[Bug 816807] Re: Upgrade of packages with conflicts results in removal instead of upgrade

[Julian Andres Klode]

That's an APT bug. It's fixed in Debian, I need to investigate whether
the fix is in Ubuntu.

** Package changed: python-apt (Ubuntu) => apt (Ubuntu)

** Changed in: apt (Ubuntu)
       Status: New => In Progress

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https://bugs.launchpad.net/bugs/816807

Title:
  Upgrade of packages with conflicts results in removal instead of
  upgrade

Status in “apt” package in Ubuntu:
  In Progress

Bug description:
  Affected version: 0.7.94.2ubuntu6.2 (Lucid Lynx)

  Upgrading a package may lead to partial removal of other upgradeable
  packages.

  Situation before upgrade:

  Installed packages:
  * A (version 1)
  * B (version 1)

  Available packages:
  * A (version2, Conflicts: B (<< 2)
  * B (version 2)

  If you run pkg.mark_upgrade() on pkg A (Version 1) package B will be
  marked for removal instead of marked for upgrade.

  Real life example: 
  Installed packages:
  * libpcsc-lite1 (Version 1.5.3-1ubuntu4.1)
  * pcscd (Version 1.5.3-1ubuntu4.1)

  Available packages:
  * libpcsc-lite1 (Version 1.5.3-1ubuntu4.2)
  * pcscd (Version 1.5.3-1ubuntu4.2)

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