anchor.diff:  
   buildPythonPackage rec {
     pname = "zeroconf";
  -  version = "0.38.5";
  +  version = "0.38.6";
     format = "setuptools";
   
     disabled = pythonOlder "3.7";
  
positive.code:     "test_launch_and_close_v4_v6"
      "test_launch_and_close_v6_only"
      "test_integration_with_listener_ipv6"
      # Starting with 0.38.5: AssertionError: assert [('add', '_ht..._tcp.local.')]
      "test_service_browser_expire_callbacks"
    ] ++ lib.optionals stdenv.isDarwin [
      "test_lots_of_names"
  
negative.code:     owner = "jstasiak";
      repo = "python-zeroconf";
      rev = version;
      hash = "sha256-P5yAXh/5J5/giOZTOuk9ay3PF8MNxPOJgtoWeX7xxFk=";
    };
  
    propagatedBuildInputs = [
  