Did pacman get packagekit support
It appears using pacman on Arch is the recommended method for the repos, per this issue adding warnings: https://invent.kde.org/plasma/discover/-/merge_requests/829
or are we just talking about flatpaks here
https://apps.kde.org/discover/ ->
“With Discover, you can manage software from multiple sources, including your operating system’s software repository, Flatpak repos, the Snap store, or even AppImages from store.kde.org.”
Homeowner here, that looks about 2 weeks away from a soil erosion disaster.