diff --git a/tests/test-sources/plugins/pluginmanagers/lz-n.nix b/tests/test-sources/plugins/pluginmanagers/lz-n.nix
index 8537f54425..7f07222775 100644
--- a/tests/test-sources/plugins/pluginmanagers/lz-n.nix
+++ b/tests/test-sources/plugins/pluginmanagers/lz-n.nix
@@ -1,9 +1,14 @@
 { pkgs, helpers, ... }:
 let
-  optionalPlugins = map (plugin: {
-    inherit plugin;
-    optional = true;
-  });
+  /*
+    Transform plugins into attrset and set optional to true
+    This installs the plugin files to {runtimepath}/pack/opt, instead of {runtimepath}/pack/start.
+    Plugins in pack/opt are not loaded on startup, but can be later loaded with `:packadd {name}` or `require("lz.n").load({name})`
+
+    See `nixpkgs/pkgs/applications/editors/neovim/utils.nix`
+    See `nixpkgs/pkgs/applications/editors/vim/plugins/vim-utils.nix`
+  */
+  optionalPlugins = map (x: (if (x ? plugin) then x else { plugin = x; }) // { optional = true; });
 in
 {
   # Empty configuration