off the top of my head, python-qt4 sounds like a UI toolkit library, most likely not needed for fastai.
Perhaps it’s used by some graphical libs, hard to tell, but I doubt it’s directly needed by fastai work.
When in these sort of confusions, I’d say just remove/comment those out, and see if it throws an error down the road. Dependencies sometimes can be tricky, but in this case it’s probably just a case of accumulation over time. cc @mike.moloch !