7d38060a0d
A command like
$ nix run nixpkgs#hello
will now build the attribute 'packages.${system}.hello' rather than
'packages.hello'. Note that this does mean that the flake needs to
export an attribute for every system type it supports, and you can't
build on unsupported systems. So 'packages' typically looks like this:
packages = nixpkgs.lib.genAttrs ["x86_64-linux" "i686-linux"] (system: {
hello = ...;
});
The 'checks', 'defaultPackage', 'devShell', 'apps' and 'defaultApp'
outputs similarly are now attrsets that map system types to
derivations/apps. 'nix flake check' checks that the derivations for
all platforms evaluate correctly, but only builds the derivations in
'checks.${system}'.
Fixes #2861. (That issue also talks about access to ~/.config/nixpkgs
and --arg, but I think it's reasonable to say that flakes shouldn't
support those.)
The alternative to attribute selection is to pass the system type as
an argument to the flake's 'outputs' function, e.g. 'outputs = { self,
nixpkgs, system }: ...'. However, that approach would be at odds with
hermetic evaluation and make it impossible to enumerate the packages
provided by a flake.
470 lines
16 KiB
Nix
470 lines
16 KiB
Nix
{
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description = "The purely functional package manager";
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edition = 201909;
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inputs.nixpkgs.uri = "nixpkgs/release-19.03";
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outputs = { self, nixpkgs }:
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let
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officialRelease = false;
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systems = [ "x86_64-linux" "i686-linux" "x86_64-darwin" "aarch64-linux" ];
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forAllSystems = f: nixpkgs.lib.genAttrs systems (system: f system);
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# Memoize nixpkgs for different platforms for efficiency.
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nixpkgsFor = forAllSystems (system:
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import nixpkgs {
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inherit system;
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overlays = [ self.overlay ];
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}
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);
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commonDeps = pkgs: with pkgs; rec {
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# Use "busybox-sandbox-shell" if present,
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# if not (legacy) fallback and hope it's sufficient.
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sh = pkgs.busybox-sandbox-shell or (busybox.override {
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useMusl = true;
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enableStatic = true;
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enableMinimal = true;
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extraConfig = ''
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CONFIG_FEATURE_FANCY_ECHO y
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CONFIG_FEATURE_SH_MATH y
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CONFIG_FEATURE_SH_MATH_64 y
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CONFIG_ASH y
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CONFIG_ASH_OPTIMIZE_FOR_SIZE y
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CONFIG_ASH_ALIAS y
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CONFIG_ASH_BASH_COMPAT y
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CONFIG_ASH_CMDCMD y
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CONFIG_ASH_ECHO y
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CONFIG_ASH_GETOPTS y
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CONFIG_ASH_INTERNAL_GLOB y
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CONFIG_ASH_JOB_CONTROL y
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CONFIG_ASH_PRINTF y
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CONFIG_ASH_TEST y
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'';
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});
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configureFlags =
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[
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"--enable-gc"
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] ++ lib.optionals stdenv.isLinux [
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"--with-sandbox-shell=${sh}/bin/busybox"
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];
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tarballDeps =
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[ bison
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flex
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libxml2
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libxslt
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docbook5
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docbook_xsl_ns
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autoconf-archive
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autoreconfHook
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];
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buildDeps =
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[ curl
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bzip2 xz brotli editline
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openssl pkgconfig sqlite boehmgc
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boost
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# Tests
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git
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mercurial
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jq
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]
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++ lib.optionals stdenv.isLinux [libseccomp utillinuxMinimal]
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++ lib.optional (stdenv.isLinux || stdenv.isDarwin) libsodium
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++ lib.optional (stdenv.isLinux || stdenv.isDarwin)
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(aws-sdk-cpp.override {
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apis = ["s3" "transfer"];
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customMemoryManagement = false;
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});
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perlDeps =
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[ perl
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perlPackages.DBDSQLite
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];
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};
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in {
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# A Nixpkgs overlay that overrides the 'nix' and
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# 'nix.perl-bindings' packages.
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overlay = final: prev: {
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nix = with final; with commonDeps pkgs; (releaseTools.nixBuild {
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name = "nix";
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src = self.hydraJobs.tarball;
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outputs = [ "out" "dev" ];
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buildInputs = buildDeps;
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preConfigure =
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# Copy libboost_context so we don't get all of Boost in our closure.
