::unique_ptr<AbstractHashSink> hashSink; std::unique_ptr<AbstractHashSink> hashSink;
if (!info->ca || !info->references.count(info->path)) if (!info->ca || !info->references.count(info->path))
hashSink = std::make_unique<HashSink>(*info->narHash.type); hashSink = std::make_unique<HashSink>(info->narHash->type);
else else
hashSink = std::make_unique<HashModuloSink>(*info->narHash.type, std::string(info->path.hashPart())); hashSink = std::make_unique<HashModuloSink>(info->narHash->type, std::string(info->path.hashPart()));
dumpPath(Store::toRealPath(i), *hashSink); dumpPath(Store::toRealPath(i), *hashSink);
auto current = hashSink->finish(); auto current = hashSink->finish();
@ -1266,7 +1313,7 @@ bool LocalStore::verifyStore(bool checkContents, RepairFlag repair)
logError({ logError({
.name = "Invalid hash - path modified", .name = "Invalid hash - path modified",
.hint = hintfmt("path '%s' was modified! expected hash '%s', got '%s'", .hint = hintfmt("path '%s' was modified! expected hash '%s', got '%s'",
printStorePath(i), info->narHash.to_string(Base32, true), current.first.to_string(Base32, true)) printStorePath(i), info->narHash->to_string(Base32, true), current.first.to_string(Base32, true))
}); });
if (repair) repairPath(i); else errors = true; if (repair) repairPath(i); else errors = true;
} else { } else {

View file

@ -29,8 +29,8 @@ struct Derivation;
struct OptimiseStats struct OptimiseStats
{ {
unsigned long filesLinked = 0; unsigned long filesLinked = 0;
unsigned long long bytesFreed = 0; uint64_t bytesFreed = 0;
unsigned long long blocksFreed = 0; uint64_t blocksFreed = 0;
}; };
@ -133,7 +133,7 @@ public:
StorePathSet queryValidDerivers(const StorePath & path) override; StorePathSet queryValidDerivers(const StorePath & path) override;
StorePathSet queryDerivationOutputs(const StorePath & path) override; OutputPathMap queryDerivationOutputMap(const StorePath & path) override;
std::optional<StorePath> queryPathFromHashPart(const std::string & hashPart) override; std::optional<StorePath> queryPathFromHashPart(const std::string & hashPart) override;
@ -143,8 +143,7 @@ public:
SubstitutablePathInfos & infos) override; SubstitutablePathInfos & infos) override;
void addToStore(const ValidPathInfo & info, Source & source, void addToStore(const ValidPathInfo & info, Source & source,
RepairFlag repair, CheckSigsFlag checkSigs, RepairFlag repair, CheckSigsFlag checkSigs) override;
std::shared_ptr<FSAccessor> accessor) override;
StorePath addToStore(const string & name, const Path & srcPath, StorePath addToStore(const string & name, const Path & srcPath,
FileIngestionMethod method, HashType hashAlgo, FileIngestionMethod method, HashType hashAlgo,
@ -154,7 +153,7 @@ public:
in `dump', which is either a NAR serialisation (if recursive == in `dump', which is either a NAR serialisation (if recursive ==
true) or simply the contents of a regular file (if recursive == true) or simply the contents of a regular file (if recursive ==
false). */ false). */
StorePath addToStoreFromDump(const string & dump, const string & name, StorePath addToStoreFromDump(Source & dump, const string & name,
FileIngestionMethod method = FileIngestionMethod::Recursive, HashType hashAlgo = htSHA256, RepairFlag repair = NoRepair) override; FileIngestionMethod method = FileIngestionMethod::Recursive, HashType hashAlgo = htSHA256, RepairFlag repair = NoRepair) override;
StorePath addTextToStore(const string & name, const string & s, StorePath addTextToStore(const string & name, const string & s,

