Cardinal is software project that integrates Rack with DPF to provide VST/LV2 plugins and a JACK app. It comes with a set of compiled-in rather than downloaded modules, and the LV2/JACK builds allow use of those systems native software CV ports.
There’s a few rough edges still being worked out, but things are mostly working. Because various Rack assets currently have a Non Commercial licence, no Linux distribution can provide a binary package for it, though that has already been the case for Rack itself. Arch and Arch-derived distro users can check the AUR.
For chat there is an IRC channel on libera that is also accessible via Matrix.