ia32-libs-multiarch depends on gstreamer0.10-fluendo-mp3, causing problems when installing packages from partner

[Steve Langasek]

The ia32-libs-multiarch package in precise depends on gstreamer0.10-fluendo-mp3:i386. This is a real package in universe, but also a virtual package provided by both the gstreamer0.10-fluendo-plugins-mp3-partner package in partner and the commercial gstreamer0.10-fluendo-plugins available for purchase in software center. Trying to install the amd64 versions of either of these other two packages causes apt to remove gstreamer0.10-fluendo-mp3:i386, without installing the corresponding i386 package; and since gstreamer0.10-fluendo-mp3:i386 is no longer installed, ia32-libs must also be removed. This is problematic.

The justification for ia32-libs pulling in gstreamer0.10-fluendo-mp3 in the first place was for wine's benefit; and according to Scott Ritchie, this is not needed in precise. So we should drop the dependency on -fluendo- in SRU to fix this wrong conflict.

Ultimately this is a bug in apt's (and possibly dpkg's) conflicts handling for virtual multiarch:same packages, but that's not fixable in SRU.

[Test case]
1. Install ia32-libs on a 12.04 amd64 system
2. If not already enabled, enable the Canonical partner repository in software-properties-gtk3
3. Try to install the fluendo package from partner with 'sudo apt-get install gstreamer0.10-fluendo-plugins-mp3-partner'
4. Confirm that apt tries to remove ia32-libs
5. Install ia32-libs from precise-proposed
6. repeat step 3
7. Confirm that apt tries to remove gstreamer0.10-fluendo-mp3, but will leave ia32-libs installed

[Regression potential]
Dropping the dependency might cause wine to FTBFS, contrary to Scott's assurances

[Benjamin Kerensa (bkerensa)]

I have attached a patch that removes -fluendo- as a depends.

[Ubuntu Foundations Team Bug Bot (crichton)]

The attachment "fix-for-1000541.patch" of this bug report has been identified as being a patch in the form of a debdiff. The ubuntu-sponsors team has been subscribed to the bug report so that they can review and hopefully sponsor the debdiff. In the event that this is in fact not a patch you can resolve this situation by removing the tag 'patch' from the bug report and editing the attachment so that it is not flagged as a patch. Additionally, if you are member of the ubuntu-sponsors team please also unsubscribe the team from this bug report.

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[Colin Watson (cjwatson)]

Hello Steve, or anyone else affected,

Accepted ia32-libs into precise-proposed. The package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

[Bryce Harrington (bryce)]

It appears the SRU upload was done but I didn't see the patch in quantal yet, so went ahead and uploaded it there too. Thanks Benjamin!

Unsubbing sponsors since I think there's nothing more for sponsoring here...

[Launchpad Janitor (janitor)]

This bug was fixed in the package ia32-libs - 20090808ubuntu36

---------------
ia32-libs (20090808ubuntu36) precise-proposed; urgency=low

  * Drop gstreamer0.10-fluendo-mp3 from the dependencies of
    ia32-libs-multiarch; this was a late addition solely for the benefit of
    wine, which according to Scott Ritchie no longer needs it in precise,
    and the fact that there are multiple packages providing this package
    name (across universe, partner archive, and commercial ppas) means that
    trying to install one of these other packages incorrectly causes
    ia32-libs to be removed. LP: #1000541.
 -- Steve Langasek <email address hidden> Wed, 16 May 2012 21:20:21 -0700

[keepitsimpleengr (keepitsimpleengineer)]

this fixed the problem for me:

sudo apt-get install ia32-libs ia32-libs-multiarch

[Launchpad Janitor (janitor)]

This bug was fixed in the package ia32-libs - 20090808ubuntu36

---------------
ia32-libs (20090808ubuntu36) precise-proposed; urgency=low

  * Drop gstreamer0.10-fluendo-mp3 from the dependencies of
    ia32-libs-multiarch; this was a late addition solely for the benefit of
    wine, which according to Scott Ritchie no longer needs it in precise,
    and the fact that there are multiple packages providing this package
    name (across universe, partner archive, and commercial ppas) means that
    trying to install one of these other packages incorrectly causes
    ia32-libs to be removed. LP: #1000541.
 -- Steve Langasek <email address hidden> Wed, 16 May 2012 21:20:21 -0700