complete rework

modules/user.nix

@@ -0,0 +1,34 @@
+{
+  config,
+  lib,
+  options,
+  ...
+}:
+with lib; let
+  cfg = config.user;
+in {
+  options.user = {
+    username = mkOption {
+      type = types.str;
+      description = "The username of the user";
+    };
+    home-manager = mkOption {
+      type = options.home-manager.users.type.functor.wrapped;
+    };
+  };
+
+  config = {
+    users.users.${cfg.username} = {
+      isNormalUser = true;
+      extraGroups = ["wheel"];
+      initialPassword = "a";
+    };
+
+    home-manager = {
+      useUserPackages = true;
+      useGlobalPkgs = true;
+    };
+    home-manager.users.${cfg.username} = mkAliasDefinitions options.user.home-manager;
+    user.home-manager.home.stateVersion = config.system.stateVersion;
+  };
+}