[Bug 2073278] Proposed package upload rejected

[Chris Halse Rogers]

An upload of ubuntu-release-upgrader to noble-proposed has been rejected
from the upload queue for the following reason: "Changing the "The
package %s is marked for removal..." string to an f"" string
unnecessarily breaks translations, and it looks like the Amharic
translation got broken (it retains the old translation, containing a
'%s' - I'm not *sure* what python will do when it hits that, but it's
not going to be what we want). Otherwise looks fine to me.".

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https://bugs.launchpad.net/bugs/2073278

Title:
  Dist-upgrade failed: 'The package 'postgresql-12' is marked for
  removal but it is in the removal deny list.'

Status in ubuntu-release-upgrader package in Ubuntu:
  Fix Released
Status in ubuntu-release-upgrader source package in Noble:
  In Progress

Bug description:
  [Impact]

  In general, when an upgrade fails because of a denied package removal
  (due to matching entry in the package removal denylist), the upgrade
  is aborted without a user-facing / friendly message.

  If a user installed a system with e.g. 20.04 and installed
  postgresql-12, then upgraded to jammy without removing postgresql-12,
  and then later attempts to upgrade to noble, the upgrade will fail
  because apt will calculate that postgresql-12 needs to be removed in
  order to satisfy all other deps.

  Hence, users in this situation will have a failed upgrade attempt and
  no helpful message.

  [Test Plan]

  Create a LXD container running Focal:

  $ lxc launch ubuntu:focal focal
  $ lxc shell focal bash

  Then, install postgresql, and upgrade to Jammy:

  $ apt install -y postgresql
  $ do-release-upgrade

  After upgrading to Jammy, attempt to upgrade to Noble:

  $ do-release-upgrade -d

  The upgrade will fail because the calculated upgrade requires removing
  postgresql-12. With the patch, a friendly message should be displayed
  explaining this.

  [Where problems could occur]

  This patch adds some extra logic when displaying a message after an
  upgrade aborts due to a problem with the calculated upgrade. Mistakes
  with this patch would probably affect the message displayed to the
  user in such cases.

  [Original Description]

  When running sudo do-release-upgrade -d
  I get follwing massage

  Checking package manager
  Reading package lists... Done
  Building dependency tree... Done
  Reading state information... Done

  Calculating the changes

  Calculating the changes

  Could not calculate the upgrade

  An unresolvable problem occurred while calculating the upgrade.

  This was likely caused by:
  * Unofficial software packages not provided by Ubuntu
  Please use the tool 'ppa-purge' from the ppa-purge
  package to remove software from a Launchpad PPA and
  try the upgrade again.

  If none of this applies, then please report this bug using the
  command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. If
  you want to investigate this yourself the log files in
  '/var/log/dist-upgrade' will contain details about the upgrade.
  Specifically, look at 'main.log' and 'apt.log'.

  Restoring original system state

  Aborting
  Reading package lists... Done
  Building dependency tree... Done

  I think already tried removed the third party packages and it is still
  not working

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: ubuntu-release-upgrader-core 1:22.04.19
  ProcVersionSignature: Ubuntu 5.15.0-116.126-generic 5.15.158
  Uname: Linux 5.15.0-116-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu82.5
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Jul 16 18:10:23 2024
  InstallationDate: Installed on 2021-02-28 (1233 days ago)
  InstallationMedia: Ubuntu 18.04.4 LTS "Bionic Beaver" - Release amd64 (20200203.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to jammy on 2024-07-16 (0 days ago)

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