[X2Go-User] Fwd: x2go ppa broken for upgrade to 4.1.0.4

[Stefan Baur]

Am 01.06.23 um 15:40 schrieb Buddy Butterfly:
> Hi Stefan,
> 
> yes, you can trust me, that I always have a "clear" apt installation with
> 
> apt update
> apt dist-upgrade

And here's the issue.

a) You should not run "apt dist-upgrade". Never. "dist-upgrade" is not 
officially supported by "apt". (It is supported with "apt-get", as far 
as I know.)

b) The proper command to use instead is "apt full-upgrade", but ...

c) You should always run "apt upgrade" before attempting a more invasive 
command like "apt full-upgrade".

d) You should not use "-y" or a script containing the commands you 
listed, unless you are willing to risk breakage AND have a proper backup.

e) Read, Understand, and Think before you approve an update, especially 
if it indicates package removals (which an "apt upgrade" will never do, 
unlike an "apt full-upgrade").

> apt autoremove --purge
> apt autoclean
> apt clean

This is how I usually run manual updates on machines, usually within a 
"screen" session when I'm logged in remotely, so a natwork issue won't 
interrupt any dpkg-configure calls:

apt update
apt full-upgrade -d -y # see explanation below
apt upgrade
apt full-upgrade # optional step
apt autoremove --purge
apt clean

# Explanation: I want all packages to be available locally before
# starting the upgrade, so that any transient network failures won't
# matter. It'll either fail at the download stage already, which won't
# break anything, or it will be able to access all packages even if
# the network fails inbetween.

Again, if any of these commands throw a warning/an error, do not blindly 
continue.

IF, AND ONLY IF YOU HAVE A BACKUP THAT YOU HAVE VERIFIED TO BE WORKING:

apt update && apt full-upgrade -d -y && \
apt upgrade -y && apt full-upgrade -y && \
apt autoremove --purge && apt clean

In your case, apt upgrade should have shown that it has some packages it 
cannot upgrade due to unresolved dependencies, but should have continued 
to work. The mess only starts after using dist-upgrade/full-upgrade, 
because with that, you are actually authorizing uninstalls. It is 
basically "Yes, do as I say!"'s little brother.

Kind Regards,
Stefan Baur

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