{...}: {
  # AMD GPU (mesa + RADV/ROCm).
  flake.nixosModules.gpuAmd = {pkgs, ...}: {
    environment.systemPackages = with pkgs; [
      mesa
      vulkan-tools
      rocmPackages.rocm-smi
      rocmPackages.rocminfo
    ];
    hardware.graphics = {
      enable = true;
      enable32Bit = true;
      extraPackages = with pkgs; [
        libva-vdpau-driver
        libvdpau-va-gl
        rocmPackages.clr.icd
      ];
    };
  };
}