anchor.diff:        --replace docs/README.md README.md
     '';
   
  -  checkInputs = [ pytest ] ++ lib.optionals stdenv.isLinux [ xclip xvfb-run ];
  +  checkInputs = [
  +    pytest
  +  ] ++ lib.optionals stdenv.isLinux [
  +    xclip
  +    xvfb-run
  +  ];
   
     checkPhase = ''
       runHook preCheck
  
positive.code: , fetchFromGitHub
  , buildPythonPackage
  , pytest
  , xclip
  , xvfb-run
  }:
  
negative.code: buildPythonPackage rec {
    pname = "pyclip";
    version = "0.6.0";
    format = "setuptools";
  
    disabled = pythonOlder "3.7";
  
    src = fetchFromGitHub {
      owner = "spyoungtech";
      repo = pname;
      rev = "v${version}";
      hash = "sha256-NCWmCp4VGwwvubqN8FUUJ0kcZbXjOEyB6+BfGky1Kj4=";
    };
  
    postPatch = ''
  