49 lines
1.5 KiB
Nix
49 lines
1.5 KiB
Nix
{ lib
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, makeSetupHook
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, zig
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}:
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makeSetupHook {
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name = "zig-hook";
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propagatedBuildInputs = [ zig ];
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substitutions = {
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# This zig_default_flags below is meant to avoid CPU feature impurity in
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# Nixpkgs. However, this flagset is "unstable": it is specifically meant to
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# be controlled by the upstream development team - being up to that team
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# exposing or not that flags to the outside (especially the package manager
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# teams).
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# Because of this hurdle, @andrewrk from Zig Software Foundation proposed
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# some solutions for this issue. Hopefully they will be implemented in
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# future releases of Zig. When this happens, this flagset should be
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# revisited accordingly.
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# Below are some useful links describing the discovery process of this 'bug'
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# in Nixpkgs:
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# https://github.com/NixOS/nixpkgs/issues/169461
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# https://github.com/NixOS/nixpkgs/issues/185644
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# https://github.com/NixOS/nixpkgs/pull/197046
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# https://github.com/NixOS/nixpkgs/pull/241741#issuecomment-1624227485
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# https://github.com/ziglang/zig/issues/14281#issuecomment-1624220653
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zig_default_flags =
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let
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releaseType =
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if lib.versionAtLeast zig.version "0.11" then
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"-Doptimize=ReleaseSafe"
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else
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"-Drelease-safe=true";
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in
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[ "-Dcpu=baseline" releaseType ];
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};
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passthru = { inherit zig; };
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meta = {
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description = "A setup hook for using the Zig compiler in Nixpkgs";
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inherit (zig.meta) maintainers platforms broken;
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};
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} ./setup-hook.sh
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