KDE Screensharing/screencasting Issues (zkde_screencast_unstable_v1 does not seem to be available)

On KDE, with kde-plasma/xdg-desktop-portal-kde installed, you may run into issues with OBS, Discord, and other applications which use screencasting. This is usually the result of having kde-plasma/kwin compiled without the screencast USE flag.

The fix is to append your USE flags (inside of /etc/portage/make.conf). e.g.:

USE="screencast ..."

Or set it as a useflag for kwin only in /etc/portage/package.use

kde-plasma/kwin screencast ...