Plasma login manager is based off of SDDM, but with reduced requirements with the intention of then being able to deliver tighter integration with Plasma's requirements
https://invent.kde.org/plasma/plasma-login-manager Some discussions can be found at https://invent.kde.org/plasma/plasma-desktop/-/issues/91. It's also been discussed on plasma-devel since, this is following up on the official process. The incubation checklist is available on https://invent.kde.org/plasma/plasma-login-manager/-/issues/2 Some things don't really apply as it's not a traditional app. David