So I installed Plasma Unstable, by adding:
[kde-unstable] Include = /etc/pacman.d/mirrorlist
to pacman.conf. Then I thought I would downgrade back to 5.19, so I removed it, ran sudo pacman -Syyuu aannndddd nothing happened, nothing to downgrade.
sudo pacman -Syyuu
Am I losing the plot?
5.20 is now in the main repos.
That explains it, why didn’t I think of that!
mayby keep it mayby you get the first in the future