lix/flake.nix

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{
description = "The purely functional package manager";
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.11-small";
nixpkgs-regression.url = "github:NixOS/nixpkgs/215d4d0fd80ca5163643b03a33fde804a29cc1e2";
pre-commit-hooks = {
url = "github:cachix/git-hooks.nix";
inputs = {
flake-compat.follows = "flake-compat";
nixpkgs.follows = "nixpkgs";
nixpkgs-stable.follows = "nixpkgs";
};
};
flake-compat = {
url = "github:edolstra/flake-compat";
flake = false;
};
};
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outputs =
{
self,
nixpkgs,
nixpkgs-regression,
pre-commit-hooks,
flake-compat,
}:
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let
inherit (nixpkgs) lib;
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officialRelease = true;
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# Set to true to build the release notes for the next release.
buildUnreleasedNotes = false;
version = lib.fileContents ./.version + versionSuffix;
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versionSuffix =
if officialRelease then
""
else
"pre${
builtins.substring 0 8 (self.lastModifiedDate or self.lastModified or "19700101")
}_${self.shortRev or "dirty"}";
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linux32BitSystems = [ "i686-linux" ];
linux64BitSystems = [
"x86_64-linux"
"aarch64-linux"
];
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linuxSystems = linux32BitSystems ++ linux64BitSystems;
darwinSystems = [
"x86_64-darwin"
"aarch64-darwin"
];
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systems = linuxSystems ++ darwinSystems;
crossSystems = [
"armv6l-linux"
"armv7l-linux"
"x86_64-freebsd13"
"x86_64-netbsd"
];
stdenvs = [
"gccStdenv"
"clangStdenv"
"stdenv"
"libcxxStdenv"
"ccacheStdenv"
];
forAllSystems = lib.genAttrs systems;
forAllCrossSystems = lib.genAttrs crossSystems;
forAllStdenvs =
f:
lib.listToAttrs (
map (stdenvName: {
name = "${stdenvName}Packages";
value = f stdenvName;
}) stdenvs
);
# Memoize nixpkgs for different platforms for efficiency.
nixpkgsFor = forAllSystems (
system:
let
make-pkgs =
crossSystem: stdenv:
import nixpkgs {
localSystem = {
inherit system;
};
crossSystem =
if crossSystem == null then
null
else
{
system = crossSystem;
}
// lib.optionalAttrs (crossSystem == "x86_64-freebsd13") { useLLVM = true; };
overlays = [
(overlayFor (p: p.${stdenv}))
(final: prev: { nixfmt = final.callPackage ./nix-support/nixfmt.nix { }; })
];
config.permittedInsecurePackages = [ "nix-2.13.6" ];
};
stdenvs = forAllStdenvs (make-pkgs null);
native = stdenvs.stdenvPackages;
in
{
inherit stdenvs native;
static = native.pkgsStatic;
cross = forAllCrossSystems (crossSystem: make-pkgs crossSystem "stdenv");
}
);
binaryTarball =
nix: pkgs:
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let
inherit (pkgs) buildPackages;
installerClosureInfo = buildPackages.closureInfo { rootPaths = [ nix ]; };
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in
buildPackages.runCommand "nix-binary-tarball-${version}"
{
#nativeBuildInputs = lib.optional (system != "aarch64-linux") shellcheck;
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meta.description = "Distribution-independent Nix bootstrap binaries for ${pkgs.system}";
}
''
cp ${installerClosureInfo}/registration $TMPDIR/reginfo
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dir=nix-${version}-${pkgs.system}
fn=$out/$dir.tar.xz
mkdir -p $out/nix-support
echo "file binary-dist $fn" >> $out/nix-support/hydra-build-products
tar cvfJ $fn \
