anchor.diff:      imagesize
       jinja2
       pygments
  +    requests
       six
       snowballstemmer
     ];
  
positive.code:   src = fetchPyPi {
      package = "Sphinx";
      inherit version;
      sha256 = "82cd2728c906be96e307b81352d3fd9fb731869234c6b835cc25e9a3dfb4b7e4";
    };
  
    propagatedBuildInputs = [
  
negative.code: , imagesize
  , jinja2
  , pygments
  , requests
  , six
  , snowballstemmer
  }:
  
  let
    version = "1.5";
  in
  buildPythonPackage {
    name = "Sphinx-${version}";
  