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

[Daniel Hartwig]

Also, this report does not need more comments about:

- the mention in 12.04 release notes, including the wording;
- whether the resolver is generally working or not working; or
- whether aptitude works or not with multi-arch.

I have today unmerged ~4 bugs which were not related to the issue
identified in the report description.  Some of those are fixed,
others are not.  Also removed are the watches on unrelated bugs
from bugs.d.o.

Please do not merge in other bug reports not related to multi-arch
conflict resolution as this will confuse the issue.  It is possible that
the resolver can be made more useful for m-a while still being
broken with complex conflicts in general.


** Bug watch removed: Debian Bug tracker #651748
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=651748

** Bug watch removed: Debian Bug tracker #659079
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=659079

** Bug watch removed: Debian Bug tracker #661744
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=661744

** Attachment removed: "screen shot of aptitude"
   https://bugs.launchpad.net/ubuntu/+source/aptitude/+bug/831768/+attachment/2558212/+files/Screenshot%20at%202011-10-18%2021%3A11%3A19.png

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

Title:
  aptitude cannot handle conflicts with multiarch enabled

Status in aptitude:
  New
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:
  New

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)

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: aptitude 0.6.4-1ubuntu2
  ProcVersionSignature: Ubuntu 3.0.0-9.12-generic 3.0.3
  Uname: Linux 3.0.0-9-generic x86_64
  Architecture: amd64
  Date: Tue Aug 23 00:28:38 2011
  ProcEnviron:
   PATH=(custom, no user)
   LANG=C
   SHELL=/bin/bash
  SourcePackage: aptitude
  UpgradeStatus: Upgraded to oneiric on 2011-03-06 (169 days ago)

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