@almarklein I also get issues when I add `glfw` to this list.

You have mentioned that you're getting segfaults. Can you try uncommenting *all* glfw tests in `test_app.py` to see if the segfaults go away? I tried to fix some `glfw` segfaulting issues, but it's possible I missed some. This is what I mean about narrowing down the causes -- if commenting out all `glfw` tests gets rid of your segfaults (but leaving `glfw` in while commenting out, say, `qt` does not), then it's likely that our `glfw` code has some problems we can try to fix.