Update NixDesk

nixos/modules/desktop/gnome/default.nix

@@ -0,0 +1,57 @@
+{ config, lib, pkgs, ... }:
+
+let
+  cfg = config.sisyphus.desktop.gnome;
+in {
+  options.sisyphus.desktop.gnome.enable = lib.mkEnableOption "GNOME";
+
+  config = lib.mkIf cfg.enable {
+    services.xserver = {
+      enable = true;
+      layout = "us";
+      xkbVariant = "altgr-intl";
+
+      excludePackages = with pkgs; [
+        xterm
+      ];
+
+      displayManager.gdm.enable = true;
+      desktopManager.gnome.enable = true;
+    };
+
+    # Start a new instance of application instead of going to that window.
+    environment.systemPackages = with pkgs.gnomeExtensions; [
+      launch-new-instance
+    ];
+
+    # Do not use these packages
+    environment.gnome.excludePackages = (with pkgs; [
+      baobab
+      epiphany          # Web browser
+      evince            # Document viewer
+      gnome-connections # Remote desktop client
+      gnome-console
+      gnome-photos
+      gnome-text-editor
+      gnome-tour
+    ]) ++ (with pkgs.gnome; [
+      eog               # Image viewer
+      file-roller       # Archive manager
+      geary             # Mail client
+      gedit
+      gnome-calculator
+      gnome-calendar
+      gnome-characters
+      gnome-clocks
+      gnome-contacts
+      gnome-disk-utility
+      gnome-maps
+      gnome-music
+      gnome-system-monitor
+      gnome-weather
+      simple-scan
+      totem             # Movie player
+      yelp              # Help viewer
+    ]);
+  };
+}