Quassel is a modern, cross-platform, distributed IRC client. One
(or multiple) client(s) can attach to and detach from a central core. It's
much like the popular combination of screen and a text-based IRC client such
as WeeChat, but graphical.
Enable snaps on Debian and install Quassel Client/ Server
Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.
Enable snapd
On Debian 9 (Stretch) and newer, snap can be installed directly from the command line: