98 lines
2.9 KiB
Nix
98 lines
2.9 KiB
Nix
{ lib, stdenv, cacert, git, cargo, python3 }:
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let cargo-vendor-normalise = stdenv.mkDerivation {
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name = "cargo-vendor-normalise";
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src = ./cargo-vendor-normalise.py;
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nativeBuildInputs = [ python3.pkgs.wrapPython ];
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dontUnpack = true;
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installPhase = "install -D $src $out/bin/cargo-vendor-normalise";
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pythonPath = [ python3.pkgs.toml ];
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postFixup = "wrapPythonPrograms";
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doInstallCheck = true;
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installCheckPhase = ''
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# check that ../fetchcargo-default-config.toml is a fix point
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reference=${../fetchcargo-default-config.toml}
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< $reference $out/bin/cargo-vendor-normalise > test;
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cmp test $reference
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'';
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preferLocalBuild = true;
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};
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in
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{ name ? "cargo-deps"
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, src ? null
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, srcs ? []
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, patches ? []
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, sourceRoot ? ""
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, cargoUpdateHook ? ""
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, nativeBuildInputs ? []
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, ...
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} @ args:
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let hash_ =
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if args ? hash then { outputHashAlgo = null; outputHash = args.hash; }
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else if args ? sha256 then { outputHashAlgo = "sha256"; outputHash = args.sha256; }
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else throw "fetchCargoTarball requires a hash for ${name}";
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in stdenv.mkDerivation ({
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name = "${name}-vendor.tar.gz";
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nativeBuildInputs = [ cacert git cargo-vendor-normalise cargo ] ++ nativeBuildInputs;
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buildPhase = ''
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runHook preBuild
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# Ensure deterministic Cargo vendor builds
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export SOURCE_DATE_EPOCH=1
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if [[ ! -f Cargo.lock ]]; then
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echo
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echo "ERROR: The Cargo.lock file doesn't exist"
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echo
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echo "Cargo.lock is needed to make sure that cargoHash/cargoSha256 doesn't change"
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echo "when the registry is updated."
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echo
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exit 1
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fi
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# Keep the original around for copyLockfile
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cp Cargo.lock Cargo.lock.orig
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export CARGO_HOME=$(mktemp -d cargo-home.XXX)
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CARGO_CONFIG=$(mktemp cargo-config.XXXX)
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if [[ -n "$NIX_CRATES_INDEX" ]]; then
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cat >$CARGO_HOME/config.toml <<EOF
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[source.crates-io]
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replace-with = 'mirror'
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[source.mirror]
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registry = "$NIX_CRATES_INDEX"
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EOF
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fi
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${cargoUpdateHook}
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cargo vendor $name --respect-source-config | cargo-vendor-normalise > $CARGO_CONFIG
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# Create an empty vendor directory when there is no dependency to vendor
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mkdir -p $name
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# Add the Cargo.lock to allow hash invalidation
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cp Cargo.lock.orig $name/Cargo.lock
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# Packages with git dependencies generate non-default cargo configs, so
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# always install it rather than trying to write a standard default template.
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install -D $CARGO_CONFIG $name/.cargo/config;
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runHook postBuild
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'';
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# Build a reproducible tar, per instructions at https://reproducible-builds.org/docs/archives/
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installPhase = ''
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tar --owner=0 --group=0 --numeric-owner --format=gnu \
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--sort=name --mtime="@$SOURCE_DATE_EPOCH" \
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-czf $out $name
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'';
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inherit (hash_) outputHashAlgo outputHash;
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impureEnvVars = lib.fetchers.proxyImpureEnvVars ++ [ "NIX_CRATES_INDEX" ];
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} // (builtins.removeAttrs args [
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"name" "sha256" "cargoUpdateHook" "nativeBuildInputs"
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]))
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