tests/modules-performance: add nvim-cmp to extraPlugins when necessary

Author: GaetanLepage

tests/test-sources/modules/performance/combine-plugins.nix

@@ -64,6 +64,8 @@ in
       extraPlugins = with pkgs.vimPlugins; [
         # Depends on nvim-cmp
         cmp-dictionary
+        # We have to manually add cmp-dictionary's dependence: nvim-cmp
+        nvim-cmp
         # Depends on telescope-nvim which itself depends on plenary-nvim
         telescope-undo-nvim
       ];
@@ -332,6 +334,8 @@ in
         telescope-nvim
         # Only its dependency (nvim-cmp) won't be combined, but not the plugin itself
         cmp-dictionary
+        # We have to manually add cmp-dictionary's dependence: nvim-cmp
+        nvim-cmp
         # More plugins
         gitsigns-nvim
         luasnip