b913a939b0
This commit makes Meson the default buildsystem for Lix.
The Make buildsystem is now deprecated and will be removed soon, but has
not yet, which will be done in a later commit when all seems good. The
mesonBuild jobs have been removed, and have not been replaced with
equivalent jobs to ensure the Make buildsystem still works.
The full, new commands in a development shell are:
$ meson setup ./build "--prefix=$out" $mesonFlags
(A simple `meson setup ./build` will also build, but will do a different
thing, not having the settings from package.nix applied.)
$ meson compile -C build
$ meson test -C build --suite=check
$ meson install -C build
$ meson test -C build --suite=installcheck
(Check and installcheck may both be done after install, allowing you to
omit the --suite argument entirely, but this is the order package.nix
runs them in.)
If tests fail and Meson helpfully has no output for why, use the
`--print-error-logs` option to `meson test`. Why this is not the default
I cannot explain.
If you change a setting in the buildsystem, most cases will
automatically regenerate the Meson configuration, but some cases, like
trying to build a specific target whose name is new to the buildsystem
(e.g. `meson compile -C build src/libmelt/libmelt.dylib`, when
`libmelt.dylib` did not exist as a target the last time the buildsystem
was generated), then you can reconfigure using new settings but
existing options, and only recompiling stuff affected by the changes:
$ meson setup --reconfigure build
Note that changes to the default values in `meson.options` or in the
`default_options :` argument to project() are NOT propagated with
`--reconfigure`.
If you want a totally clean build, you can use:
$ meson setup --wipe build
That will work regardless of if `./build` exists or not.
Specific, named targets may be addressed in
`meson build -C build <target>` with the "target ID" if there is one,
which is the first string argument passed to target functions that
have one, and unrelated to the variable name, e.g.:
libexpr_dylib = library('nixexpr', …)
can be addressed with:
$ meson compile -C build nixexpr
All targets may be addressed as their output, relative to the build
directory, e.g.:
$ meson compile -C build src/libexpr/libnixexpr.so
But Meson does not consider intermediate files like object files
targets. To build a specific object file, use Ninja directly and
specify the output file relative to the build directory:
$ ninja -C build src/libexpr/libnixexpr.so.p/nixexpr.cc.o
To inspect the canonical source of truth on what the state of the
buildsystem configuration is, use:
$ meson introspect
Have fun!
Change-Id: Ia3e7b1e6fae26daf3162e655b4ded611a5cd57ad
504 lines
17 KiB
Nix
504 lines
17 KiB
Nix
{
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description = "The purely functional package manager";
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inputs = {
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nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.11-small";
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nixpkgs-regression.url = "github:NixOS/nixpkgs/215d4d0fd80ca5163643b03a33fde804a29cc1e2";
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pre-commit-hooks = {
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url = "github:cachix/git-hooks.nix";
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flake = false;
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};
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flake-compat = {
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url = "github:edolstra/flake-compat";
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flake = false;
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};
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};
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outputs =
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{
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self,
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nixpkgs,
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nixpkgs-regression,
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pre-commit-hooks,
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flake-compat,
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}:
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let
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inherit (nixpkgs) lib;
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officialRelease = false;
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# Set to true to build the release notes for the next release.
