add templates for host specific and global overlays

hosts/configuration_desktop.nix

@@ -3,7 +3,7 @@
 #  Host-specific window manager and hardware configs are imported per-host.
 #
 
-{ config, lib, pkgs, pkgs-stable, inputs, user, location, agenix, ... }:
+{ config, lib, pkgs, inputs, user, location, agenix, ... }:
 
 {
   imports = [
@@ -32,7 +32,6 @@
     sbctl
     ausweisapp
     e2fsprogs
-  ] ++ (with pkgs-stable; [
     orca-slicer
   ]);