Explanation of manual setup in drirc: http://lists.freedesktop.org/archives/mesa-dev/2014-May/060131.html (run udevadm on /dev/dri/cardX instead of /dev/cardX)

Requirements:

• python3
• pyqt5
• glxinfo

Build & Run:

pyuic5 gpuchooser.ui -o ui_gpuchooser.py # this is optional
./gpuchooser

Credits: https://github.com/rossengeorgiev/vdf-parser