{
  config,
  lib,
  pkgs,
  ...
}:

{
  config = lib.mkIf (config.beancloud.software.desktop) {
    services = {
      xserver = {
        displayManager = {
          gdm = {
            enable = if config.beancloud.hardware.steamdeck then false else true;
            wayland = true;
            autoLogin.delay = lib.mkIf config.beancloud.hardware.steamdeck 6;
          };
        };
        desktopManager.gnome = {
          enable = true;
          # example for a Gnome config not managed by the home-manager
          # extraGSettingsOverridePackages = [ pkgs.mutter ];
          # extraGSettingsOverrides = ''
          #   [org.gnome.mutter]
          #   experimental-features=['scale-monitor-framebuffer']
          # '';
        };
      };
      displayManager = {
        defaultSession = "gnome";
      };
      gnome.localsearch.enable = true;
      udev.packages = [ pkgs.gnome-settings-daemon ];
    };

    environment.systemPackages = with pkgs; [
      adwaita-icon-theme
      gnome-bluetooth
      (lib.mkIf config.beancloud.software.development gnome-boxes)
      (lib.mkIf config.beancloud.software.development gnome-builder)
      gnome-connections
      gnome-firmware
      gnomeExtensions.dash-to-dock
      gnomeExtensions.gtk4-desktop-icons-ng-ding
      gnomeExtensions.open-bar
      gnomeExtensions.no-overview
    ];

    environment.gnome.excludePackages = with pkgs; [
      gnome-tour
      gnome-initial-setup
    ];

    systemd.user.services.display-config = {
      enable = false;
      wantedBy = [ "default.target" ];
      after = [ "graphical-session.target" ];
      partOf = [ "graphical-session.target" ];
      description = "Gnome display configuration";
      unitConfig = {
        ConditionUser = "!root";
      };
      serviceConfig = {
        Type = "oneshot";
        Restart = "on-failure";
        RestartSec = "5s";
        RestartSteps = 24;
        RestartMaxDelaySec = "120s";
      };
      script = ''
        set -e
        set -u
        set -o pipefail

        export DISPLAY=:0.0
        WAIT_TIME="5s"

        sleep 15s

        if [ "''$(cat /sys/class/drm/card1-DP-1/status)" = "connected" ]; then
          ${pkgs.mutter}/bin/gdctl set --logical-monitor --primary --monitor 'DP-1' 
          sleep "''${WAIT_TIME}"

         if ! ${pkgs.mutter}/bin/gdctl show | grep -A6 'Logical monitor #1' | grep -A2 'Primary: yes' | grep 'DP-1'; then
            echo "display config not applied..."
            exit 1
         fi
        else
          ${pkgs.mutter}/bin/gdctl set --logical-monitor --primary --monitor 'eDP-1'
          sleep "''${WAIT_TIME}"

          if ! ${pkgs.mutter}/bin/gdctl show | grep -A6 'Logical monitor #1' | grep -A2 'Primary: yes' | grep 'eDP-1'; then
            echo "display config not applied..."
            exit 1
          fi
        fi

        if ${pkgs.mutter}/bin/gdctl show | grep 'Logical monitor #2'; then
            echo "display config not applied..."
            exit 1
        fi
      '';
    };
  };

  imports = [
     ./desktop.nix
  ];
}