amdvlk 32bit

[zeratax]

Project description
#82305 introduced amdvlk to nixos already, but afaict this only works with 64bit application, but since a lot of especially games are still 32bit it really would be nice to also be able to run those with amdvlk.

I currently have this:

{
environment.variables.VK_ICD_FILENAMES = "${pkgs.amdvlk}/share/vulkan/icd.d/amd_icd64.json:/run/opengl-driver-32/share/vulkan/icd.d/radeon_icd.i686.json";
}

In my nixos configuration to make sure that if possible amdvlk is used but also to make sure 32bit applications can still run

Metadata

should be the same

[Flakebi]

What would be the right way to do this with nix?

The possibilities I see are:

1. Build with -DCMAKE_C_FLAGS=-m32 -DCMAKE_CXX_FLAGS=-m32
2. Use the nix i686 toolchain (working amdvlk here: Flakebi@71f08eb, can be used as pkgsi686Linux.amdvlk)

A disadvantage of 2. is that it does not support lto.