nixos/system/hardware.nix

{ config, pkgs, ... }:
{

  nixpkgs.config.packageOverrides = pkgs: {
    intel-vaapi-driver = pkgs.intel-vaapi-driver.override { enableHybridCodec = true; };
  };
  hardware = {
    enableRedistributableFirmware = true;
    cpu.intel.updateMicrocode = true;
    opengl = {
      enable = true;
      driSupport = true;
      driSupport32Bit = true;
      extraPackages = with pkgs; [
        intel-media-driver
        intel-vaapi-driver
        libvdpau-va-gl
      ];
    };
    ckb-next.enable = true;
    nvidia = {
      modesetting.enable = true;
      powerManagement.enable = false;
      powerManagement.finegrained = false;
      open = false;
      nvidiaSettings = true;
      package = config.boot.kernelPackages.nvidiaPackages.beta;
    };
    pulseaudio.enable = false;
  };
  environment.sessionVariables = { LIBVA_DRIVER_NAME = "iHD"; };
}