anchor.diff:      qiskit-terra
       requests
       requests_ntlm
  -    websockets
  +    websocket-client
     ] ++ lib.optionals withVisualization visualizationPackages;
  +
  +  postPatch = ''
  +    substituteInPlace setup.py --replace "websocket-client>=1.0.1" "websocket-client"
  +  '';
   
     # Most tests require credentials to run on IBMQ
     checkInputs = [
  
positive.code:     pproxy
      qiskit-aer
      vcrpy
    ] ++ lib.optionals (!withVisualization) visualizationPackages;
  
    pythonImportsCheck = [ "qiskit.providers.ibmq" ];
  
negative.code:     owner = "Qiskit";
      repo = pname;
      rev = version;
      sha256 = "sha256-mVgR9vq9UpM/3VED4hpEev8YAoZY1URAxu7pVv+cjU8=";
    };
  
    propagatedBuildInputs = [
  