refactor

modules/system/utils/npm/default.nix

@@ -0,0 +1,17 @@
+{
+  config,
+  lib,
+  ...
+}: let
+  inherit (lib) mkIf mkEnableOption;
+  cfg = config.system.utils.npm;
+in {
+  options = {
+    system.utils.npm.enable = mkEnableOption "Enables npm";
+  };
+  config = mkIf cfg.enable {
+    programs.npm = {
+      enable = true;
+    };
+  };
+}