anchor.diff:  { lib
   , buildPythonPackage
  -, cffi
   , coloredlogs
   , fetchFromGitHub
   , ghostscript
  
positive.code: , pytestCheckHook
  , pythonOlder
  , reportlab
  , setuptools
  , setuptools-scm
  , setuptools-scm-git-archive
  , stdenv
  
negative.code:     extraPostFetch = ''
        rm "$out/.git_archival.txt"
      '';
      sha256 = "sha256-K8amHifxaR/tRiQODWVZcOd5nL5zzjd8C7h5whl/HoQ=";
    };
  
    SETUPTOOLS_SCM_PRETEND_VERSION = version;
  