anchor.diff:      ];
   
       buildPhase = ''
  -      cp ${bootstrap} bootstrap.py
  -      ${python.pythonForBuild.interpreter} bootstrap.py
  +      ${python.pythonForBuild.interpreter} setup.py egg_info
         ${python.pythonForBuild.interpreter} setup.py sdist --formats=gztar
   
         # Here we untar the sdist and retar it in order to control the timestamps
  
positive.code:       owner = "pypa";
        repo = pname;
        rev = "v${version}";
        sha256 = "sha256-ZHJZiwlWLHP4vf2TLwj/DYB9wjbRp0apVmmjsKCLPq0=";
        name = "${pname}-${version}-source";
      };
  
  
negative.code: 
  let
    pname = "setuptools";
    version = "57.2.0";
  
    # Create an sdist of setuptools
    sdist = stdenv.mkDerivation rec {
  