--owner=0 --group=0 --mode=u+rw,uga+r \
--mtime='1970-01-01' \
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--absolute-names \
--hard-dereference \
--transform "s,$TMPDIR/reginfo,$dir/.reginfo," \
--transform "s,$NIX_STORE,$dir/store,S" \
$TMPDIR/reginfo \
$(cat ${installerClosureInfo}/store-paths)
'';
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overlayFor =
getStdenv: final: prev:
let
currentStdenv = getStdenv final;
in
{
nixStable = prev.nix;
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# Forward from the previous stage as we dont want it to pick the lowdown override
nixUnstable = prev.nixUnstable;
build-release-notes = final.buildPackages.callPackage ./maintainers/build-release-notes.nix { };
clangbuildanalyzer = final.buildPackages.callPackage ./misc/clangbuildanalyzer.nix { };
default-busybox-sandbox-shell = final.busybox.override {
useMusl = true;
enableStatic = true;
enableMinimal = true;
extraConfig = ''
CONFIG_FEATURE_FANCY_ECHO y
CONFIG_FEATURE_SH_MATH y
CONFIG_FEATURE_SH_MATH_64 y
CONFIG_ASH y
CONFIG_ASH_OPTIMIZE_FOR_SIZE y
CONFIG_ASH_ALIAS y
CONFIG_ASH_BASH_COMPAT y
CONFIG_ASH_CMDCMD y
CONFIG_ASH_ECHO y
CONFIG_ASH_GETOPTS y
CONFIG_ASH_INTERNAL_GLOB y
CONFIG_ASH_JOB_CONTROL y
CONFIG_ASH_PRINTF y
CONFIG_ASH_TEST y
'';
};
nix = final.callPackage ./package.nix {
inherit versionSuffix;
stdenv = currentStdenv;
busybox-sandbox-shell = final.busybox-sandbox-shell or final.default-busybox-sandbox-shell;
};
# Export the patched version of boehmgc that Lix uses into the overlay
# for consumers of this flake.
boehmgc-nix = final.nix.boehmgc-nix;
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};
in
{
# A Nixpkgs overlay that overrides the 'nix' and
# 'nix.perl-bindings' packages.
overlays.default = overlayFor (p: p.stdenv);
hydraJobs = {
# Binary package for various platforms.
build = forAllSystems (system: self.packages.${system}.nix);
rl-next = forAllSystems (
system:
let
rl-next-check =
name: dir:
let
pkgs = nixpkgsFor.${system}.native;
in
pkgs.buildPackages.runCommand "test-${name}-release-notes" { } ''
LANG=C.UTF-8 ${lib.getExe pkgs.build-release-notes} ${dir} >$out
'';
in
{
user = rl-next-check "rl-next" ./doc/manual/rl-next;
dev = rl-next-check "rl-next-dev" ./doc/manual/rl-next-dev;
}
);
# FIXME(Qyriad): remove this when the migration to Meson has been completed.
# NOTE: mesonBuildClang depends on mesonBuild depends on build to avoid OOMs
# on aarch64 builders caused by too many parallel compiler/linker processes.
mesonBuild = forAllSystems (
system:
(self.packages.${system}.nix.override { buildWithMeson = true; }).overrideAttrs (prev: {
buildInputs = prev.buildInputs ++ [ self.packages.${system}.nix ];
})
);
mesonBuildClang = forAllSystems (
system:
(nixpkgsFor.${system}.stdenvs.clangStdenvPackages.nix.override { buildWithMeson = true; })
.overrideAttrs
(prev: {
buildInputs = prev.buildInputs ++ [ self.hydraJobs.mesonBuild.${system} ];
})
);
# Perl bindings for various platforms.
perlBindings = forAllSystems (system: nixpkgsFor.${system}.native.nix.perl-bindings);
# Binary tarball for various platforms, containing a Nix store
# with the closure of 'nix' package.
binaryTarball = forAllSystems (
system: binaryTarball nixpkgsFor.${system}.native.nix nixpkgsFor.${system}.native
);
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# docker image with Nix inside
dockerImage = lib.genAttrs linux64BitSystems (system: self.packages.${system}.dockerImage);
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# API docs for Nix's unstable internal C++ interfaces.
