NixOS-Configuration/desktop-environment.nix

{ config, pkgs, ... }:
{
  # Enable the X11 windowing system.
  services.xserver.enable = true;

  # Enable the GNOME Desktop Environment.
  services.xserver.displayManager.gdm.enable = true;
  services.xserver.desktopManager.gnome.enable = true;

  # Configure keymap in X11
  services.xserver = {
    layout = "us";
    xkbVariant = "altgr-intl";
  };

  services.xserver.libinput.enable = true;

  services.udev.packages = with pkgs; [ gnome.gnome-settings-daemon ];
}