Already available for all major linux distros except gentoo, Is presented in debian repos. https://jami.net/
https://repology.org/project/jami/versions
well, I don't know about repology, but definitely presented in debian stable repos: https://packages.debian.org/buster/jami
There's an overlay: https://gpo.zugaina.org/Overlays/ring-overlay, source at https://github.com/stefan-langenmaier/ring-overlay It uses the old names. Jami used to be known as Ring.
Created attachment 634826 [details] necessary ebuilds to build jami Here is set of ebuilds to build jami
Created attachment 649732 [details] necessary ebuilds to build jami current jami requires development version of opendht, necessary builds updated
Created attachment 716070 [details] qt version of client. Note gtk wersion will stop working in the near future Jami team announced that they will stop support gtk client in couple of months. I think it's good idea to switch to the qt version. The corresponding ebuild is attached.
Overlay ebuild is currently only offering version 20191110.1 so it's two years old. This seems to be a nice, free (in a GPL way) and modern communication tool, pity it's not available in portage.