[Bug 824708] Re: aptitude can no longer show changelogs: "Changelog download failed: Download queue destroyed."

[Clint Byrum]

Hello zigi, or anyone else affected,

Accepted aptitude into precise-proposed. The package will build now and
be available at
http://launchpad.net/ubuntu/+source/aptitude/0.6.6-1ubuntu1.1 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 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 change the bug tag from
verification-needed to verification-done.  If it does not, change the
tag to verification-failed.  In either case, details of your testing
will help us make a better decision.

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

** Tags added: verification-needed

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https://bugs.launchpad.net/bugs/824708

Title:
  aptitude can no longer show changelogs: "Changelog download failed:
  Download queue destroyed."

Status in “aptitude” package in Ubuntu:
  Fix Released
Status in “aptitude” source package in Precise:
  Fix Committed
Status in “aptitude” package in Debian:
  Fix Released

Bug description:
  Aptitude (<< 0.6.8) can't download/view package changelogs with
  libapt-pkg (>= 0.8.16~exp3).  This affects both the command line
  interface and the interactive (ncurses) interface.

  Viewing a packages changelog is a significant part of deciding which
  updates to apply.  Although the changelogs can still be viewed using
  apt-get, it is a great inconvenience to no longer be able to do this
  from aptitude's interactive interface.

  [Test Case]

  * An unrelated issue in aptitude requires deb-src lines to fetch
    changelogs from the command line. Ensure the system has some valid
    deb-src lines:

    $ sudo echo "deb-src http://archive.ubuntu.com/ubuntu/ precise main" >> /etc/apt/sources.list
    $ sudo apt-get update
    […]

  * Choose a package, say python-apt, and verify the changelog is
    available with apt-get:

    $ apt-get changelog python-apt
    Get:1 Changelog for python-apt (http://changelogs.ubuntu.com/changelogs/pool/main/p/python-apt/python-apt_0.8.0ubuntu7/changelog) [109 kB]
    Fetched 109 kB in 0s (370 kB/s)

  * Attempt to fetch the same changelog using aptitude:

    $ aptitude changelog python-apt
    Err Changelog of python-apt
    E: Changelog download failed: Download queue destroyed.
    E: Couldn't find a changelog for python-apt

  [Regression Potential]

  Small.

  * Moderate size patch which is mostly trivial updates of types to
    unsigned long long as used in libapt-pkg.

  * The updated module is only used to acquire changelogs[1], so any
    regression is likely to be limited to interacting with changelogs.

  * Fixed in Debian sid since June with no regressions reported.

  [1] The module is also used to acquire screenshots by the experimental
      GTK+ interface which is no longer developed and was never
      considered supported by upstream.

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