2024-05-02 00:46:19 +00:00
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{ lib, runCommand, rustc-unwrapped, sysroot ? null }:
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runCommand "${rustc-unwrapped.pname}-wrapper-${rustc-unwrapped.version}" {
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preferLocalBuild = true;
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strictDeps = true;
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inherit (rustc-unwrapped) outputs;
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env = {
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sysroot = lib.optionalString (sysroot != null) "--sysroot ${sysroot}";
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# Upstream rustc still assumes that musl = static[1]. The fix for
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# this is to disable crt-static by default for non-static musl
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# targets.
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#
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# Even though Cargo will build build.rs files for the build platform,
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# cross-compiling _from_ musl appears to work fine, so we only need
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# to do this when rustc's target platform is dynamically linked musl.
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#
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# [1]: https://github.com/rust-lang/compiler-team/issues/422
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#
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# WARNING: using defaultArgs is dangerous, as it will apply to all
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# targets used by this compiler (host and target). This means
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# that it can't be used to set arguments that should only be
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# applied to the target. It's fine to do this for -crt-static,
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# because rustc does not support +crt-static host platforms
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# anyway.
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defaultArgs = lib.optionalString
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(with rustc-unwrapped.stdenv.targetPlatform; isMusl && !isStatic)
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"-C target-feature=-crt-static";
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};
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passthru = {
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inherit (rustc-unwrapped) pname version src llvm llvmPackages;
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unwrapped = rustc-unwrapped;
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};
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meta = rustc-unwrapped.meta // {
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description = "${rustc-unwrapped.meta.description} (wrapper script)";
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priority = 10;
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};
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} ''
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mkdir -p $out/bin
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ln -s ${rustc-unwrapped}/bin/* $out/bin
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rm $out/bin/{rustc,rustdoc}
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prog=${rustc-unwrapped}/bin/rustc extraFlagsVar=NIX_RUSTFLAGS \
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substituteAll ${./rustc-wrapper.sh} $out/bin/rustc
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prog=${rustc-unwrapped}/bin/rustdoc extraFlagsVar=NIX_RUSTDOCFLAGS \
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substituteAll ${./rustc-wrapper.sh} $out/bin/rustdoc
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chmod +x $out/bin/{rustc,rustdoc}
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2024-05-13 21:24:10 +00:00
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${lib.concatMapStrings (output: ''
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ln -s ${rustc-unwrapped.${output}} ''$${output}
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'') (lib.remove "out" rustc-unwrapped.outputs)}
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2024-05-02 00:46:19 +00:00
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''
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