在Archlinux上用于Matplotlib的PyQt4、PyQt5或PySide

I cannot use matplotlib anymore (on python 3.5, archlinux, kde). After a system update with pacman I got an error that PySide is not installed. When I unsuccessfully tried to install it using pip3, I found out that since PySide version 1.2.4, python 3.5 is explicitly unsupported. So after some research, I found out that PyQt4 or PyQt5 should work as well. When I try to install PyQt4 or 5 with pip3, I get the following messageI cannot use matplotlib anymore (on python 3.5,