anchor.diff:  
     doCheck = false;
   
  -  meta = with stdenv.lib; {
  +  meta = with lib; {
       description = "Define search patterns in bulk to perform matching on any string";
       homepage = https://github.com/Toilal/rebulk;
       license = licenses.mit;
  
positive.code: { stdenv
  , buildPythonPackage
  , fetchPyPi
  
  , pytest-runner
  , regex
  
negative.code: }:
  
  let
    inherit (lib)
      optionals;
  
    version = "0.9.0";
  in
  buildPythonPackage rec {
    name = "rebulk-${version}";
  