The creator said this will be added to AUR a little later …for those that use Arch, btw.

Exactly. The downside of doing it this way, I don’t believe any gnome/gtk apps will utilize the kde rounded corners from window decorations.

You can use plasma styles and window decorations that have built in rounded corners out of the box instead. You can usually find them in the macos-like themes and Deepin, I think. Also, I think Klassy has editing options in it’s window decorations to engage rounded corners if memory serves me.

Kransistor!