anchor.diff:  
   buildPythonPackage rec {
     pname = "pylast";
  -  version = "4.5.0";
  +  version = "5.0.0";
     format = "setuptools";
   
  -  disabled = pythonOlder "3.6";
  +  disabled = pythonOlder "3.7";
   
     src = fetchPypi {
       inherit pname version;
  -    sha256 = "sha256-YoALculx2trEDD1vU4xhiCGdb1OFPdxI1p2fwlZZAY8=";
  +    hash = "sha256-UBi2bCtGMtcavYEDtz5m5N0UxmCaj3un5aomxzbfLfg=";
     };
   
     nativeBuildInputs = [
  
positive.code: { lib
  , buildPythonPackage
  , certifi
  , fetchPypi
  , flaky
  , importlib-metadata
  , pytestCheckHook
  , pythonOlder
  
negative.code:   ];
  
    propagatedBuildInputs = [
      httpx
    ] ++ lib.optionals (pythonOlder "3.8") [
      importlib-metadata
    ];
  