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# https://github.com/NixOS/nixpkgs/issues/45462
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''
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mkdir -p $out/lib
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cp -pd ${boost}/lib/{libboost_context*,libboost_thread*,libboost_system*} $out/lib
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rm -f $out/lib/*.a
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${lib.optionalString stdenv.isLinux ''
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chmod u+w $out/lib/*.so.*
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patchelf --set-rpath $out/lib:${stdenv.cc.cc.lib}/lib $out/lib/libboost_thread.so.*
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''}
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'';
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configureFlags = configureFlags ++
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[ "--sysconfdir=/etc" ];
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enableParallelBuilding = true;
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makeFlags = "profiledir=$(out)/etc/profile.d";
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installFlags = "sysconfdir=$(out)/etc";
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doInstallCheck = true;
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installCheckFlags = "sysconfdir=$(out)/etc";
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}) // {
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perl-bindings = with final; releaseTools.nixBuild {
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name = "nix-perl";
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src = self.hydraJobs.tarball;
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buildInputs =
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[ nix curl bzip2 xz pkgconfig pkgs.perl boost ]
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++ lib.optional (stdenv.isLinux || stdenv.isDarwin) libsodium;
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configureFlags = ''
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--with-dbi=${perlPackages.DBI}/${pkgs.perl.libPrefix}
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--with-dbd-sqlite=${perlPackages.DBDSQLite}/${pkgs.perl.libPrefix}
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'';
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enableParallelBuilding = true;
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postUnpack = "sourceRoot=$sourceRoot/perl";
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};
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};
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};
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hydraJobs = {
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# Source tarball.
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tarball =
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with nixpkgsFor.x86_64-linux;
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with commonDeps pkgs;
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releaseTools.sourceTarball {
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name = "nix-tarball";
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version = builtins.readFile ./.version;
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versionSuffix = if officialRelease then "" else
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"pre${builtins.substring 0 8 self.lastModified}_${self.shortRev}";
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src = self;
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inherit officialRelease;
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buildInputs = tarballDeps ++ buildDeps;
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configureFlags = "--enable-gc";
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postUnpack = ''
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(cd $sourceRoot && find . -type f) | cut -c3- > $sourceRoot/.dist-files
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cat $sourceRoot/.dist-files
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'';
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preConfigure = ''
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(cd perl ; autoreconf --install --force --verbose)
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# TeX needs a writable font cache.
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export VARTEXFONTS=$TMPDIR/texfonts
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'';
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distPhase =
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''
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runHook preDist
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make dist
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mkdir -p $out/tarballs
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cp *.tar.* $out/tarballs
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'';
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preDist = ''
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make install docdir=$out/share/doc/nix makefiles=doc/manual/local.mk
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echo "doc manual $out/share/doc/nix/manual" >> $out/nix-support/hydra-build-products
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'';
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};
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# Binary package for various platforms.
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build = nixpkgs.lib.genAttrs systems (system: nixpkgsFor.${system}.nix);
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# Perl bindings for various platforms.
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perlBindings = nixpkgs.lib.genAttrs systems (system: nixpkgsFor.${system}.nix.perl-bindings);
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# Binary tarball for various platforms, containing a Nix store
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# with the closure of 'nix' package, and the second half of
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# the installation script.
