default.nix

{ config, lib, ... }:

with lib;

{
  imports = [
    ../.
  ];

  # Fixes an issue with incorrect battery reporting. See
  # https://wiki.archlinux.org/index.php/Lenovo_ThinkPad_X1_Extreme_(Gen_2)#Invalid_Stats_Workaround
  boot.initrd.availableKernelModules = [ "battery" ];

  # New ThinkPads have a different TrackPoint manufacturer/name.
  # See also https://certification.ubuntu.com/catalog/component/input/5313/input%3ATPPS/2ElanTrackPoint/
  hardware.trackpoint.device = "TPPS/2 Elan TrackPoint";

  # Since the HDMI port is connected to the NVIDIA card.
  hardware.bumblebee.connectDisplay = true;

  nixpkgs.overlays = [
    (_self: super: {
      bumblebee = super.bumblebee.override {
        extraNvidiaDeviceOptions = ''
          Option "AllowEmptyInitialConfiguration"
        '';
      };
    })
  ];

  services.xserver = mkMerge [
    {
      # Set the right DPI. xdpyinfo says the screen is 508×285 mm but
      # it actually is 344×193 mm.
      monitorSection = ''
        DisplaySize 344 193
      '';
    }

    # To support intel-virtual-output when using Bumblebee.
    (mkIf config.hardware.bumblebee.enable {
      deviceSection = ''Option "VirtualHeads" "1"'';
      videoDrivers = [ "intel" ];
    })
  ];

  services.throttled.enable = lib.mkDefault true;
}