anchor.diff:  }:
   
   let
  -  version = "1.5.2";
  +  version = "1.5.3";
   in
   buildPythonPackage {
     name = "Sphinx-${version}";
  
positive.code:   src = fetchPyPi {
      package = "Sphinx";
      inherit version;
      sha256 = "049c48393909e4704a6ed4de76fd39c8622e165414660bfb767e981e7931c722";
    };
  
    propagatedBuildInputs = [
  
negative.code: { stdenv
  , buildPythonPackage
  , fetchPyPi
  , lib
  
  , alabaster
  , babel
  