nixpkgs/pkgs/build-support/rust/default.nix

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{ stdenv, cacert, git, rustc, cargo, rustRegistry }:
{ name, src, depsSha256, buildInputs ? [], cargoUpdateHook ? "", ... } @ args:
let
fetchDeps = import ./fetchcargo.nix {
inherit stdenv cacert git rustc cargo rustRegistry;
};
cargoDeps = fetchDeps {
inherit name src cargoUpdateHook;
sha256 = depsSha256;
};
# The following is the directory name cargo creates when the registry index
# URL is file:///dev/null
#
# It's OK to use /dev/null as the URL because by the time we do this, cargo
# won't attempt to update the registry anymore, so the URL is more or less
# irrelevant
registryIndexDirName = "-ba82b75dd6681d6f";
in stdenv.mkDerivation (args // {
inherit cargoDeps rustRegistry;
patchRegistryDeps = ./patch-registry-deps;
buildInputs = [ git cargo rustc ] ++ buildInputs;
configurePhase = args.configurePhase or "true";
postUnpack = ''
echo "Using cargo deps from $cargoDeps"
cp -r "$cargoDeps" deps
chmod +w deps -R
cat <<EOF > deps/config
[registry]
index = "file:///dev/null"
EOF
echo "Using rust registry from $rustRegistry"
ln -s "$rustRegistry" "deps/registry/index/${registryIndexDirName}"
export CARGO_HOME="$(realpath deps)"
# Retrieved the Cargo.lock file which we saved during the fetch
mv deps/Cargo.lock $sourceRoot/
(
cd $sourceRoot
cargo fetch
cargo clean
)
'' + (args.postUnpack or "");
prePatch = ''
# Patch registry dependencies, using the scripts in $patchRegistryDeps
(
set -euo pipefail
cd ../deps/registry/src/*
for script in $patchRegistryDeps/*; do
# Run in a subshell so that directory changes and shell options don't
# affect any following commands
( . $script)
done
)
'' + (args.prePatch or "");
buildPhase = args.buildPhase or ''
echo "Running cargo build --release"
cargo build --release
'';
checkPhase = args.checkPhase or ''
echo "Running cargo test"
cargo test
'';
doCheck = args.doCheck or true;
installPhase = args.installPhase or ''
mkdir -p $out/bin
for f in $(find target/release -maxdepth 1 -type f); do
cp $f $out/bin
done;
'';
})