nixos-config/machines/cherry/hardware-configuration/graphics.nix

# https://wiki.nixos.org/wiki/Accelerated_Video_Playback
{ pkgs, ... }:
{

  hardware.graphics.enable = true;
  hardware.graphics.extraPackages = with pkgs; [
    intel-media-driver # LIBVA_DRIVER_NAME=iHD
    #intel-vaapi-driver # For older processors. LIBVA_DRIVER_NAME=i965
  ];
  #hardware.graphics.enable32Bit = true;
  #hardware.graphics.extraPackages32 = with pkgs.pkgsi686Linux; [ intel-vaapi-driver ];

  environment.systemPackages = [
    pkgs.libva-utils # for CLI tools like : vainfo
  ];

}