diff --git a/pkgs/development/python-modules/clickgen/default.nix b/pkgs/development/python-modules/clickgen/default.nix
index adb441f6aa8..b74827d1971 100644
--- a/pkgs/development/python-modules/clickgen/default.nix
+++ b/pkgs/development/python-modules/clickgen/default.nix
@@ -56,6 +56,8 @@ buildPythonPackage rec {
     '';
     license = licenses.mit;
     maintainers = with maintainers; [ AdsonCicilioti ];
+    # fails with:
+    # ld: unknown option: -zdefs
     broken = stdenv.isDarwin;
   };
 }