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buildUnreleasedNotes = false;
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version = lib.fileContents ./.version + versionSuffix;
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versionSuffix =
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if officialRelease then
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""
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else
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"pre${
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builtins.substring 0 8 (self.lastModifiedDate or self.lastModified or "19700101")
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}_${self.shortRev or "dirty"}";
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linux32BitSystems = [ "i686-linux" ];
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linux64BitSystems = [
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"x86_64-linux"
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"aarch64-linux"
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];
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linuxSystems = linux32BitSystems ++ linux64BitSystems;
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darwinSystems = [
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"x86_64-darwin"
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"aarch64-darwin"
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];
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systems = linuxSystems ++ darwinSystems;
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crossSystems = [
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"armv6l-linux"
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"armv7l-linux"
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"x86_64-freebsd13"
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"x86_64-netbsd"
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];
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stdenvs = [
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"gccStdenv"
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"clangStdenv"
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"stdenv"
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"libcxxStdenv"
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"ccacheStdenv"
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];
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forAllSystems = lib.genAttrs systems;
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forAllCrossSystems = lib.genAttrs crossSystems;
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forAllStdenvs =
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f:
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lib.listToAttrs (
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map (stdenvName: {
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name = "${stdenvName}Packages";
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value = f stdenvName;
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}) stdenvs
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);
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# Memoize nixpkgs for different platforms for efficiency.
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nixpkgsFor = forAllSystems (
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system:
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let
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make-pkgs =
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crossSystem: stdenv:
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import nixpkgs {
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localSystem = {
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inherit system;
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};
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crossSystem =
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if crossSystem == null then
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null
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else
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{
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system = crossSystem;
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}
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// lib.optionalAttrs (crossSystem == "x86_64-freebsd13") { useLLVM = true; };
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overlays = [
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(overlayFor (p: p.${stdenv}))
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(final: prev: { nixfmt = final.callPackage ./nix-support/nixfmt.nix { }; })
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];
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config.permittedInsecurePackages = [ "nix-2.13.6" ];
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};
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stdenvs = forAllStdenvs (make-pkgs null);
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native = stdenvs.stdenvPackages;
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in
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{
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inherit stdenvs native;
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static = native.pkgsStatic;
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cross = forAllCrossSystems (crossSystem: make-pkgs crossSystem "stdenv");
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}
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);
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binaryTarball =
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nix: pkgs: pkgs.callPackage ./nix-support/binary-tarball.nix { inherit nix version; };
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overlayFor =
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getStdenv: final: prev:
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let
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currentStdenv = getStdenv final;
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in
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{
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nixStable = prev.nix;
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# Forward from the previous stage as we don’t want it to pick the lowdown override
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nixUnstable = prev.nixUnstable;
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build-release-notes = final.buildPackages.callPackage ./maintainers/build-release-notes.nix { };
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check-headers = final.buildPackages.callPackage ./maintainers/check-headers.nix { };
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clangbuildanalyzer = final.buildPackages.callPackage ./misc/clangbuildanalyzer.nix { };
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default-busybox-sandbox-shell = final.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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nix = final.callPackage ./package.nix {
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inherit versionSuffix;
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stdenv = currentStdenv;
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busybox-sandbox-shell = final.busybox-sandbox-shell or final.default-busybox-sandbox-shell;
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};
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# Export the patched version of boehmgc that Lix uses into the overlay
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# for consumers of this flake.
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boehmgc-nix = final.nix.boehmgc-nix;
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};
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in
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{
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# A Nixpkgs overlay that overrides the 'nix' and
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# 'nix.perl-bindings' packages.
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overlays.default = overlayFor (p: p.stdenv);
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hydraJobs = {
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# Binary package for various platforms.
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build = forAllSystems (system: self.packages.${system}.nix);
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rl-next = forAllSystems (
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system:
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let
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rl-next-check =
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name: dir:
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let
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pkgs = nixpkgsFor.${system}.native;
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in
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pkgs.buildPackages.runCommand "test-${name}-release-notes" { } ''
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LANG=C.UTF-8 ${lib.getExe pkgs.build-release-notes} ${dir} >$out
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'';
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in
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{
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user = rl-next-check "rl-next" ./doc/manual/rl-next;
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dev = rl-next-check "rl-next-dev" ./doc/manual/rl-next-dev;
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}
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);
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# Perl bindings for various platforms.
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perlBindings = forAllSystems (system: nixpkgsFor.${system}.native.nix.perl-bindings);
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# Binary tarball for various platforms, containing a Nix store
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# with the closure of 'nix' package.
