anchor.diff:  
   buildPythonPackage rec {
     pname = "bleak";
  -  version = "0.18.1";
  +  version = "0.19.1";
     format = "pyproject";
   
  -  disabled = pythonOlder "3.7";
  +  disabled = pythonOlder "3.8";
   
     src = fetchFromGitHub {
       owner = "hbldh";
       repo = pname;
       rev = "refs/tags/v${version}";
  -    hash = "sha256-2/jJ2C2TudwCAshDBLUQjNMbYa2j4XfW8bXmeWrAyrA=";
  +    hash = "sha256-WNFAN8xE0ULo4fQnPFJJsc/HtrVo1ClxsvxrrhJjvI0=";
     };
   
     nativeBuildInputs = [
  
positive.code: , dbus-fast
  , fetchFromGitHub
  , poetry-core
  , pytestCheckHook
  , pythonOlder
  , typing-extensions
  
negative.code:   ];
  
    checkInputs = [
      pytest-asyncio
      pytestCheckHook
    ];
  
  