[Bug 2076913] Re: 'DistUpgradeController' object has no attribute 'force_obsoletes'

[Launchpad Bug Tracker]

This bug was fixed in the package ubuntu-release-upgrader - 1:24.04.22

---------------
ubuntu-release-upgrader (1:24.04.22) noble; urgency=medium

  [ Tobias Heider ]
  * Fix typo in force_obsoletes. (LP: #2076913)

  [ Nick Rosbrook ]
  * DistUpgrade: handle cache key error when removing obsolete packages
    (LP: #2077358)
  * deb2snap: switch snap-store and firmware-updater tracks
    (LP: #2077344)
  * Run pre-build.sh: updating mirrors, demotions, and translations.

ubuntu-release-upgrader (1:24.04.21) noble; urgency=medium

  * DistUpgradeQuirks: disable stub resolver on upgrades from jammy
    (LP: #2043820)
  * DistUpgrade: show a message about denied package removals
    (LP: #2073278)
  * data: add cryptsetup-initramfs to removal_denylist.cfg
    (LP: #2067622)
  * DistUpgradeQuirks: abort if system is not /usr-merged
    (LP: #2058648)
  * DistUpgradeQuirks: disable cloud-init on upgrade
    (LP: #2075968)
  * DistUpgradeQuirks: abort if rabbitmq-server installed
    (LP: #2074309)
  * Run pre-build.sh: updating mirrors, demotions, and translations.

ubuntu-release-upgrader (1:24.04.20) noble; urgency=medium

  [ Mate Kukri ]
  * DistUpgradeQuirks: make sure GRUB "cloud_style_installation" is set in cloud images (LP: #2054103)

  [ Julian Andres Klode ]
  * Move the actiongroup out of the obsoletes loop
  * Reimplement obsolete removal with resolve_by_keep (LP: #1874272)

  [ Nick Rosbrook ]
  * Run pre-build.sh: updating mirrors, demotions, and translations.

 -- Nick Rosbrook <enr0n at ubuntu.com>  Wed, 21 Aug 2024 12:55:15 -0400

** Changed in: ubuntu-release-upgrader (Ubuntu Noble)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/2076913

Title:
  'DistUpgradeController' object has no attribute 'force_obsoletes'

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

Bug description:
  [Impact]

  It looks like the latest SRU has introduced a bug in
  https://git.launchpad.net/ubuntu-release-
  upgrader/commit/?id=8c592abdf5047a6bd4da20dab1e444c6dcf8c842

  There is a typo in s/force_obosoletes/forced_obsoletes/ which causes upgrades from noble to oracular to
  fail:

    File "/tmp/ubuntu-release-upgrader-l77uthwp/DistUpgrade/DistUpgradeController.py", line 1578, in doPostUpgrade
      if pkgname in self.foreign_pkgs and pkgname in self.force_obsoletes:
                                                     ^^^^^^^^^^^^^^^^^^^^
  AttributeError: 'DistUpgradeController' object has no attribute 'force_obsoletes'. Did you mean: 'forced_obsoletes'?

  [Test Plan]

  This code path is only hit when some "foreign" packages are installed,
  e.g. from a PPA. The best way to reproduce this is to install a
  package from a PPA and then perform an upgrade. I created
  https://launchpad.net/~enr0n/+archive/ubuntu/lp2076913 for convenience
  in testing.

  $ apt-add-repository -y ppa:enr0n/lp2076913
  $ apt install -y hello
  $ do-release-upgrade -d

  On an affected system, the AttributeError would be shown during the
  searching for obsoletes stage. One should confirm that some "foreign"
  packages were logged, otherwise the code path would not be taken:

  $ grep "Foreign" /var/log/dist-upgrade/main.log

  [Where problems could occur]

  The patch changes the typo self.force_obsoletes to the correct
  self.forced_obsoletes. Another typo would lead to the same problem!

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