IRC on Yunohost

I have Yunohost installed on a Raspberry Pi 2 and I’m trying to set up IRC.
However, Kiwiirc (installed on https://domain.org/irc) gives a 502 Bad Gateway from nginx.
Next I tried Shout so I did a dist-upgrade to Jessie, but that broke ldap and SSO.
I also searched for an IRC plugin for Owncloud, without results.
As a workaround I’m running irssi in a tmux session, but I would like to use a Yunohost app.
Any ideas?