Flint: Qt can be badly installed with some env
Noticed at l-cb184-1
(debian 8).
FYI @debionne
After some checks with many different pip version, i have installed PyQt with conda, and it was working without any trouble.
PyQt5 is now installed with pip.
That's a problem at some places, because of the operating system.
I suggest to install everything containing binary extensions with conda.
Edited by Samuel Debionne