[Python-modules-team] Bug#944743: jupyter-notebook: systemd user unit enabled by default, despite per-system TCP port

[Uoti Urpala]

Package: jupyter-notebook
Version: 6.0.0-1
Severity: normal

The package now seems to enable the jupyter-notebook.service user unit
by default (I think this has changed?). Due to how Debian gdm3 is
packaged, this means also starting a server for the Debian-gdm user.

Since the service listens on a TCP port, the usefulness of this default
seems questionable at best. Only one server can use the default port,
and due to the GDM issue even machines with a single human user can
have two distinct user systemd sessions. If you can't rely on the port,
no static URL will work in a browser. If you add a method to query the
right port, you could just as well start the unit at that point.