anchor.diff:  { lib
   , buildPythonPackage
  +, setuptools
   , isPyPy
   , fetchPypi
   , pythonOlder
  
positive.code:     sha256 = "5b93c1726e50a93a033c36e5ca7fdcd29a5c7395af50a6892f5d9e7c6cfbfb29";
    };
  
    propagatedBuildInputs = [
      six
    ] ++ lib.optional (!isPyPy) [
      cffi
    ];
  
    propagatedNativeBuildInputs = lib.optional (!isPyPy) [
      cffi
    ];
  
  
negative.code: buildPythonPackage rec {
    pname = "bcrypt";
    version = "3.2.0";
    format = "pyproject";
  
    disabled = pythonOlder "3.6";
  
  