zaneyos/config/system/intel-nvidia.nix

{ pkgs, config, lib, gpuType,
  intel-bus-id, nvidia-bus-id, ... }:

lib.mkIf ("${gpuType}" == "intel-nvidia") { 
  nixpkgs.config.packageOverrides =
    pkgs: {
      vaapiIntel = pkgs.vaapiIntel.override {
      enableHybridCodec = true;
    };
  };
  # OpenGL
  hardware.opengl = {
    extraPackages = with pkgs; [
      intel-media-driver
      vaapiIntel
      vaapiVdpau
      libvdpau-va-gl
    ];
  };
  services.xserver.videoDrivers = ["nvidia"];
  hardware.nvidia = {
    # Modesetting is required.
    modesetting.enable = true;
    # Nvidia power management. Experimental, and can cause sleep/suspend to fail.
    powerManagement.enable = false;
    # Fine-grained power management. Turns off GPU when not in use.
    # Experimental and only works on modern Nvidia GPUs (Turing or newer).
    powerManagement.finegrained = false;
    # Use the NVidia open source kernel module (not to be confused with the
    # independent third-party "nouveau" open source driver).
    # Support is limited to the Turing and later architectures. Full list of
    # supported GPUs is at:
    # https://github.com/NVIDIA/open-gpu-kernel-modules#compatible-gpus
    # Only available from driver 515.43.04+
    # Currently alpha-quality/buggy, so false is currently the recommended setting.
    open = false;
    # Enable the Nvidia settings menu,
	# accessible via `nvidia-settings`.
    nvidiaSettings = true;
    # Optionally, you may need to select the appropriate driver version for your specific GPU.
    package = config.boot.kernelPackages.nvidiaPackages.stable;
    prime = {
      offload = {
		enable = true;
		enableOffloadCmd = true;
	  };
      # Make sure to use the correct Bus ID values for your system!
      intelBusId = "${intel-bus-id}";
      nvidiaBusId = "${nvidia-bus-id}";
    };
  };
}