View file

@ -61,3 +61,6 @@ $(d)/build.cc:
clean-files += $(d)/schema.sql.gen.hh clean-files += $(d)/schema.sql.gen.hh
$(eval $(call install-file-in, $(d)/nix-store.pc, $(prefix)/lib/pkgconfig, 0644)) $(eval $(call install-file-in, $(d)/nix-store.pc, $(prefix)/lib/pkgconfig, 0644))
$(foreach i, $(wildcard src/libstore/builtins/*.hh), \
$(eval $(call install-file-in, $(i), $(includedir)/nix/builtins, 0644)))

View file

@ -110,7 +110,7 @@ void Store::computeFSClosure(const StorePath & startPath,
void Store::queryMissing(const std::vector<StorePathWithOutputs> & targets, void Store::queryMissing(const std::vector<StorePathWithOutputs> & targets,
StorePathSet & willBuild_, StorePathSet & willSubstitute_, StorePathSet & unknown_, StorePathSet & willBuild_, StorePathSet & willSubstitute_, StorePathSet & unknown_,
unsigned long long & downloadSize_, unsigned long long & narSize_) uint64_t & downloadSize_, uint64_t & narSize_)
{ {
Activity act(*logger, lvlDebug, actUnknown, "querying info about missing paths"); Activity act(*logger, lvlDebug, actUnknown, "querying info about missing paths");
@ -122,8 +122,8 @@ void Store::queryMissing(const std::vector<StorePathWithOutputs> & targets,
{ {
std::unordered_set<std::string> done; std::unordered_set<std::string> done;
StorePathSet & unknown, & willSubstitute, & willBuild; StorePathSet & unknown, & willSubstitute, & willBuild;
unsigned long long & downloadSize; uint64_t & downloadSize;
unsigned long long & narSize; uint64_t & narSize;
}; };
struct DrvState struct DrvState
@ -198,8 +198,8 @@ void Store::queryMissing(const std::vector<StorePathWithOutputs> & targets,
PathSet invalid; PathSet invalid;
for (auto & j : drv->outputs) for (auto & j : drv->outputs)
if (wantOutput(j.first, path.outputs) if (wantOutput(j.first, path.outputs)
&& !isValidPath(j.second.path)) && !isValidPath(j.second.path(*this, drv->name)))
invalid.insert(printStorePath(j.second.path)); invalid.insert(printStorePath(j.second.path(*this, drv->name)));
if (invalid.empty()) return; if (invalid.empty()) return;
if (settings.useSubstitutes && parsedDrv.substitutesAllowed()) { if (settings.useSubstitutes && parsedDrv.substitutesAllowed()) {

