anchor.diff:  
   buildPythonPackage rec {
     pname = "imap-tools";
  -  version = "0.52.0";
  +  version = "0.54.0";
   
     disabled = isPy27;
   
  
positive.code:     owner = "ikvk";
      repo = "imap_tools";
      rev = "v${version}";
      hash = "sha256-la2+cpTnHZQn/FXtySp+3zDCBTONiLC16Tm+hDiIERc=";
    };
  
    checkInputs = [
  
negative.code:   meta = with lib; {
      description = "Work with email and mailbox by IMAP";
      homepage = "https://github.com/ikvk/imap_tools";
      changelog = "https://github.com/ikvk/imap_tools/blob/v${version}/docs/release_notes.rst";
      license = licenses.asl20;
      maintainers = with maintainers; [ dotlambda ];
    };
  