96 lines
3.7 KiB
Nix
96 lines
3.7 KiB
Nix
{ fetchurl, lib, stdenv, zstd
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, autoPatchelfHook, gcc-unwrapped
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, testers, buck2 # for passthru.tests
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}:
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let
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# NOTE (aseipp): buck2 uses a precompiled binary build for good reason — the
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# upstream codebase extensively uses unstable `rustc` nightly features, and as
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# a result can't be built upstream in any sane manner. it is only ever tested
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# and integrated against a single version of the compiler, which produces all
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# usable binaries. you shouldn't try to workaround this or get clever and
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# think you can patch it to work; just accept it for now. it is extremely
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# unlikely buck2 will build with a stable compiler anytime soon; see related
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# upstream issues:
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#
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# - NixOS/nixpkgs#226677
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# - NixOS/nixpkgs#232471
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# - facebook/buck2#265
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# - facebook/buck2#322
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#
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# worth noting: it *is* possible to build buck2 from source using
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# buildRustPackage, and it works fine, but only if you are using flakes and
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# can import `rust-overlay` from somewhere else to vendor your compiler. See
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# nixos/nixpkgs#226677 for more information about that.
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# map our platform name to the rust toolchain suffix
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suffix = {
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x86_64-darwin = "x86_64-apple-darwin";
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aarch64-darwin = "aarch64-apple-darwin";
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# TODO (aseipp): there's an aarch64-linux musl build of buck2, but not a
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# x86_64-linux musl build. keep things consistent for now and use glibc
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# builds for both; but we should fix this in the future to be less fragile;
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# we can then remove autoPatchelfHook.
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x86_64-linux = "x86_64-unknown-linux-gnu";
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aarch64-linux = "aarch64-unknown-linux-gnu";
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}."${stdenv.hostPlatform.system}" or (throw "Unsupported system: ${stdenv.hostPlatform.system}");
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buck2-version = "2023-07-11";
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src =
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let
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hashes = builtins.fromJSON (builtins.readFile ./hashes.json);
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sha256 = hashes."${stdenv.hostPlatform.system}";
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url = "https://github.com/facebook/buck2/releases/download/${buck2-version}/buck2-${suffix}.zst";
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in fetchurl { inherit url sha256; };
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in
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stdenv.mkDerivation {
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pname = "buck2";
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version = "unstable-${buck2-version}"; # TODO (aseipp): kill 'unstable' once a non-prerelease is made
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inherit src;
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buildInputs = lib.optionals stdenv.isLinux [ gcc-unwrapped ]; # need libgcc_s.so.1 for patchelf
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nativeBuildInputs = [ zstd ]
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# TODO (aseipp): move to musl build and nuke this?
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++ lib.optionals stdenv.isLinux [ autoPatchelfHook ];
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dontConfigure = true;
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unpackPhase = "unzstd ${src} -o ./buck2";
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buildPhase = "chmod +x ./buck2";
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installPhase = ''
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mkdir -p $out/bin
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install -D buck2 $out/bin/buck2
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'';
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# NOTE (aseipp): use installCheckPhase instead of checkPhase so that
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# autoPatchelfHook kicks in first.
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doInstallCheck = true;
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installCheckPhase = "$out/bin/buck2 --version";
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passthru = {
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updateScript = ./update.sh;
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tests = testers.testVersion {
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package = buck2;
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# NOTE (aseipp): the buck2 --version command doesn't actually print out
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# the given version tagged in the release, but a hash, but not the git
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# hash; the entire version logic is bizarrely specific to buck2, and needs
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# to be reworked the open source build to behave like expected. in the
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# mean time, it *does* always print out 'buck2 <hash>...' so we can just
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# match on "buck2"
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version = "buck2";
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};
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};
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meta = with lib; {
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description = "Fast, hermetic, multi-language build system";
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homepage = "https://buck2.build";
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changelog = "https://github.com/facebook/buck2/releases/tag/${buck2-version}";
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license = with licenses; [ asl20 /* or */ mit ];
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mainProgram = "buck2";
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maintainers = with maintainers; [ thoughtpolice ];
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platforms = [
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"x86_64-linux" "aarch64-linux"
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"x86_64-darwin" "aarch64-darwin"
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];
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};
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}
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