Lot of change on structs

modules/system/nixos/networks/printing.nix

@@ -0,0 +1,21 @@
+{
+  lib,
+  config,
+  ...
+}:
+with lib;
+let
+  cfg = config.os.networks.printing;
+in
+{
+  options.os.networks.printing = {
+    enable = mkEnableOption "System printing service";
+  };
+  config = mkIf cfg.enable {
+
+    services.printing = {
+      enable = true;
+    };
+
+  };
+}