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[Steve Langasek <steve.langasek@xxxxxxxxxxxxx>]

This is reproducible as well with 'apt-get dist-upgrade'; ubuntu-
release-upgrader simply bails instead of letting a "wrong" upgrade path
be calculated, but the removal of unity is reproducible with simple apt-
get.

We can hint more strongly to apt that unity should be upgraded and
unity-common should be removed by adding an additional Breaks: unity-
common (<< 7.1.2) from another unity package lower in the stack - such
as libunity9.

** Package changed: ubuntu-release-upgrader (Ubuntu) => libunity
(Ubuntu)

** Changed in: libunity (Ubuntu)
     Assignee: Canonical Foundations Team (canonical-foundations) => Steve Langasek (vorlon)

** Also affects: libunity (Ubuntu Saucy)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1241420

Title:
  unity held back if ubuntu-desktop is not installed during upgrade from
  raring to saucy (upgrade fails)

Status in “libunity” package in Ubuntu:
  Triaged
Status in “libunity” source package in Saucy:
  New

Bug description:
  TEST CASE:
  1. On a minimal installation of Ubuntu Raring install unity (without ubuntu-desktop)
  2. Run: do-release-upgrade -m desktop

  ACTUAL RESULT:
  The system cannot upgrade because unity is removed due to the followinf resolution:

  Investigating (0) libunity-core-6.0-8 [ amd64 ] < none -> 7.1.2+13.10.20131014.1-0ubuntu1 > ( libs )
  Broken libunity-core-6.0-8:amd64 Conflicts on unity-common [ amd64 ] < 7.0.0daily13.06.19~13.04-0ubuntu1 > ( gnome )
    Considering unity-common:amd64 3 as a solution to libunity-core-6.0-8:amd64 2
    Holding Back libunity-core-6.0-8:amd64 rather than change unity-common:amd64
  [...]
  Investigating (0) unity [ amd64 ] < 7.0.0daily13.06.19~13.04-0ubuntu1 -> 7.1.2+13.10.20131014.1-0ubuntu1 > ( gnome )
  Broken unity:amd64 Depends on libunity-core-6.0-8 [ amd64 ] < none -> 7.1.2+13.10.20131014.1-0ubuntu1 > ( libs ) (= 7.1.2+13.10.20131014.1-0ubuntu1)
    Considering libunity-core-6.0-8:amd64 2 as a solution to unity:amd64 0
    Removing unity:amd64 rather than change libunity-core-6.0-8:amd64


  Original Report

  /var/log/dist-upgrade/main.log

  2013-10-18 10:25:25,166 DEBUG blacklist expr 'unity$' matches 'unity'
  2013-10-18 10:25:25,166 DEBUG The package 'unity' is marked for removal but it's in the removal blacklist
  2013-10-18 10:25:59,444 ERROR Dist-upgrade failed: 'The package 'unity' is marked for removal but it is in the removal blacklist.'

  I have not installed the xorg-edgers  ppa (only gnome3 from
  gnome3-team).

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: ubuntu-release-upgrader-core 1:0.192.13
  ProcVersionSignature: Ubuntu 3.8.0-31.46-generic 3.8.13.8
  Uname: Linux 3.8.0-31-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8.3
  Architecture: amd64
  CrashDB: ubuntu
  Date: Fri Oct 18 10:26:09 2013
  InstallationDate: Installed on 2011-11-09 (708 days ago)
  InstallationMedia: Xubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  MarkForUpload: True
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to raring on 2013-10-18 (0 days ago)
  VarLogDistupgradeTermlog:

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