add den pattern

modules/development/devenv.nix

@@ -0,0 +1,17 @@
+{ config, lib, pkgsUnstable, ... }:
+
+let
+  dirModules = config.features.modules.development or { };
+in
+{
+  config = lib.mkIf ((dirModules.enable or false) && (dirModules.devenv.enable or true)) {
+    environment.systemPackages = with pkgsUnstable; [
+      devenv
+    ];
+
+    nix.settings.trusted-users = [
+      "root"
+      "avravels"
+    ];
+  };
+}