MarsSeed [1] filed a deletion request for kdesignerplugin-git [2]: Discontinued. Upstream has deleted the master branch content. [a] KDE Plasma KF6 does not continue carrying this library.
[a]: https://invent.kde.org/frameworks/kdesignerplugin [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/kdesignerplugin-git/