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binaryTarball = forAllSystems (
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system: binaryTarball nixpkgsFor.${system}.native.nix nixpkgsFor.${system}.native
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);
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# docker image with Nix inside
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dockerImage = lib.genAttrs linux64BitSystems (system: self.packages.${system}.dockerImage);
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# API docs for Nix's unstable internal C++ interfaces.
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internal-api-docs =
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let
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nixpkgs = nixpkgsFor.x86_64-linux.native;
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inherit (nixpkgs) pkgs;
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nix = pkgs.callPackage ./package.nix {
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inherit versionSuffix officialRelease buildUnreleasedNotes;
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inherit (pkgs) build-release-notes;
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internalApiDocs = true;
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busybox-sandbox-shell = pkgs.busybox-sandbox-shell;
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};
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in
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nix.overrideAttrs (prev: {
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# This Hydra job is just for the internal API docs.
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# We don't need the build artifacts here.
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dontBuild = true;
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doCheck = false;
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doInstallCheck = false;
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});
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# System tests.
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tests = import ./tests/nixos { inherit lib nixpkgs nixpkgsFor; } // {
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# Make sure that nix-env still produces the exact same result
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# on a particular version of Nixpkgs.
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evalNixpkgs =
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with nixpkgsFor.x86_64-linux.native;
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runCommand "eval-nixos" { buildInputs = [ nix ]; } ''
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type -p nix-env
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# Note: we're filtering out nixos-install-tools because https://github.com/NixOS/nixpkgs/pull/153594#issuecomment-1020530593.
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time nix-env --store dummy:// -f ${nixpkgs-regression} -qaP --drv-path | sort | grep -v nixos-install-tools > packages
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[[ $(sha1sum < packages | cut -c1-40) = 402242fca90874112b34718b8199d844e8b03d12 ]]
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mkdir $out
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'';
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nixpkgsLibTests = forAllSystems (
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system:
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import (nixpkgs + "/lib/tests/release.nix") {
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pkgs = nixpkgsFor.${system}.native;
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nixVersions = [ self.packages.${system}.nix ];
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}
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);
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};
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pre-commit = forAllSystems (
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system:
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let
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pkgs = nixpkgsFor.${system}.native;
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# Import pre-commit bypassing the flake because flakes don't let
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# you have overlays. Also their implementation forces an
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# unnecessary reimport of nixpkgs for our use cases.
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tools = import (pre-commit-hooks + "/nix/call-tools.nix") pkgs;
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pre-commit-run = pkgs.callPackage (pre-commit-hooks + "/nix/run.nix") {
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inherit tools;
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isFlakes = true;
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# unused!
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gitignore-nix-src = builtins.throw "gitignore-nix-src is unused";
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};
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in
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pre-commit-run {
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src = self;
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hooks = {
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no-commit-to-branch = {
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enable = true;
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settings.branch = [ "main" ];
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};
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check-case-conflicts.enable = true;
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check-executables-have-shebangs = {
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enable = true;
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stages = [ "commit" ];
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};
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check-shebang-scripts-are-executable = {
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enable = true;
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stages = [ "commit" ];
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};
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check-symlinks = {
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enable = true;
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excludes = [ "^tests/functional/lang/symlink-resolution/broken$" ];
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};
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check-merge-conflicts.enable = true;
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end-of-file-fixer = {
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enable = true;
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excludes = [
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"\\.drv$"
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"^tests/functional/lang/"
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];
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};
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mixed-line-endings = {
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enable = true;
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excludes = [ "^tests/functional/lang/" ];
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};
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release-notes = {
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enable = true;
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package = pkgs.build-release-notes;
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files = "^doc/manual/rl-next(-dev)?";
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pass_filenames = false;
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entry = ''
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${lib.getExe pkgs.build-release-notes} doc/manual/rl-next doc/manual/rl-next-dev
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'';
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};
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check-headers = {
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enable = true;
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package = pkgs.check-headers;
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files = "^src/";
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types = [
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"c++"
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"file"
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"header"
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];
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# generated files; these will never actually be seen by this
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# check, and are left here as documentation
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excludes = [
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"(parser|lexer)-tab\\.hh$"
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"\\.gen\\.hh$"
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];
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entry = lib.getExe pkgs.check-headers;
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};
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# TODO: Once the test suite is nicer, clean up and start
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# enforcing trailing whitespace on tests that don't explicitly
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# check for it.