internal-api-docs =
let
nixpkgs = nixpkgsFor.x86_64-linux.native;
inherit (nixpkgs) pkgs;
nix = pkgs.callPackage ./package.nix {
inherit versionSuffix officialRelease buildUnreleasedNotes;
inherit (pkgs) build-release-notes;
internalApiDocs = true;
busybox-sandbox-shell = pkgs.busybox-sandbox-shell;
};
in
nix.overrideAttrs (prev: {
# This Hydra job is just for the internal API docs.
# We don't need the build artifacts here.
dontBuild = true;
doCheck = false;
doInstallCheck = false;
});
# System tests.
tests = import ./tests/nixos { inherit lib nixpkgs nixpkgsFor; } // {
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# Make sure that nix-env still produces the exact same result
# on a particular version of Nixpkgs.
evalNixpkgs =
with nixpkgsFor.x86_64-linux.native;
runCommand "eval-nixos" { buildInputs = [ nix ]; } ''
type -p nix-env
# Note: we're filtering out nixos-install-tools because https://github.com/NixOS/nixpkgs/pull/153594#issuecomment-1020530593.
time nix-env --store dummy:// -f ${nixpkgs-regression} -qaP --drv-path | sort | grep -v nixos-install-tools > packages
[[ $(sha1sum < packages | cut -c1-40) = 402242fca90874112b34718b8199d844e8b03d12 ]]
mkdir $out
'';
nixpkgsLibTests = forAllSystems (
system:
import (nixpkgs + "/lib/tests/release.nix") {
pkgs = nixpkgsFor.${system}.native;
nixVersions = [ self.packages.${system}.nix ];
}
);
};
pre-commit = builtins.mapAttrs (
system: pre-commit-lib:
pre-commit-lib.run {
src = self;
hooks = {
no-commit-to-branch = {
enable = true;
settings.branch = [ "main" ];
};
check-case-conflicts.enable = true;
check-executables-have-shebangs = {
enable = true;
stages = [ "commit" ];
};
check-shebang-scripts-are-executable = {
enable = true;
stages = [ "commit" ];
};
check-symlinks = {
enable = true;
excludes = [ "^tests/functional/lang/symlink-resolution/broken$" ];
};
check-merge-conflicts.enable = true;
end-of-file-fixer = {
enable = true;
excludes = [
"\\.drv$"
"^tests/functional/lang/"
];
};
mixed-line-endings = {
enable = true;
excludes = [ "^tests/functional/lang/" ];
};
# TODO: Once the test suite is nicer, clean up and start
# enforcing trailing whitespace on tests that don't explicitly
# check for it.
trim-trailing-whitespace = {
enable = true;
stages = [ "commit" ];
excludes = [ "^tests/functional/lang/" ];
};
treefmt = {
enable = true;
settings.formatters =
let
pkgs = nixpkgsFor.${system}.native;
in
[ pkgs.nixfmt ];
};
};
}
) pre-commit-hooks.lib;
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};
# NOTE *do not* add fresh derivations to checks, always add them to
# hydraJobs first (so CI will pick them up) and only link them here
checks = forAllSystems (
system:
{
# FIXME(Qyriad): remove this when the migration to Meson has been completed.
mesonBuild = self.hydraJobs.mesonBuild.${system};
mesonBuildClang = self.hydraJobs.mesonBuildClang.${system};
binaryTarball = self.hydraJobs.binaryTarball.${system};
perlBindings = self.hydraJobs.perlBindings.${system};
nixpkgsLibTests = self.hydraJobs.tests.nixpkgsLibTests.${system};
rl-next = self.hydraJobs.rl-next.${system}.user;
rl-next-dev = self.hydraJobs.rl-next.${system}.dev;
pre-commit = self.hydraJobs.pre-commit.${system};
}
// (lib.optionalAttrs (builtins.elem system linux64BitSystems)) {
dockerImage = self.hydraJobs.dockerImage.${system};
}
);
packages = forAllSystems (
system:
rec {
inherit (nixpkgsFor.${system}.native) nix;
default = nix;
}
// (
lib.optionalAttrs (builtins.elem system linux64BitSystems) {
nix-static = nixpkgsFor.${system}.static.nix;
dockerImage =
let
pkgs = nixpkgsFor.${system}.native;
image = import ./docker.nix {
inherit pkgs;
tag = version;
};
in
pkgs.runCommand "docker-image-tarball-${version}"
{ meta.description = "Docker image with Nix for ${system}"; }
''
mkdir -p $out/nix-support
image=$out/image.tar.gz
ln -s ${image} $image
echo "file binary-dist $image" >> $out/nix-support/hydra-build-products
'';
}
// builtins.listToAttrs (
map (crossSystem: {
name = "nix-${crossSystem}";
value = nixpkgsFor.${system}.cross.${crossSystem}.nix;
}) crossSystems
)
// builtins.listToAttrs (
map (stdenvName: {
name = "nix-${stdenvName}";
value = nixpkgsFor.${system}.stdenvs."${stdenvName}Packages".nix;
}) stdenvs
)
)
);
devShells =
let
makeShell =
pkgs: stdenv:
let
nix = pkgs.callPackage ./package.nix {
inherit stdenv versionSuffix;
busybox-sandbox-shell = pkgs.busybox-sandbox-shell or pkgs.default-busybox-sandbox;
forDevShell = true;
};
pre-commit = self.hydraJobs.pre-commit.${pkgs.system} or { };
in
(nix.override {
buildUnreleasedNotes = true;
officialRelease = false;
}).overrideAttrs
(
prev:
{
# Required for clang-tidy checks
buildInputs =
prev.buildInputs
++ [
pkgs.just
pkgs.nixfmt
]
++ lib.optional (pre-commit ? enabledPackages) pre-commit.enabledPackages
++ lib.optionals (stdenv.cc.isClang) [
pkgs.llvmPackages.llvm
pkgs.llvmPackages.clang-unwrapped.dev
];
nativeBuildInputs =
prev.nativeBuildInputs
++ lib.optional (stdenv.cc.isClang && !stdenv.buildPlatform.isDarwin) pkgs.buildPackages.bear
# Required for clang-tidy checks
++ lib.optionals (stdenv.cc.isClang) [
pkgs.buildPackages.cmake
pkgs.buildPackages.ninja
pkgs.buildPackages.llvmPackages.llvm.dev
]
++
lib.optional (stdenv.cc.isClang && stdenv.hostPlatform == stdenv.buildPlatform)
# for some reason that seems accidental and was changed in
# NixOS 24.05-pre, clang-tools is pinned to LLVM 14 when
# default LLVM is newer.
(pkgs.buildPackages.clang-tools.override { inherit (pkgs.buildPackages) llvmPackages; })
++ [
# FIXME(Qyriad): remove once the migration to Meson is complete.
pkgs.buildPackages.meson
pkgs.buildPackages.ninja
pkgs.buildPackages.cmake
pkgs.buildPackages.clangbuildanalyzer
];
src = null;
installFlags = "sysconfdir=$(out)/etc";
strictDeps = false;
shellHook = ''
PATH=$prefix/bin:$PATH
unset PYTHONPATH
export MANPATH=$out/share/man:$MANPATH
# Make bash completion work.
XDG_DATA_DIRS+=:$out/share
${lib.optionalString (pre-commit ? shellHook) pre-commit.shellHook}
'';
}
// lib.optionalAttrs (stdenv.buildPlatform.isLinux && pkgs.glibcLocales != null) {
# Required to make non-NixOS Linux not complain about missing locale files during configure in a dev shell
LOCALE_ARCHIVE = "${lib.getLib pkgs.glibcLocales}/lib/locale/locale-archive";
}
);
in
forAllSystems (
system:
let
makeShells =
prefix: pkgs:
lib.mapAttrs' (k: v: lib.nameValuePair "${prefix}-${k}" v) (
forAllStdenvs (stdenvName: makeShell pkgs pkgs.${stdenvName})
);
in
(makeShells "native" nixpkgsFor.${system}.native)
// (makeShells "static" nixpkgsFor.${system}.static)
// (forAllCrossSystems (
crossSystem:
let
pkgs = nixpkgsFor.${system}.cross.${crossSystem};
in
makeShell pkgs pkgs.stdenv
))
// {
default = self.devShells.${system}.native-stdenvPackages;
}
);
};
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}