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binaryTarball = nixpkgs.lib.genAttrs systems (system:
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with nixpkgsFor.${system};
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let
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version = nix.src.version;
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installerClosureInfo = closureInfo { rootPaths = [ nix cacert ]; };
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in
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runCommand "nix-binary-tarball-${version}"
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{ nativeBuildInputs = lib.optional (system != "aarch64-linux") shellcheck;
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meta.description = "Distribution-independent Nix bootstrap binaries for ${system}";
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}
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''
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cp ${installerClosureInfo}/registration $TMPDIR/reginfo
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substitute ${./scripts/install-nix-from-closure.sh} $TMPDIR/install \
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--subst-var-by nix ${nix} \
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--subst-var-by cacert ${cacert}
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substitute ${./scripts/install-darwin-multi-user.sh} $TMPDIR/install-darwin-multi-user.sh \
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--subst-var-by nix ${nix} \
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--subst-var-by cacert ${cacert}
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substitute ${./scripts/install-systemd-multi-user.sh} $TMPDIR/install-systemd-multi-user.sh \
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--subst-var-by nix ${nix} \
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--subst-var-by cacert ${cacert}
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substitute ${./scripts/install-multi-user.sh} $TMPDIR/install-multi-user \
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--subst-var-by nix ${nix} \
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--subst-var-by cacert ${cacert}
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if type -p shellcheck; then
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# SC1090: Don't worry about not being able to find
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# $nix/etc/profile.d/nix.sh
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shellcheck --exclude SC1090 $TMPDIR/install
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shellcheck $TMPDIR/install-darwin-multi-user.sh
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shellcheck $TMPDIR/install-systemd-multi-user.sh
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# SC1091: Don't panic about not being able to source
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# /etc/profile
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# SC2002: Ignore "useless cat" "error", when loading
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# .reginfo, as the cat is a much cleaner
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# implementation, even though it is "useless"
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# SC2116: Allow ROOT_HOME=$(echo ~root) for resolving
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# root's home directory
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shellcheck --external-sources \
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--exclude SC1091,SC2002,SC2116 $TMPDIR/install-multi-user
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fi
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chmod +x $TMPDIR/install
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chmod +x $TMPDIR/install-darwin-multi-user.sh
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chmod +x $TMPDIR/install-systemd-multi-user.sh
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chmod +x $TMPDIR/install-multi-user
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dir=nix-${version}-${system}
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fn=$out/$dir.tar.xz
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mkdir -p $out/nix-support
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echo "file binary-dist $fn" >> $out/nix-support/hydra-build-products
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tar cvfJ $fn \
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--owner=0 --group=0 --mode=u+rw,uga+r \
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--absolute-names \
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--hard-dereference \
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--transform "s,$TMPDIR/install,$dir/install," \
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--transform "s,$TMPDIR/reginfo,$dir/.reginfo," \
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--transform "s,$NIX_STORE,$dir/store,S" \
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$TMPDIR/install $TMPDIR/install-darwin-multi-user.sh \
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$TMPDIR/install-systemd-multi-user.sh \
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$TMPDIR/install-multi-user $TMPDIR/reginfo \
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$(cat ${installerClosureInfo}/store-paths)
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'');
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# The first half of the installation script. This is uploaded
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# to https://nixos.org/nix/install. It downloads the binary
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# tarball for the user's system and calls the second half of the
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# installation script.
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installerScript =
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with nixpkgsFor.x86_64-linux;
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runCommand "installer-script"
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{ buildInputs = [ nix ];
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}
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''
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mkdir -p $out/nix-support
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substitute ${./scripts/install.in} $out/install \
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${pkgs.lib.concatMapStrings
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(system: "--replace '@binaryTarball_${system}@' $(nix hash-file --base16 --type sha256 ${self.hydraJobs.binaryTarball.${system}}/*.tar.xz) ")
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[ "x86_64-linux" "i686-linux" "x86_64-darwin" "aarch64-linux" ]
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} \
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--replace '@nixVersion@' ${nix.src.version}
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echo "file installer $out/install" >> $out/nix-support/hydra-build-products
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'';
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# Line coverage analysis.
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coverage =
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with nixpkgsFor.x86_64-linux;
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with commonDeps pkgs;
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releaseTools.coverageAnalysis {
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name = "nix-build";
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src = self.hydraJobs.tarball;
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buildInputs = buildDeps;
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dontInstall = false;
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doInstallCheck = true;
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lcovFilter = [ "*/boost/*" "*-tab.*" "*/nlohmann/*" "*/linenoise/*" ];
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# We call `dot', and even though we just use it to
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# syntax-check generated dot files, it still requires some
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# fonts. So provide those.
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FONTCONFIG_FILE = texFunctions.fontsConf;
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};
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# System tests.
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tests.remoteBuilds = import ./tests/remote-builds.nix {
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system = "x86_64-linux";
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inherit nixpkgs;
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inherit (self) overlay;
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};
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tests.nix-copy-closure = import ./tests/nix-copy-closure.nix {
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system = "x86_64-linux";
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inherit nixpkgs;
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inherit (self) overlay;
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};
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tests.githubFlakes = (import ./tests/github-flakes.nix rec {
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system = "x86_64-linux";
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inherit nixpkgs;
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inherit (self) overlay;
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});
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tests.setuid = nixpkgs.lib.genAttrs
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["i686-linux" "x86_64-linux"]
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(system:
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import ./tests/setuid.nix rec {
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inherit nixpkgs system;
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inherit (self) overlay;
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});
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# Test whether the binary tarball works in an Ubuntu system.
