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[Mathew Hodson <mathew.hodson@xxxxxxxxx>]

** Tags added: regression-update

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https://bugs.launchpad.net/bugs/1479207

Title:
  Never-MarkAuto-Sections not working correctly

Status in apt package in Ubuntu:
  Fix Committed
Status in apt source package in Precise:
  New
Status in apt source package in Trusty:
  Fix Released
Status in apt source package in Vivid:
  New
Status in apt package in Debian:
  New

Bug description:
  [ SRU Justification ]
  Not only is this behaviour broken for every day use, but it also completely breaks livefs generation for ubuntukylin, and causes most of $flavour-desktop to be on the autoremove list in any point release livefs, making this bug point-release critical.

  [ Test Case ]
  Install a metapackage (say, ubuntu-standard), and then "apt-get --purge autoremove ubuntu-standard" and check that only that package is removed, rather than large chunks of its dependencies.

  Further, also run the test case from comment 2 of bug #1429041 and
  make sure the previous fix didn't regress.

  [ Regression Potential ]
  My fix was tested locally against both test cases and passes with flying colours, so I don't see how this can make things any worse than they already are.

  [ Original Report ]
  In current trusty, vivid, and wily, when you install ubuntu-minimal (from the "metapackages" section) in a clean chroot, some 75ish packages are installed.  If you then "apt-get --purge autoremove ubuntu-minimal", some large portion (between 20 and 40, depending on the target release) of those dependencies are removed again.

  If this test is repeated putting the release pocket version of
  apt/libapt on hold, the purge/autoremove only removes the metapackage,
  but none of its dependencies, so this is likely a regression brought
  on from the previous autoremoval fix.

  This bug is release-critical for the 14.04.3 point release, as we
  install using metapackages instead of tasks in point releases, thus
  meaning that anyone removing ubuntu-desktop for any reason will end up
  with dozens (potentially hundreds) of packages on the autoremoval
  list.

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