View file

@ -18,7 +18,7 @@ struct NarMember
/* If this is a regular file, position of the contents of this /* If this is a regular file, position of the contents of this
file in the NAR. */ file in the NAR. */
size_t start = 0, size = 0; uint64_t start = 0, size = 0;
std::string target; std::string target;
@ -34,17 +34,19 @@ struct NarAccessor : public FSAccessor
NarMember root; NarMember root;
struct NarIndexer : ParseSink, StringSource struct NarIndexer : ParseSink, Source
{ {
NarAccessor & acc; NarAccessor & acc;
Source & source;
std::stack<NarMember *> parents; std::stack<NarMember *> parents;
std::string currentStart;
bool isExec = false; bool isExec = false;
NarIndexer(NarAccessor & acc, const std::string & nar) uint64_t pos = 0;
: StringSource(nar), acc(acc)
NarIndexer(NarAccessor & acc, Source & source)
: acc(acc), source(source)
{ } { }
void createMember(const Path & path, NarMember member) { void createMember(const Path & path, NarMember member) {
@ -77,33 +79,40 @@ struct NarAccessor : public FSAccessor
parents.top()->isExecutable = true; parents.top()->isExecutable = true;
} }
void preallocateContents(unsigned long long size) override void preallocateContents(uint64_t size) override
{ {
currentStart = string(s, pos, 16); assert(size <= std::numeric_limits<uint64_t>::max());
assert(size <= std::numeric_limits<size_t>::max()); parents.top()->size = (uint64_t) size;
parents.top()->size = (size_t)size;
parents.top()->start = pos; parents.top()->start = pos;
} }
void receiveContents(unsigned char * data, unsigned int len) override void receiveContents(unsigned char * data, size_t len) override
{ { }
// Sanity check
if (!currentStart.empty()) {
assert(len < 16 || currentStart == string((char *) data, 16));
currentStart.clear();
}
}
void createSymlink(const Path & path, const string & target) override void createSymlink(const Path & path, const string & target) override
{ {
createMember(path, createMember(path,
NarMember{FSAccessor::Type::tSymlink, false, 0, 0, target}); NarMember{FSAccessor::Type::tSymlink, false, 0, 0, target});
} }
size_t read(unsigned char * data, size_t len) override
{
auto n = source.read(data, len);
pos += n;
return n;
}
}; };
NarAccessor(ref<const std::string> nar) : nar(nar) NarAccessor(ref<const std::string> nar) : nar(nar)
{ {
NarIndexer indexer(*this, *nar); StringSource source(*nar);
NarIndexer indexer(*this, source);
parseDump(indexer, indexer);
}
NarAccessor(Source & source)
{
NarIndexer indexer(*this, source);
parseDump(indexer, indexer); parseDump(indexer, indexer);
} }
@ -219,6 +228,11 @@ ref<FSAccessor> makeNarAccessor(ref<const std::string> nar)
return make_ref<NarAccessor>(nar); return make_ref<NarAccessor>(nar);
} }
ref<FSAccessor> makeNarAccessor(Source & source)
{
return make_ref<NarAccessor>(source);
}
ref<FSAccessor> makeLazyNarAccessor(const std::string & listing, ref<FSAccessor> makeLazyNarAccessor(const std::string & listing,
GetNarBytes getNarBytes) GetNarBytes getNarBytes)
{ {

View file

@ -6,10 +6,14 @@
namespace nix { namespace nix {
struct Source;
/* Return an object that provides access to the contents of a NAR /* Return an object that provides access to the contents of a NAR
file. */ file. */
ref<FSAccessor> makeNarAccessor(ref<const std::string> nar); ref<FSAccessor> makeNarAccessor(ref<const std::string> nar);
ref<FSAccessor> makeNarAccessor(Source & source);
/* Create a NAR accessor from a NAR listing (in the format produced by /* Create a NAR accessor from a NAR listing (in the format produced by
listNar()). The callback getNarBytes(offset, length) is used by the listNar()). The callback getNarBytes(offset, length) is used by the
readFile() method of the accessor to get the contents of files readFile() method of the accessor to get the contents of files

View file

@ -230,9 +230,9 @@ public:
(std::string(info->path.name())) (std::string(info->path.name()))
(narInfo ? narInfo->url : "", narInfo != 0) (narInfo ? narInfo->url : "", narInfo != 0)
(narInfo ? narInfo->compression : "", narInfo != 0) (narInfo ? narInfo->compression : "", narInfo != 0)
(narInfo && narInfo->fileHash ? narInfo->fileHash.to_string(Base32, true) : "", narInfo && narInfo->fileHash) (narInfo && narInfo->fileHash ? narInfo->fileHash->to_string(Base32, true) : "", narInfo && narInfo->fileHash)
(narInfo ? narInfo->fileSize : 0, narInfo != 0 && narInfo->fileSize) (narInfo ? narInfo->fileSize : 0, narInfo != 0 && narInfo->fileSize)
(info->narHash.to_string(Base32, true)) (info->narHash->to_string(Base32, true))
(info->narSize) (info->narSize)
(concatStringsSep(" ", info->shortRefs())) (concatStringsSep(" ", info->shortRefs()))
(info->deriver ? std::string(info->deriver->to_string()) : "", (bool) info->deriver) (info->deriver ? std::string(info->deriver->to_string()) : "", (bool) info->deriver)

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