diff --git a/pkgs/development/lisp-modules/quicklisp-to-nix/nix-package.emb b/pkgs/development/lisp-modules/quicklisp-to-nix/nix-package.emb
index 1be5345b3277..3a0070509247 100644
--- a/pkgs/development/lisp-modules/quicklisp-to-nix/nix-package.emb
+++ b/pkgs/development/lisp-modules/quicklisp-to-nix/nix-package.emb
@@ -11,4 +11,11 @@ rec {
     url = ''<% @var url %>'';
     sha256 = ''<% @var sha256 %>'';
   };
+
+  overrides = x: {
+    postInstall = ''
+        echo "$CL_SOURCE_REGISTRY"
+        NIX_LISP_PRELAUNCH_HOOK='nix_lisp_run_single_form "(asdf:load-system :<% @ifnotempty testname %><% @var testname %><% @else %><% @var name %><% @endif %>)"' "$out/bin/<% @var filename %>-lisp-launcher.sh" ""
+    '';
+  };
 }