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This makes it possible to reuse this functionality as a hook in derivations that do not use buildRustPackage.
50 lines
1.8 KiB
Nix
50 lines
1.8 KiB
Nix
{ buildPackages
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, callPackage
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, diffutils
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, lib
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, makeSetupHook
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, rust
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, stdenv
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, target ? rust.toRustTargetSpec stdenv.hostPlatform
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}:
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let
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targetIsJSON = lib.hasSuffix ".json" target;
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# see https://github.com/rust-lang/cargo/blob/964a16a28e234a3d397b2a7031d4ab4a428b1391/src/cargo/core/compiler/compile_kind.rs#L151-L168
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# the "${}" is needed to transform the path into a /nix/store path before baseNameOf
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shortTarget = if targetIsJSON then
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(lib.removeSuffix ".json" (builtins.baseNameOf "${target}"))
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else target;
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ccForBuild="${buildPackages.stdenv.cc}/bin/${buildPackages.stdenv.cc.targetPrefix}cc";
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ccForHost="${stdenv.cc}/bin/${stdenv.cc.targetPrefix}cc";
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in {
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cargoSetupHook = callPackage ({ }:
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makeSetupHook {
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name = "cargo-setup-hook.sh";
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deps = [ ];
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substitutions = {
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defaultConfig = ../fetchcargo-default-config.toml;
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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 = "${diffutils.nativeDrv or diffutils}/bin/diff";
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# Target platform
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rustTarget = ''
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[target."${rust.toRustTarget stdenv.buildPlatform}"]
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"linker" = "${ccForBuild}"
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${lib.optionalString (stdenv.buildPlatform.config != stdenv.hostPlatform.config) ''
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[target."${shortTarget}"]
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"linker" = "${ccForHost}"
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${# https://github.com/rust-lang/rust/issues/46651#issuecomment-433611633
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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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'';
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};
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} ./cargo-setup-hook.sh) {};
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}
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