anchor.diff:  { lib
   , buildPythonPackage
  +, cython
  +, devtools
   , email_validator
   , fetchFromGitHub
   , pytest-mock
  
positive.code:     sha256 = "sha256-C4WP8tiMRFmkDkQRrvP3yOSM2zN8pHJmX9cdANIckpM=";
    };
  
    propagatedBuildInputs = [
      email_validator
      python-dotenv
      typing-extensions
      ujson
    ];
  
    checkInputs = [
  
negative.code: , python-dotenv
  , pythonOlder
  , typing-extensions
  }:
  
  buildPythonPackage rec {
  