anchor.diff:  { lib
   , attrs
   , buildPythonPackage
  -, defusedxml
   , fetchFromGitHub
   , hypothesis
   , pythonOlder
  +, importlib-metadata
   , jbig2dec
   , lxml
   , mupdf
  -, packaging
   , pillow
   , psutil
   , pybind11
  
positive.code:   ];
  
    nativeBuildInputs = [
      setuptools-scm-git-archive
      setuptools-scm
    ];
  
  
negative.code:     postFetch = ''
        rm "$out/.git_archival.txt"
      '';
      hash = "sha256-nCzG1QYwERKo/T16hEGIG//PwSrpWRmKLXdj42WGyls=";
    };
  
    patches = [
  