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tests.binaryTarball =
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with nixpkgsFor.x86_64-linux;
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vmTools.runInLinuxImage (runCommand "nix-binary-tarball-test"
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{ diskImage = vmTools.diskImages.ubuntu1204x86_64;
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}
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''
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set -x
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useradd -m alice
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su - alice -c 'tar xf ${self.hydraJobs.binaryTarball.x86_64-linux}/*.tar.*'
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mkdir /dest-nix
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mount -o bind /dest-nix /nix # Provide a writable /nix.
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chown alice /nix
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su - alice -c '_NIX_INSTALLER_TEST=1 ./nix-*/install'
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su - alice -c 'nix-store --verify'
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su - alice -c 'PAGER= nix-store -qR ${self.hydraJobs.build.x86_64-linux}'
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# Check whether 'nix upgrade-nix' works.
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cat > /tmp/paths.nix <<EOF
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{
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x86_64-linux = "${self.hydraJobs.build.x86_64-linux}";
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}
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EOF
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su - alice -c 'nix upgrade-nix -vvv --nix-store-paths-url file:///tmp/paths.nix'
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(! [ -L /home/alice/.profile-1-link ])
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su - alice -c 'PAGER= nix-store -qR ${self.hydraJobs.build.x86_64-linux}'
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mkdir -p $out/nix-support
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touch $out/nix-support/hydra-build-products
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umount /nix
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'');
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# Check whether we can still evaluate all of Nixpkgs.
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tests.evalNixpkgs =
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import (nixpkgs + "/pkgs/top-level/make-tarball.nix") {
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# FIXME: fix pkgs/top-level/make-tarball.nix in NixOS to not require a revCount.
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inherit nixpkgs;
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pkgs = nixpkgsFor.x86_64-linux;
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officialRelease = false;
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};
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# Check whether we can still evaluate NixOS.
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tests.evalNixOS =
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with nixpkgsFor.x86_64-linux;
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runCommand "eval-nixos" { buildInputs = [ nix ]; }
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''
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export NIX_STATE_DIR=$TMPDIR
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nix-instantiate ${nixpkgs}/nixos/release-combined.nix -A tested --dry-run \
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--arg nixpkgs '{ outPath = ${nixpkgs}; revCount = 123; shortRev = "abcdefgh"; }'
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touch $out
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'';
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# Aggregate job containing the release-critical jobs.
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release =
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with self.hydraJobs;
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nixpkgsFor.x86_64-linux.releaseTools.aggregate {
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name = "nix-${tarball.version}";
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meta.description = "Release-critical builds";
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constituents =
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[ tarball
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build.i686-linux
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build.x86_64-darwin
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build.x86_64-linux
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build.aarch64-linux
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binaryTarball.i686-linux
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binaryTarball.x86_64-darwin
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binaryTarball.x86_64-linux
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binaryTarball.aarch64-linux
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tests.remoteBuilds
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tests.nix-copy-closure
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tests.binaryTarball
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tests.evalNixpkgs
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tests.evalNixOS
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installerScript
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];
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};
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|
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};
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checks = forAllSystems (system: {
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binaryTarball = self.hydraJobs.binaryTarball.${system};
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perlBindings = self.hydraJobs.perlBindings.${system};
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|
});
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packages = forAllSystems (system: {
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inherit (nixpkgsFor.${system}) nix;
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|
});
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defaultPackage = forAllSystems (system: self.packages.${system}.nix);
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|
|
devShell = forAllSystems (system:
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with nixpkgsFor.${system};
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|
with commonDeps pkgs;
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|
|
stdenv.mkDerivation {
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|
name = "nix";
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|
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buildInputs = buildDeps ++ tarballDeps ++ perlDeps;
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|
|
inherit configureFlags;
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|
enableParallelBuilding = true;
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|
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installFlags = "sysconfdir=$(out)/etc";
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|
|
shellHook =
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|
''
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|
export prefix=$(pwd)/inst
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|
configureFlags+=" --prefix=$prefix"
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|
PKG_CONFIG_PATH=$prefix/lib/pkgconfig:$PKG_CONFIG_PATH
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|
PATH=$prefix/bin:$PATH
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|
unset PYTHONPATH
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|
'';
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|
});
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|
|
};
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|
}
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