[Bug 1826870] Re: cache.commit() doesn't release the archives lock

[Łukasz Zemczak]

Hello Julian, or anyone else affected,

Accepted python-apt into cosmic-proposed. The package will build now and
be available at https://launchpad.net/ubuntu/+source/python-apt/1.7.1 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-cosmic to verification-done-cosmic. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-cosmic. 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 for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: python-apt (Ubuntu Cosmic)
       Status: Triaged => Fix Committed

** Tags added: verification-needed verification-needed-cosmic

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https://bugs.launchpad.net/bugs/1826870

Title:
  cache.commit() doesn't release the archives lock

Status in python-apt package in Ubuntu:
  Fix Released
Status in python-apt source package in Xenial:
  Triaged
Status in python-apt source package in Bionic:
  Triaged
Status in python-apt source package in Cosmic:
  Fix Committed
Status in python-apt package in Debian:
  Fix Released

Bug description:
  [Impact]
  cache.commit() does not release all the locks it acquires as part of committing. This is a regression of locking fixes in bug 1795407.

  [Test case]
  This script should work:

  #!/usr/bin/env python
  import apt
  import subprocess

  cache = apt.Cache()
  pkg = cache["hello"]
  pkg.mark_install()
  cache.commit()
  subprocess.check_call(["apt", "remove", "--yes", "hello"])

  [Regression potential]
  Other new locking bugs could pop up

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