Comment # 4 on bug 1221521 from Felipe Oliveira

(In reply to Christophe Marin from comment #2)
> The last kup release is 3 years old, it's still using Qt5 and can't appear
> in systemsettings.

It seem's we've a new commit that solves the bug:
https://bugs.kde.org/show_bug.cgi?id=482015#c11