[Bug 831768] Re: aptitude cannot handle conflicts with multiarch enabled

[Daniel Hartwig]

An update for Oneiric should also include the fixes for other serious
multi-arch issues.  At least Bug #845136 and Bug #904486.  Without these
multi-arch on that release is still effectively broken; IMO those bugs
should be nominated also for Oneiric.

The specific patches for those issues may be fairly entangled, it may be
easier to update Oneiric to at least 0.6.6 instead (currently at 0.6.4).
My time as upstream maintainer is limited and I will definitely not be
able to backport those fixes (or others that may arise) to 0.6.4.

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https://bugs.launchpad.net/bugs/831768

Title:
  aptitude cannot handle conflicts with multiarch enabled

Status in aptitude:
  Confirmed
Status in “aptitude” package in Ubuntu:
  Triaged
Status in “aptitude” source package in Oneiric:
  Triaged
Status in “aptitude” source package in Precise:
  Triaged
Status in Baltix GNU/Linux:
  Incomplete
Status in “aptitude” package in Debian:
  Unknown

Bug description:
  TEST CASE:
  1. Enable multiarch (should be automatic on new oneiric systems)
  2. Install an i386 package on amd64 (like flashplugin-installer:i386)
  3. Mark something with a lot of dependencies for installation
  4. On the confirmation screen, try to remove on of the dependencies (aptitude will now fail to perform upgrades when there's a package conflict w/out removing the i386 libs)

  This renders aptitude painful on a multiarch enabled system (default
  in oneiric).

  WORKAROUND:
  1. If you can survive without 32 bit libraries, just comment out the single line in /etc/dpkg/dpkg.cfg.d/multiarch; or
  2. Use another package manager (e.g. apt-get, synaptic, or Software Center)
  3. Disable the problem resolver by adding this line in /etc/apt/apt.conf:

  Aptitude::ProblemResolver::StepLimit "0";

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: aptitude 0.6.4-1ubuntu2
  Architecture: amd64

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