[Bug 1974196] Re: Installing libudev1 on a new Jammy installation uninstalls many packages.

[Launchpad Bug Tracker]

This bug was fixed in the package apt - 2.5.2

---------------
apt (2.5.2) unstable; urgency=medium

  [ Julian Andres Klode ]
  * Mark broken reverse depends for upgrade (LP: #1974196)
  * Upgrade all binaries in a source package

  [ Michael Vogt ]
  * apt-pkg: (re)export pkgTagSection::Key to fix FTBFS in python-apt
    (Closes: #1011678)

 -- Julian Andres Klode <jak at debian.org>  Sun, 24 Jul 2022 17:57:24
+0200

** Changed in: apt (Ubuntu Kinetic)
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1974196

Title:
  Installing libudev1 on a new Jammy installation uninstalls many
  packages.

Status in apt package in Ubuntu:
  Fix Released
Status in apt source package in Jammy:
  Fix Committed
Status in apt source package in Kinetic:
  Fix Released

Bug description:
  [Impact]
  On an Ubuntu 22.04 desktop system created using the current installation image without enabling package updates over the network, installing the package libudev1 results in a large number of critical packages being removed and rendering the system essentially unusable.

  [Test plan]
  Comprehensive regression test suite validating a full solver dump with the issue is run as autopkgtest.

  [Where problems could occur]
  We could break other things from resolving. The solver is a bit finicky. Hopefully this is isolated enough.

  [Other info]

  https://github.com/tfoote/udevdebug/blob/main/Dockerfile is a Dockerfile which also demonstrates the issue.
  Building the image, which will install udev 249.11-0ubuntu3 and init 1.62, and then running `apt install libudev1` in the generated image results in

  The following packages will be REMOVED:
    libnss-systemd libpam-systemd systemd-timesyncd udev
  The following packages will be upgraded:
    libudev1

  This is completely prevented by ensuring that updates are installed
  from the jammy-updates repository before installing any additional
  packages and that is almost certainly the correct thing to do. But
  this is a punishing result for such a mistake.

  I would expect the installation to either force the upgrade of the
  other systemd packages or refuse to install libudev1 at the incorrect
  version relative to the other systemd packages until the system is
  upgraded.

  We found this out via a user report for ROS 2 Humble which is
  releasing on top of Ubuntu 22.04 next week:
  https://github.com/ros2/ros2/issues/1272

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