anchor.diff:  
   buildPythonPackage rec {
     pname = "igraph";
  -  version = "0.9.9";
  +  version = "0.9.10";
   
     disabled = pythonOlder "3.6";
   
  
positive.code:   meta = with lib; {
      description = "High performance graph data structures and algorithms";
      homepage = "https://igraph.org/python/";
      license = licenses.gpl2Plus;
      maintainers = with maintainers; [ MostAwesomeDude dotlambda ];
    };
  
negative.code:     owner = "igraph";
      repo = "python-igraph";
      rev = version;
      hash = "sha256-c20N8BtbQGxAK7ykQvyfqWYu7wVOlYfeGpNOwWPlGxs=";
    };
  
    nativeBuildInputs = [
  