anchor.diff:      cffi
       coloredlogs
       img2pdf
  -    importlib-resources
       pdfminer
       pikepdf
       pillow
  
positive.code: , pngquant
  , pytest-xdist
  , pytestCheckHook
  , reportlab
  , setuptools
  , setuptools-scm
  
negative.code:     reportlab
      setuptools
      tqdm
    ] ++ (lib.optionals (pythonOlder "3.8") [
      importlib-metadata
    ]) ++ (lib.optionals (pythonOlder "3.9") [
      importlib-resources
    ]);
  
    checkInputs = [
      pytest-xdist
  