python3Packages.websockify: disabled a broken test on darwin

pkgs/development/python-modules/websockify/default.nix

@@ -1,4 +1,5 @@
 { lib
+, stdenv
 , buildPythonPackage
 , fetchFromGitHub
 , jwcrypto
@@ -36,6 +37,12 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
+  disabledTests = lib.optionals stdenv.isDarwin [
+    # this test failed on macos
+    # https://github.com/novnc/websockify/issues/552
+    "test_socket_set_keepalive_options"
+  ];
+
   pythonImportsCheck = [
     "websockify"
   ];