We have been made aware of an issue in the #plasma editions for #panfrost devices.
Launching the GUI package manager #pamac results in an xorg session crash.
A workaround is to install mesa-git from the command line with:
sudo pacman -S mesa-git
(Say yes when it asks if you want to replace mesa with mesa-git)
Sorry for the trouble.
Linux Geeks doing what Linux Geeks do..