diff --git a/modules/top-level/output.nix b/modules/top-level/output.nix
index 36a53a72..268316fc 100644
--- a/modules/top-level/output.nix
+++ b/modules/top-level/output.nix
@@ -85,6 +85,7 @@ with lib;
         {
           inherit (config)
             extraPython3Packages
+            extraLuaPackages
             viAlias
             vimAlias
             withRuby
diff --git a/tests/test-sources/modules/output.nix b/tests/test-sources/modules/output.nix
new file mode 100644
index 00000000..143b8bd4
--- /dev/null
+++ b/tests/test-sources/modules/output.nix
@@ -0,0 +1,7 @@
+{
+  extraLuaPackages = {
+    extraLuaPackages = ps: [ ps.jsregexp ];
+    # Make sure jsregexp is in LUA_PATH
+    extraConfigLua = ''require("jsregexp")'';
+  };
+}