Move mkHost helper into a separate module

modules/nixos/default.nix

@@ -1,6 +1,11 @@
-{ ... }:
+{ options, config, lib, ... }:
 {
-  imports = [
-    ./users.nix
-  ];
+  users.users = {
+    nettika = {
+      isNormalUser = true;
+      extraGroups = [ "wheel" "networkmanager" ];
+    };
+  };
+
+  networking.networkmanager.enable = true;
 }

modules/nixos/users.nix

@@ -1,9 +0,0 @@
-{ ... }:
-{
-  users.users = {
-    nettika = {
-      isNormalUser = true;
-      extraGroups = [ "wheel" "networkmanager" ];
-    };
-  };
-}