I’ve had troubles getting the Wallpaper Engine plugin for KDE Plasma to work.
TL;DR: Got WE install in Steam, got the steam library linked in the plugin, and also had to install python websockets for it to “work.” I’m finally able to see my wallpapers in the plugin, but something is very wrong with how they are getting applied. I’m attaching relevant screenies.
Also for reference: Wallpaper Engine “wallpapers” consist of a thumbnail, a .JSON, and a .pkg
If there’s a different KDE plugin that can use this format, that would work too.