https://packages.ubuntu.com/xenial/qt5-default
Ok... So I think I will have to reinstall all my system to be able to use FreeCAD with python 3.

How much of a problem do you think there might be with Python add-ons being py2 only or py3 only? I read here others seemed to be saying that you could write code that would work in both but I have no idea myself. If it is likely that there will be compatibility problems then perhaps another answer could be to modify the add-ons installer so that it only offers add-ons to suit the python version available, rather than making FreeCAD Py3 available everywhere where it is very difficult/impossible. Or is this pretty much a non-issue?kkremitzki wrote: ↑Sun Apr 07, 2019 4:20 pmYeah, the problem is that it's version 5.5.1 when I think 5.9+ is required.