fix

modules/features/storage/default.nix

@@ -0,0 +1,5 @@
+{
+  imports = [
+    ./nfs-client.nix
+  ];
+}

modules/features/storage/nfs-client.nix

@@ -0,0 +1,13 @@
+{ lib, config, ... }:
+let
+  cfg = config.my.features.storage.nfsClient;
+in
+{
+  options.my.features.storage.nfsClient = {
+    enable = lib.mkEnableOption "NFS client support";
+  };
+
+  config = lib.mkIf cfg.enable {
+    my.system.boot.nfs.enable = true;
+  };
+}