anchor.diff:      owner = "zulip";
       repo = "python-zulip-api";
       rev = version;
  -    sha256 = "sha256-gJ+YRJC6wmQzPakApOqytyPy34cS/jjzEZhRIvWUBIQ=";
  +    sha256 = "sha256-vYeZEz8nuZYL1stHLa595IbhyNbqqxH4mx7ISbqRAlA=";
     };
  -  sourceRoot = "source/zulip";
  +  sourceRoot = "${src.name}/zulip";
   
     propagatedBuildInputs = [
       requests
       matrix-client
       distro
  +    click
   
       # from requests[security]
       cryptography
  
positive.code: 
  buildPythonPackage rec {
    pname = "zulip";
    version = "0.8.0";
  
    disabled = !isPy3k;
  
  
negative.code: , requests
  , matrix-client
  , distro
  , click
  , cryptography
  , pyopenssl
  , pytestCheckHook
  