[Bug 1771791] Re: Need to pre-depend on stuff used by systemctl, so systemctl works in other package's preinst

[Steve Langasek]

Hello Julian, or anyone else affected,

Accepted systemd into bionic-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/systemd/237-3ubuntu10.2 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-bionic to verification-done-bionic. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-bionic. In either case, without details of
your testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Tags removed: verification-done verification-done-bionic
** Tags added: verification-needed verification-needed-bionic

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https://bugs.launchpad.net/bugs/1771791

Title:
  Need to pre-depend on stuff used by systemctl, so systemctl works in
  other package's preinst

Status in systemd package in Ubuntu:
  Fix Committed
Status in systemd source package in Bionic:
  Fix Committed
Status in systemd source package in Cosmic:
  Fix Committed
Status in systemd package in Debian:
  Fix Released

Bug description:
  [Impact]
  systemd used to pre-depend on the libraries used by systemctl or something, but now systemctl uses libsystemd-shared, and there are no pre-depends for that, meaning that systemctl fails in maintainer scripts of other packages.

  [Test case]
  Grab the apt-clone file from comment #20 in bug 1766890, and upgrade it to bionic with apt dist-upgrade -o APT::Immediate-Configure=0. Make sure to not see error about missing libraries in systemctl.

  [Regression potential]
  Installation ordering changes. Might make things harder for apt to solve.

  [Other info]
  Debian 897986

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