246 lines
8.0 KiB
Nix
246 lines
8.0 KiB
Nix
{ stdenv
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, buildPackages
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, cacert
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, cargo
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, diffutils
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, fetchCargoTarball
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, git
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, rust
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, rustc
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, windows
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}:
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{ name ? "${args.pname}-${args.version}"
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, cargoSha256 ? "unset"
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, src ? null
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, srcs ? null
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, unpackPhase ? null
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, cargoPatches ? []
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, patches ? []
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, sourceRoot ? null
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, logLevel ? ""
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, buildInputs ? []
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, nativeBuildInputs ? []
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, cargoUpdateHook ? ""
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, cargoDepsHook ? ""
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, cargoBuildFlags ? []
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, buildType ? "release"
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, meta ? {}
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, target ? null
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, cargoVendorDir ? null
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, checkType ? buildType
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# Needed to `pushd`/`popd` into a subdir of a tarball if this subdir
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# contains a Cargo.toml, but isn't part of a workspace (which is e.g. the
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# case for `rustfmt`/etc from the `rust-sources).
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# Otherwise, everything from the tarball would've been built/tested.
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, buildAndTestSubdir ? null
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, ... } @ args:
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assert cargoVendorDir == null -> cargoSha256 != "unset";
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assert buildType == "release" || buildType == "debug";
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let
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cargoDeps = if cargoVendorDir == null
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then fetchCargoTarball {
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inherit name src srcs sourceRoot unpackPhase cargoUpdateHook;
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patches = cargoPatches;
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sha256 = cargoSha256;
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}
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else null;
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# If we have a cargoSha256 fixed-output derivation, validate it at build time
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# against the src fixed-output derivation to check consistency.
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validateCargoDeps = cargoSha256 != "unset";
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# Some cargo builds include build hooks that modify their own vendor
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# dependencies. This copies the vendor directory into the build tree and makes
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# it writable. If we're using a tarball, the unpackFile hook already handles
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# this for us automatically.
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setupVendorDir = if cargoVendorDir == null
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then (''
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unpackFile "$cargoDeps"
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cargoDepsCopy=$(stripHash $cargoDeps)
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'')
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else ''
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cargoDepsCopy="$sourceRoot/${cargoVendorDir}"
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'';
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rustTarget = if target == null then rust.toRustTarget stdenv.hostPlatform else target;
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ccForBuild="${buildPackages.stdenv.cc}/bin/${buildPackages.stdenv.cc.targetPrefix}cc";
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cxxForBuild="${buildPackages.stdenv.cc}/bin/${buildPackages.stdenv.cc.targetPrefix}c++";
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ccForHost="${stdenv.cc}/bin/${stdenv.cc.targetPrefix}cc";
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cxxForHost="${stdenv.cc}/bin/${stdenv.cc.targetPrefix}c++";
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releaseDir = "target/${rustTarget}/${buildType}";
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# Specify the stdenv's `diff` by abspath to ensure that the user's build
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# inputs do not cause us to find the wrong `diff`.
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# The `.nativeDrv` stanza works like nativeBuildInputs and ensures cross-compiling has the right version available.
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diff = "${diffutils.nativeDrv or diffutils}/bin/diff";
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in
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stdenv.mkDerivation (args // {
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inherit cargoDeps;
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patchRegistryDeps = ./patch-registry-deps;
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nativeBuildInputs = nativeBuildInputs ++ [ cacert git cargo rustc ];
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buildInputs = buildInputs ++ stdenv.lib.optional stdenv.hostPlatform.isMinGW windows.pthreads;
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patches = cargoPatches ++ patches;
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PKG_CONFIG_ALLOW_CROSS =
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if stdenv.buildPlatform != stdenv.hostPlatform then 1 else 0;
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postUnpack = ''
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eval "$cargoDepsHook"
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${setupVendorDir}
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mkdir .cargo
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config="$(pwd)/$cargoDepsCopy/.cargo/config";
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if [[ ! -e $config ]]; then
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config=${./fetchcargo-default-config.toml};
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fi;
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substitute $config .cargo/config \
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--subst-var-by vendor "$(pwd)/$cargoDepsCopy"
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cat >> .cargo/config <<'EOF'
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[target."${rust.toRustTarget stdenv.buildPlatform}"]
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"linker" = "${ccForBuild}"
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${stdenv.lib.optionalString (stdenv.buildPlatform.config != stdenv.hostPlatform.config) ''
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[target."${rustTarget}"]
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"linker" = "${ccForHost}"
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${# https://github.com/rust-lang/rust/issues/46651#issuecomment-433611633
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stdenv.lib.optionalString (stdenv.hostPlatform.isMusl && stdenv.hostPlatform.isAarch64) ''
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"rustflags" = [ "-C", "target-feature=+crt-static", "-C", "link-arg=-lgcc" ]
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''}
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''}
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EOF
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export RUST_LOG=${logLevel}
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'' + (args.postUnpack or "");
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# After unpacking and applying patches, check that the Cargo.lock matches our
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# src package. Note that we do this after the patchPhase, because the
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# patchPhase may create the Cargo.lock if upstream has not shipped one.
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postPatch = (args.postPatch or "") + stdenv.lib.optionalString validateCargoDeps ''
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cargoDepsLockfile=$NIX_BUILD_TOP/$cargoDepsCopy/Cargo.lock
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srcLockfile=$NIX_BUILD_TOP/$sourceRoot/Cargo.lock
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echo "Validating consistency between $srcLockfile and $cargoDepsLockfile"
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if ! ${diff} $srcLockfile $cargoDepsLockfile; then
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# If the diff failed, first double-check that the file exists, so we can
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# give a friendlier error msg.
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if ! [ -e $srcLockfile ]; then
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echo "ERROR: Missing Cargo.lock from src. Expected to find it at: $srcLockfile"
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echo "Hint: You can use the cargoPatches attribute to add a Cargo.lock manually to the build."
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exit 1
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fi
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if ! [ -e $cargoDepsLockfile ]; then
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echo "ERROR: Missing lockfile from cargo vendor. Expected to find it at: $cargoDepsLockfile"
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exit 1
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fi
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echo
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echo "ERROR: cargoSha256 is out of date"
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echo
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echo "Cargo.lock is not the same in $cargoDepsCopy"
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echo
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echo "To fix the issue:"
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echo '1. Use "0000000000000000000000000000000000000000000000000000" as the cargoSha256 value'
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echo "2. Build the derivation and wait it to fail with a hash mismatch"
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echo "3. Copy the 'got: sha256:' value back into the cargoSha256 field"
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echo
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exit 1
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fi
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'' + ''
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unset cargoDepsCopy
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'';
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configurePhase = args.configurePhase or ''
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runHook preConfigure
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runHook postConfigure
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'';
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buildPhase = with builtins; args.buildPhase or ''
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${stdenv.lib.optionalString (buildAndTestSubdir != null) "pushd ${buildAndTestSubdir}"}
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runHook preBuild
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(
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set -x
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env \
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"CC_${rust.toRustTarget stdenv.buildPlatform}"="${ccForBuild}" \
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"CXX_${rust.toRustTarget stdenv.buildPlatform}"="${cxxForBuild}" \
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"CC_${rust.toRustTarget stdenv.hostPlatform}"="${ccForHost}" \
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"CXX_${rust.toRustTarget stdenv.hostPlatform}"="${cxxForHost}" \
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cargo build \
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${stdenv.lib.optionalString (buildType == "release") "--release"} \
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--target ${rustTarget} \
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--frozen ${concatStringsSep " " cargoBuildFlags}
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)
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runHook postBuild
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${stdenv.lib.optionalString (buildAndTestSubdir != null) "popd"}
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# This needs to be done after postBuild: packages like `cargo` do a pushd/popd in
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# the pre/postBuild-hooks that need to be taken into account before gathering
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# all binaries to install.
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bins=$(find $releaseDir \
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-maxdepth 1 \
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-type f \
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-executable ! \( -regex ".*\.\(so.[0-9.]+\|so\|a\|dylib\)" \))
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'';
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installCheckPhase = args.checkPhase or (let
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argstr = "${stdenv.lib.optionalString (checkType == "release") "--release"} --target ${rustTarget} --frozen";
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in ''
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${stdenv.lib.optionalString (buildAndTestSubdir != null) "pushd ${buildAndTestSubdir}"}
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runHook preCheck
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echo "Running cargo test ${argstr} -- ''${checkFlags} ''${checkFlagsArray+''${checkFlagsArray[@]}}"
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cargo test ${argstr} -- ''${checkFlags} ''${checkFlagsArray+"''${checkFlagsArray[@]}"}
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runHook postCheck
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${stdenv.lib.optionalString (buildAndTestSubdir != null) "popd"}
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'');
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doCheck = args.doCheck or true;
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strictDeps = true;
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inherit releaseDir;
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installPhase = args.installPhase or ''
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runHook preInstall
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# rename the output dir to a architecture independent one
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mapfile -t targets < <(find "$NIX_BUILD_TOP" -type d | grep '${releaseDir}$')
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for target in "''${targets[@]}"; do
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rm -rf "$target/../../${buildType}"
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ln -srf "$target" "$target/../../"
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done
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mkdir -p $out/bin $out/lib
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xargs -r cp -t $out/bin <<< $bins
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find $releaseDir \
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-maxdepth 1 \
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-regex ".*\.\(so.[0-9.]+\|so\|a\|dylib\)" \
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-print0 | xargs -r -0 cp -t $out/lib
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rmdir --ignore-fail-on-non-empty $out/lib $out/bin
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runHook postInstall
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'';
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passthru = { inherit cargoDeps; } // (args.passthru or {});
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meta = {
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# default to Rust's platforms
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platforms = rustc.meta.platforms;
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} // meta;
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})
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