i think you're correct-- it would be more accurate to say that the built-in matplotlib does not support Qt.  as you are much more knowledgable about all these details, would you mind re-phrasing what i suggested?  also, i am not sure that the commands i gave are the absolute minimum necessary, but they are sufficient.  gfortran for example will already need to be installed to get julia itself to compile.  and perhaps scipy isn't needed?