{ lib, stdenv, mkRustcDepArgs, mkRustcFeatureArgs, needUnstableCLI, }: { crateName, dependencies, crateFeatures, crateRenames, libName, release, libPath, crateType, metadata, crateBin, hasCrateBin, extraRustcOpts, verbose, colors, buildTests, codegenUnits, }: let baseRustcOpts = [ (if release then "-C opt-level=3" else "-C debuginfo=2") "-C codegen-units=${toString codegenUnits}" "--remap-path-prefix=$NIX_BUILD_TOP=/" (mkRustcDepArgs dependencies crateRenames) (mkRustcFeatureArgs crateFeatures) ] ++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [ "--target" stdenv.hostPlatform.rust.rustcTargetSpec ] ++ lib.optionals (needUnstableCLI dependencies) [ "-Z" "unstable-options" ] ++ extraRustcOpts # since rustc 1.42 the "proc_macro" crate is part of the default crate prelude # https://github.com/rust-lang/cargo/commit/4d64eb99a4#diff-7f98585dbf9d30aa100c8318e2c77e79R1021-R1022 ++ lib.optional (lib.elem "proc-macro" crateType) "--extern proc_macro"; rustcMeta = "-C metadata=${metadata} -C extra-filename=-${metadata}"; # build the final rustc arguments that can be different between different # crates libRustcOpts = lib.concatStringsSep " " ( baseRustcOpts ++ [ rustcMeta ] ++ (map (x: "--crate-type ${x}") crateType) ); binRustcOpts = lib.concatStringsSep " " ( [ "-C linker=${stdenv.cc}/bin/${stdenv.cc.targetPrefix}cc" ] ++ baseRustcOpts ); build_bin = if buildTests then "build_bin_test" else "build_bin"; in '' runHook preBuild # configure & source common build functions LIB_RUSTC_OPTS="${libRustcOpts}" BIN_RUSTC_OPTS="${binRustcOpts}" LIB_EXT="${stdenv.hostPlatform.extensions.sharedLibrary or ""}" LIB_PATH="${libPath}" LIB_NAME="${libName}" CRATE_NAME='${lib.replaceStrings [ "-" ] [ "_" ] libName}' setup_link_paths if [[ -e "$LIB_PATH" ]]; then build_lib "$LIB_PATH" ${lib.optionalString buildTests ''build_lib_test "$LIB_PATH"''} elif [[ -e src/lib.rs ]]; then build_lib src/lib.rs ${lib.optionalString buildTests "build_lib_test src/lib.rs"} fi ${lib.optionalString (lib.length crateBin > 0) ( lib.concatMapStringsSep "\n" ( bin: let haveRequiredFeature = if bin ? requiredFeatures then # Check that all element in requiredFeatures are also present in crateFeatures lib.intersectLists bin.requiredFeatures crateFeatures == bin.requiredFeatures else true; in if haveRequiredFeature then '' mkdir -p target/bin BIN_NAME='${bin.name or crateName}' ${ if !bin ? path then '' BIN_PATH="" search_for_bin_path "$BIN_NAME" '' else '' BIN_PATH='${bin.path}' '' } ${build_bin} "$BIN_NAME" "$BIN_PATH" '' else '' echo Binary ${bin.name or crateName} not compiled due to not having all of the required features -- ${lib.escapeShellArg (builtins.toJSON bin.requiredFeatures)} -- enabled. '' ) crateBin )} ${lib.optionalString buildTests '' # When tests are enabled build all the files in the `tests` directory as # test binaries. if [ -d tests ]; then # find all the .rs files (or symlinks to those) in the tests directory, no subdirectories find tests -maxdepth 1 \( -type f -o -type l \) -a -name '*.rs' -print0 | while IFS= read -r -d ''' file; do mkdir -p target/bin build_bin_test_file "$file" done # find all the subdirectories of tests/ that contain a main.rs file as # that is also a test according to cargo find tests/ -mindepth 1 -maxdepth 2 \( -type f -o -type l \) -a -name 'main.rs' -print0 | while IFS= read -r -d ''' file; do mkdir -p target/bin build_bin_test_file "$file" done fi ''} # If crateBin is empty and hasCrateBin is not set then we must try to # detect some kind of bin target based on some files that might exist. ${lib.optionalString (lib.length crateBin == 0 && !hasCrateBin) '' if [[ -e src/main.rs ]]; then mkdir -p target/bin ${build_bin} ${crateName} src/main.rs fi for i in src/bin/*.rs; do #*/ mkdir -p target/bin ${build_bin} "$(basename $i .rs)" "$i" done ''} # Remove object files to avoid "wrong ELF type" find target -type f -name "*.o" -print0 | xargs -0 rm -f runHook postBuild ''