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{
lib,
runCommand,
rustc-unwrapped,
sysroot ? null,
stdenvNoCC,
shell ? stdenvNoCC.shell,
}:
let
sysrootFlag = lib.optionalString (sysroot != null) "--sysroot ${sysroot}";
# Upstream rustc still assumes that musl = static[1]. The fix for
# this is to disable crt-static by default for non-static musl
# targets.
#
# Even though Cargo will build build.rs files for the build platform,
# cross-compiling _from_ musl appears to work fine, so we only need
# to do this when rustc's target platform is dynamically linked musl.
#
# [1]: https://github.com/rust-lang/compiler-team/issues/422
#
# WARNING: using defaultArgs is dangerous, as it will apply to all
# targets used by this compiler (host and target). This means
# that it can't be used to set arguments that should only be
# applied to the target. It's fine to do this for -crt-static,
# because rustc does not support +crt-static host platforms
# anyway.
defaultArgs = lib.optionalString (
with rustc-unwrapped.stdenv.targetPlatform; isMusl && !isStatic
) "-C target-feature=-crt-static";
in
runCommand "${rustc-unwrapped.pname}-wrapper-${rustc-unwrapped.version}"
{
preferLocalBuild = true;
strictDeps = true;
inherit (rustc-unwrapped) outputs;
passthru = {
inherit (rustc-unwrapped)
pname
version
src
llvm
llvmPackages
targetPlatforms
targetPlatformsWithHostTools
badTargetPlatforms
;
unwrapped = rustc-unwrapped;
};
meta = rustc-unwrapped.meta // {
description = "${rustc-unwrapped.meta.description} (wrapper script)";
priority = 10;
};
}
''
mkdir -p $out/bin
ln -s ${rustc-unwrapped}/bin/* $out/bin
rm $out/bin/{rustc,rustdoc}
substitute ${./rustc-wrapper.sh} $out/bin/rustc \
--replace-fail "@shell@" ${lib.escapeShellArg shell} \
--replace-fail "@sysrootFlag@" ${lib.escapeShellArg sysrootFlag} \
--replace-fail "@defaultArgs@" ${lib.escapeShellArg defaultArgs} \
--replace-fail "@prog@" ${lib.escapeShellArg rustc-unwrapped}/bin/rustc \
--replace-fail "@extraFlagsVar@" "NIX_RUSTFLAGS"
substitute ${./rustc-wrapper.sh} $out/bin/rustdoc \
--replace-fail "@shell@" ${lib.escapeShellArg shell} \
--replace-fail "@sysrootFlag@" ${lib.escapeShellArg sysrootFlag} \
--replace-fail "@defaultArgs@" ${lib.escapeShellArg defaultArgs} \
--replace-fail "@prog@" ${lib.escapeShellArg rustc-unwrapped}/bin/rustdoc \
--replace-fail "@extraFlagsVar@" "NIX_RUSTDOCFLAGS"
chmod +x $out/bin/{rustc,rustdoc}
${lib.concatMapStrings (output: "ln -s ${rustc-unwrapped.${output}} \$${output}\n") (
lib.remove "out" rustc-unwrapped.outputs
)}
''
|
