Enable Plasma 6

Is there a basic working plasma 6 config I can use as a starting place? I’ve tried doing a fresh NixOS 24.05 Plasma6 installation, but failed: Plasma6 sddm login hangs

I got it booting & managed to login, but the panel is empty, I get crash log windows on most stuff I try to start and the system is utterly useless.

I was hoping to get something close to the installer iso which is working fine on my machine, but allas this doesn’t seem to be as easy as hoped.