Gajim nightly wont install on Ubuntu 18.* anymore
Somewhat related to #9555 (closed)
The python3-nbxmpp version in Ubuntu 18.04 and Ubuntu 18.10 is too low for the latest nightly builds. Your unstable repository contains a nightly build for python3-nbxmpp, but it's not compatible with the Gajim package because the package name differs.
Depends: python3-nbxmpp
should be changed to Depends: python3-nbxmpp | python3-nbxmpp-nightly
(or considering #9555 (closed), Depends: python3-nbxmpp (>= 0.6.9) | python3-nbxmpp-nightly (>= $GAJIM_NIGHTLY_VERSION)
)
On a related note, it would be pretty helpful if deb files for stable release versions were provided as well; https://gajim.org/downloads/1.1/ only contains the sources and Windows builds.