Some more work toward a modular config

users/gortium.nix

@@ -0,0 +1,10 @@
+{ pkgs, inputs, config, ... }: {
+  # Define a user account. Don't forget to set a password with ‘passwd’.
+  users.users.gortium = {
+    isNormalUser = true;
+    extraGroups = [ "wheel" "docker" ]; # Enable ‘sudo’ for the user.
+    packages = with pkgs; [
+      tree
+    ];
+  };
+}