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nixgl: add support for channel-based configuration

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Jure Varlec 2024-10-02 20:19:53 +02:00 committed by Robert Helgesson
parent 7a5879707b
commit 8bd6e0a1a8
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2 changed files with 34 additions and 4 deletions
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15
docs/manual/usage/gpu-non-nixos.md
View file

@ -50,9 +50,9 @@ Xonotic to run on the dGPU, but uses the wrapper function directly for
demonstration purposes.
```nix
{ config, lib, pkgs, nixGL, ... }:
{ config, lib, pkgs, nixgl, ... }:
{
nixGL.packages = nixGL.packages;
nixGL.packages = nixgl.packages;
nixGL.defaultWrapper = "mesa";
nixGL.offloadWrapper = "nvidiaPrime";
nixGL.installScripts = [ "mesa" "nvidiaPrime" ];
@ -68,3 +68,14 @@ demonstration purposes.
];
}
```
The above example assumes a flake-based setup where `nixgl` was passed from the
flake. When using channels, the example would instead begin with
```nix
{ config, lib, pkgs, ... }:
{
nixGL.packages = import <nixgl> { inherit pkgs; };
# The rest is the same as above
...
```

23
modules/misc/nixgl.nix
View file

@ -138,11 +138,30 @@ in {
};
config = let
findWrapperPackage = packageAttr:
# NixGL has wrapper packages in different places depending on how you
# access it. We want HM configuration to be the same, regardless of how
# NixGL is imported.
#
# First, let's see if we have a flake.
if builtins.hasAttr pkgs.system cfg.packages then
cfg.packages.${pkgs.system}.${packageAttr}
else
# Next, let's see if we have a channel.
if builtins.hasAttr packageAttr cfg.packages then
cfg.packages.${packageAttr}
else
# Lastly, with channels, some wrappers are grouped under "auto".
if builtins.hasAttr "auto" cfg.packages then
cfg.packages.auto.${packageAttr}
else
throw "Incompatible NixGL package layout";
getWrapperExe = vendor:
let
glPackage = cfg.packages.${pkgs.system}."nixGL${vendor}";
glPackage = findWrapperPackage "nixGL${vendor}";
glExe = lib.getExe glPackage;
vulkanPackage = cfg.packages.${pkgs.system}."nixVulkan${vendor}";
vulkanPackage = findWrapperPackage "nixVulkan${vendor}";
vulkanExe = if cfg.vulkan.enable then lib.getExe vulkanPackage else "";
in "${glExe} ${vulkanExe}";