Enable libinput for touchpad middle click emulation

homes/x86_64-linux/julian@aspi/packages.nix

@@ -166,4 +166,5 @@ with pkgs;
 
   nheko
   conda
+  jitsi-meet
 ]

systems/x86_64-linux/aspi/default.nix

@@ -142,6 +142,9 @@
     displayManager.gdm.enable = true;
     xkb.layout = "de";
     xkb.variant = "";
+
+    # Enable touchpad support (enabled default in most desktopManager).
+    libinput.enable = true;
   };
 
   # Configure console keymap
@@ -180,9 +183,6 @@
     jack.enable = true;
   };
 
-  # Enable touchpad support (enabled default in most desktopManager).
-  # services.xserver.libinput.enable = true;
-
   # Define a user account. Don't forget to set a password with ‘passwd’.
   users.users.julian = {
     isNormalUser = true;