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alsa-utils: fix wrapper shebang when cross-compiling #99532

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merged 1 commit into from Oct 6, 2020
Merged

alsa-utils: fix wrapper shebang when cross-compiling #99532

merged 1 commit into from Oct 6, 2020

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lopsided98
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Motivation for this change

The alsa-info.sh wrapper had build bash as a shebang when cross-compiling. This can be fixed by making makeWrapper a buildInput.

Things done
  • Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)
  • 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 nixpkgs-review --run "nixpkgs-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.

cc @Ericson2314 @AndersonTorres

@ofborg ofborg bot requested a review from AndersonTorres October 4, 2020 05:35
@AndersonTorres
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I am curious. Why putting makeWrapper as a buildInput solves it? makeWrapper definitely is not to be a buildInput...

@Ericson2314
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Per

nixpkgs/pkgs/top-level/all-packages.nix

Line 458 in 0794fb0

makeWrapper = makeSetupHook { deps = [ dieHook ]; substitutions = { shell = pkgs.runtimeShell; }; }

nativeBuildInputs should give you the true runtime shell, and depsBuildBuild should give you the build-time shell.

@lopsided98
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No, runtimeShell runs on the host platform for a given package set. When makeWrapper is a nativeBuildInput, its host platform is bmon's build platform. You can verify this by evaluating pkgsCross.<platform>.buildPackages.runtimeShell.

The only way I can see to make it work as a nativeBuildInput is to use shell = pkgs.targetPackages.runtimeShell. On the other hand, that would break it if it was used as a buildInput.

This is not the first time this fix has been needed: #58305

@AndersonTorres AndersonTorres merged commit 17f578d into NixOS:master Oct 6, 2020
@Ericson2314
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Oh my bad, but it definitely should be shell = pkgs.targetPackages.runtimeShell.

@lopsided98 lopsided98 deleted the alsa-utils-cross branch October 6, 2020 05:47
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@lopsided98 @AndersonTorres @Ericson2314