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rustc: enable toolchain cross-compilation to musl libc #65533

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rustc: enable toolchain cross-compilation to musl libc #65533

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lukateras
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Motivation for this change

Allows to cross-compile Rust packages to musl libc. Example:

nix build nixpkgs.pkgsCross.musl64.boringtun
Things done
  • Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS)
  • Built on platform(s)
    • NixOS
    • macOS
    • other Linux distributions
  • Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
  • Tested compilation of all pkgs that depend on this change using nix-shell -p nix-review --run "nix-review wip"
  • Tested execution of all binary files (usually in ./result/bin/)
  • Determined the impact on package closure size (by running nix path-info -S before and after)
  • Ensured that relevant documentation is up to date
  • Fits CONTRIBUTING.md.

@matthewbauer matthewbauer added the 6.topic: cross-compilation Building packages on a different sort platform than than they will be run on label Aug 28, 2019
@lukateras lukateras changed the title rustc: enable cross-compilation to musl libc rustc: enable toolchain cross-compilation to musl libc Aug 29, 2019
@lukateras
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I never quite got it working.

@lukateras lukateras closed this Dec 7, 2019
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@figsoda figsoda Awaiting requested review from figsoda figsoda will be requested when the pull request is marked ready for review figsoda is a code owner

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6.topic: cross-compilation Building packages on a different sort platform than than they will be run on 6.topic: rust 10.rebuild-darwin: 0 10.rebuild-linux: 0
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@lukateras @matthewbauer