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{ lib, stdenv, cacert, git, cargo, python3 }:
let cargo-vendor-normalise = stdenv.mkDerivation {
name = "cargo-vendor-normalise";
src = ./cargo-vendor-normalise.py;
nativeBuildInputs = [ python3.pkgs.wrapPython ];
dontUnpack = true;
installPhase = "install -D $src $out/bin/cargo-vendor-normalise";
pythonPath = [ python3.pkgs.toml ];
postFixup = "wrapPythonPrograms";
doInstallCheck = true;
installCheckPhase = ''
# check that ../fetchcargo-default-config.toml is a fix point
reference=${../fetchcargo-default-config.toml}
< $reference $out/bin/cargo-vendor-normalise > test;
cmp test $reference
'';
preferLocalBuild = true;
};
in
{ name ? "cargo-deps"
, src ? null
, srcs ? []
, patches ? []
, sourceRoot ? ""
, cargoUpdateHook ? ""
, nativeBuildInputs ? []
, ...
} @ args:
let hash_ =
if args ? hash then { outputHashAlgo = null; outputHash = args.hash; }
else if args ? sha256 then { outputHashAlgo = "sha256"; outputHash = args.sha256; }
else throw "fetchCargoTarball requires a hash for ${name}";
in stdenv.mkDerivation ({
name = "${name}-vendor.tar.gz";
nativeBuildInputs = [ cacert git cargo-vendor-normalise cargo ] ++ nativeBuildInputs;
buildPhase = ''
runHook preBuild
# Ensure deterministic Cargo vendor builds
export SOURCE_DATE_EPOCH=1
if [[ ! -f Cargo.lock ]]; then
echo
echo "ERROR: The Cargo.lock file doesn't exist"
echo
echo "Cargo.lock is needed to make sure that cargoHash/cargoSha256 doesn't change"
echo "when the registry is updated."
echo
exit 1
fi
# Keep the original around for copyLockfile
cp Cargo.lock Cargo.lock.orig
export CARGO_HOME=$(mktemp -d cargo-home.XXX)
CARGO_CONFIG=$(mktemp cargo-config.XXXX)
${cargoUpdateHook}
cargo vendor $name | cargo-vendor-normalise > $CARGO_CONFIG
# Add the Cargo.lock to allow hash invalidation
cp Cargo.lock.orig $name/Cargo.lock
# Packages with git dependencies generate non-default cargo configs, so
# always install it rather than trying to write a standard default template.
install -D $CARGO_CONFIG $name/.cargo/config;
runHook postBuild
'';
# Build a reproducible tar, per instructions at https://reproducible-builds.org/docs/archives/
installPhase = ''
tar --owner=0 --group=0 --numeric-owner --format=gnu \
--sort=name --mtime="@$SOURCE_DATE_EPOCH" \
-czf $out $name
'';
inherit (hash_) outputHashAlgo outputHash;
impureEnvVars = lib.fetchers.proxyImpureEnvVars;
} // (builtins.removeAttrs args [
"name" "sha256" "cargoUpdateHook" "nativeBuildInputs"
]))
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