nixos-configuration/modules/amd-graphics.nix

{ pkgs, ... }:
{
  config = {
    boot.kernelModules = [ "amdgpu" ];
    services.xserver.videoDrivers = [ "amdgpu" ];

    hardware.graphics = {
      extraPackages = with pkgs; [ amdvlk ];
      extraPackages32 = with pkgs; [ driversi686Linux.amdvlk ];
    };

    environment.systemPackages = with pkgs; [ nvtopPackages.amd ];
  };
}