Huh. I haven't had any issues with libraries that use CFFI. I've had issues with pip and building from source being incredibly fragile before (in general, not

Huh. I haven't had any issues with libraries that use CFFI. I've had issues with pip and building from source being incredibly fragile before (in general, not an M1 specific thing), so I'm not that surprised, but unfortunately I don't really have any answers here. The scientific calc package + cffi have installed normally since I got the M1 (mid February). I did have an issue with PyQt5, where I had to link qmake in my .zshrc before it would build properly (and it had an incredibly unhelpful wheels error message), but that's been it so far.