[Bug 2063003] Re: package manager could not make changes to the installed system

[David Kalnischkies]

As the requirement for reproducing is "being offline" it could be that
this remove command wants to download packages, which fails.

Yes, remove can install packages – specifically the problem resolver can
try to fix a broken dependency by installing another provider/or-group
member. Controlled by `pkgProblemResolver::FixByInstall` which is
enabled by default. Once in a while I wonder if that should have been
disabled for remove commands. Or if it was a mistake to resolve an
upgrade problem 14y ago with this. Hard to tell if it does more good
than bad as that highly depends on the situation.

The other "obvious" possibility is that a maintainer script is trying to
access the network. Perhaps its intended only on install, but not
correctly guarded for the removal case.

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https://bugs.launchpad.net/bugs/2063003

Title:
  package manager could not make changes to the installed system

Status in apt package in Ubuntu:
  New

Bug description:
  This is the cause of Ubuntu Unity failing to install. Test case
  requires system to be offline.

  The full error message is:
  The package manager could not make changes to the installed system. The command <pre>apt-get --purge -q -y remove ^live-* calamares-settings-ubuntu-unity calamares zram-config cifs-utils</pre> returned error code 100.

  There are no logs in /var/log/installer or /var/crash

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