NixOS instructions to fix mesa version mismatch outdated

[julius-boettger]

As of writing this, the wiki contains the following lines here:

If you start experiencing lag and FPS drops in games or programs like Blender on
**stable** NixOS when using the Hyprland flake, it is most likely a `mesa`
version mismatch between your system and Hyprland.

You can fix this issue by using `mesa` from Hyprland's `nixpkgs` input:

```nix {filename="configuration.nix"}
{pkgs, inputs, ...}: let
  pkgs-unstable = inputs.hyprland.inputs.nixpkgs.legacyPackages.${pkgs.stdenv.hostPlatform.system};
in {
  hardware.opengl = {
    package = pkgs-unstable.mesa.drivers;

    # if you also want 32-bit support (e.g for Steam)
    driSupport32Bit = true;
    package32 = pkgs-unstable.pkgsi686Linux.mesa.drivers;
  };
}

This is outdated, as the NixOS option hardware.opengl was removed with the release of NixOS 24.11 a few months ago.

This should either be updated (if still relevant and possible) or removed.

I am not aware of any way to achieve similar results with the new options of NixOS 24.11, maybe @fufexan knows more?

[fufexan]

hardware.opengl has been renamed to hardware.graphics. The inner options are the same. Afaik it's only a deprecation and it will be finally removed next release or in 25.11.

[julius-boettger]

Ah, I see. But hardware.graphics only seems to have an extraPackages attribute, but no package(32), are you sure the inner options are the same?

[fufexan]

Sure, they're not listed in the options search anymore, but they're still accessible https://github.com/NixOS/nixpkgs/blob/nixos-24.11/nixos/modules/hardware/graphics.nix#L123-L124.