add some new packages for gui

common-gui.nix

@@ -54,12 +54,15 @@
     ];
   };
 
-  environment.systemPackages = [
-    (pkgs.writeScriptBin "gsd-xsettings"
+  environment.systemPackages = with pkgs; [
+    (writeScriptBin "gsd-xsettings"
       ''
         #!/bin/sh
-        exec ${pkgs.gnome3.gnome-settings-daemon}/libexec/gsd-xsettings "$@"
+        exec ${gnome3.gnome-settings-daemon}/libexec/gsd-xsettings "$@"
       '')
+
+    libinput
+    libnotify
   ];
 
   # prevent satanic torture

i3.nix

@@ -25,6 +25,9 @@
     pasystray
     dconf-editor
     unclutter-xfixes
+    dunst
+
+    xorg.xev
 
     # gnome3 core packages
     desktop_file_utils shared_mime_info
@@ -74,5 +77,6 @@
 
   services.dbus.socketActivated = true;
   services.dbus.packages = with pkgs; [ dunst ];
+  systemd.packages = [ pkgs.dunst ];
 
 }