anchor.diff:    src = fetchPyPi {
       package = "rebulk";
       inherit version;
  -    sha256 = "8c09901bda7b79a21d46faf489d67d017aa54d38bdabdb53f824068a6640401a";
  +    sha256 = "e0c69bdddccbba3ef881948ea96f1d62eda91201c306ea568a676507a30985eb";
     };
   
     propagatedBuildInputs = [
  
positive.code: { stdenv
  , buildPythonPackage
  , fetchPyPi
  
  , pytest-runner
  , regex
  
negative.code: 
    doCheck = false;
  
    meta = with lib; {
      description = "Define search patterns in bulk to perform matching on any string";
      homepage = https://github.com/Toilal/rebulk;
      license = licenses.mit;
  