[Bug 905454] Re: 'postgresql-plperl-8.4' is marked for removal but it is in the removal blacklist

[Martin Pitt]

Quick summary of the problem: postgresql-8.4 and -9.1 are designed to be
co-installable, as we cannot just remove -8.4 after the upgrade to
precise. It needs to stay around so that people can migrate their 8.4
DBs to 9.1. There is a debconf note and documentation to explain how
this works.

Now, this works fine for the most part, but the problem with this
upgrade is that plperl -8.4 and -9.1 are not co-installable because
lucid to natty's 8.4 versions are built against libperl5.12, which is
not co-installable with libperl5.14.

As we don't really want to trash people's data, the easiest option would
be to reintroduce postgresql-8.4 into universe and build it against Perl
5.14. This should fix the upgrade and keep a migration path. WDYT?

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Title:
   'postgresql-plperl-8.4' is marked for removal but it is in the
  removal blacklist

Status in “update-manager” package in Ubuntu:
  Confirmed

Bug description:
  TEST CASE:
  1. Install Oneiric and apply updates
  2. Install the following packages:
    postgresql-8.4
    postgresql-plperl-8.4
  3. Upgrade to Precise

  ACTUAL RESULT
  Upgrade fails with 
  The package 'postgresql-plperl-8.4' is marked for removal but it is in the removal blacklist.

  ORIGINAL DESCRIPTION
  I am running Ubuntu 11.04 when trying to 11.10 I got the following error. I have an run a pre-release version of Ubuntu, I'm not trying to upgrade to a pre-release version of Ubuntu. It's possible that I'm using non Ubuntu packages but nothing involving Postgresql or Perl.

  Could not calculate the upgrade

  An unresolvable problem occurred while calculating the upgrade:
  The package 'postgresql-plperl-8.4' is marked for removal but it is in the removal blacklist.

   This can be caused by:
   * Upgrading to a pre-release version of Ubuntu
   * Running the current pre-release version of Ubuntu
   * Unofficial software packages not provided by Ubuntu

  If none of this applies, then please report this bug using the command
  'ubuntu-bug update-manager' in a terminal.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: update-manager 1:0.150.5.1
  ProcVersionSignature: Ubuntu 2.6.38-13.52-generic-pae 2.6.38.8
  Uname: Linux 2.6.38-13-generic-pae i686
  Architecture: i386
  Date: Fri Dec 16 14:01:53 2011
  GConfNonDefault:
   /apps/update-manager/check_new_release_ignore=
   /apps/update-manager/first_run=false
   /apps/update-manager/show_details=true
   /apps/update-manager/window_size=(1278,904)
  InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=en_US:en
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  UpgradeStatus: Upgraded to natty on 2011-12-16 (0 days ago)
  VarLogDistupgradeApttermlog:

  VarLogDistupgradeHistorylog:

  VarLogDistupgradeTermlog:

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