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trim-trailing-whitespace = {
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enable = true;
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stages = [ "commit" ];
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excludes = [ "^tests/functional/lang/" ];
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};
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treefmt = {
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enable = true;
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settings.formatters = [ pkgs.nixfmt ];
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};
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};
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}
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);
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};
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# NOTE *do not* add fresh derivations to checks, always add them to
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# hydraJobs first (so CI will pick them up) and only link them here
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checks = forAllSystems (
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system:
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{
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binaryTarball = self.hydraJobs.binaryTarball.${system};
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perlBindings = self.hydraJobs.perlBindings.${system};
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nixpkgsLibTests = self.hydraJobs.tests.nixpkgsLibTests.${system};
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rl-next = self.hydraJobs.rl-next.${system}.user;
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rl-next-dev = self.hydraJobs.rl-next.${system}.dev;
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pre-commit = self.hydraJobs.pre-commit.${system};
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}
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// (lib.optionalAttrs (builtins.elem system linux64BitSystems)) {
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dockerImage = self.hydraJobs.dockerImage.${system};
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}
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);
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packages = forAllSystems (
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system:
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rec {
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inherit (nixpkgsFor.${system}.native) nix;
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default = nix;
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}
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// (
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lib.optionalAttrs (builtins.elem system linux64BitSystems) {
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nix-static = nixpkgsFor.${system}.static.nix;
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dockerImage =
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let
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pkgs = nixpkgsFor.${system}.native;
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image = import ./docker.nix {
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inherit pkgs;
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tag = version;
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};
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in
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pkgs.runCommand "docker-image-tarball-${version}"
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{ meta.description = "Docker image with Nix for ${system}"; }
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''
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mkdir -p $out/nix-support
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image=$out/image.tar.gz
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ln -s ${image} $image
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echo "file binary-dist $image" >> $out/nix-support/hydra-build-products
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'';
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}
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// builtins.listToAttrs (
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map (crossSystem: {
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name = "nix-${crossSystem}";
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value = nixpkgsFor.${system}.cross.${crossSystem}.nix;
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}) crossSystems
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)
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// builtins.listToAttrs (
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map (stdenvName: {
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name = "nix-${stdenvName}";
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value = nixpkgsFor.${system}.stdenvs."${stdenvName}Packages".nix;
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}) stdenvs
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)
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||
)
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||
);
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devShells =
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let
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makeShell =
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pkgs: stdenv:
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let
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nix = pkgs.callPackage ./package.nix {
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inherit stdenv versionSuffix;
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busybox-sandbox-shell = pkgs.busybox-sandbox-shell or pkgs.default-busybox-sandbox;
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forDevShell = true;
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||
};
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pre-commit = self.hydraJobs.pre-commit.${pkgs.system} or { };
|
||
in
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(nix.override {
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buildUnreleasedNotes = true;
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officialRelease = false;
|
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}).overrideAttrs
|
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(
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prev:
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{
|
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# Required for clang-tidy checks
|
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buildInputs =
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||
prev.buildInputs
|
||
++ [
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pkgs.just
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pkgs.nixfmt
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||
]
|
||
++ lib.optional (pre-commit ? enabledPackages) pre-commit.enabledPackages
|
||
++ lib.optionals (stdenv.cc.isClang) [
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||
pkgs.llvmPackages.llvm
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||
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;
|
||
}
|
||
);
|
||
};
|
||
}
|