anchor.diff:  , fetchPypi
   , fetchpatch
   , pytestCheckHook
  -, brotli
   , cairosvg
   , flit-core
   , fonttools
   , pydyf
   , pyphen
   , cffi
  -, cssselect
  -, lxml
  +, cssselect2
   , html5lib
  -, tinycss
  -, zopfli
  +, tinycss2
   , glib
   , harfbuzz
   , pango
  
positive.code:   ];
  
    propagatedBuildInputs = [
      brotli
      cairosvg
      cffi
      cssselect
      fonttools
      html5lib
      lxml
      flit-core
      pydyf
      pyphen
      tinycss
      zopfli
    ];
  
    checkInputs = [
      pytestCheckHook
  
negative.code: , ghostscript
  , isPy3k
  , substituteAll
  , pillow
  }:
  
  buildPythonPackage rec {
  