[Bug 1000541] Re: ia32-libs-multiarch depends on gstreamer0.10-fluendo-mp3, causing problems when installing packages from partner

[Steve Langasek]

** Description changed:

  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

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https://bugs.launchpad.net/bugs/1000541

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

Status in “ia32-libs” package in Ubuntu:
  Triaged
Status in “ia32-libs” source package in Precise:
  Fix Committed
Status in “ia32-libs” source package in Quantal:
  Triaged

Bug description:
  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

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