[Python-modules-team] Bug#944743: (no subject)

[Gordon Ball]

Confirm this bug.

I think it was introduced when upgrading to debhelper compat 12 in
6.0.0-1; dh_installsystemduser was added to the default sequence at this
level anyway.

For now I'll make it just install the unit and not auto-enable it, then
the user can selectively enable it if desired. That was the intended
behaviour.

(The gdm copy can be disabled with `systemctl --user --global disable
jupyter-notebook`)