[Bug 1036794] Re: unmet dependencies during update of nspr4: libnspr4 : Breaks: evolution-plugins (< 3.2.0-0ubuntu2) but 2.32.2-0ubuntu7 is to be installed

[Victor Thompson]

I had this same problem I resolved it by removing the evolution-plugins
package from the stale distribution.

sudo apt-get remove evolution-plugins

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Title:
  unmet dependencies during update of nspr4: libnspr4 : Breaks:
  evolution-plugins (< 3.2.0-0ubuntu2) but 2.32.2-0ubuntu7 is to be
  installed

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

Bug description:
  Could not calculate the upgrade

  An unresolvable problem occurred while calculating the upgrade.

  Please report this bug against the 'update-manager' package and include the following error message:
  'E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.'

  Package dependencies cannot be resolved

  This error could be caused by required additional software packages
  which are missing or not installable. Furthermore there could be a
  conflict between software packages which are not allowed to be
  installed at the same time.

  The following packages have unmet dependencies:

  libnspr4:

  Trace from Resolver:
  Investigating (9) libnspr4 [ i386 ] < 4.8.9-1ubuntu2 -> 4.8.9-1ubuntu2.1 > ( libs )
  Broken libnspr4:i386 Breaks on evolution-plugins [ i386 ] < 2.32.2-0ubuntu7 -> 3.2.3-0ubuntu6 > ( gnome ) (< 3.2.0-0ubuntu2)
    Considering evolution-plugins:i386 3 as a solution to libnspr4:i386 128
    Upgrading evolution-plugins:i386 due to Breaks field in libnspr4:i386
  Investigating (9) evolution-plugins [ i386 ] < 2.32.2-0ubuntu7 -> 3.2.3-0ubuntu6 > ( gnome )
  Broken evolution-plugins:i386 Depends on evolution [ i386 ] < none -> 3.2.3-0ubuntu6 > ( gnome ) (= 3.2.3-0ubuntu6)
    Considering evolution:i386 5 as a solution to evolution-plugins:i386 3
    Holding Back evolution-plugins:i386 rather than change evolution:i386
  Done
  Failed
  The following packages have unmet dependencies:
   libnspr4 : Breaks: evolution-plugins (< 3.2.0-0ubuntu2) but 2.32.2-0ubuntu7 is to be installed

  
  ----------------
  1. Description:	Ubuntu 12.04.1 LTS
  Release:	12.04
  ---------------
  2. apt-cache policy libnspr4
  libnspr4:
    Installed: 4.8.9-1ubuntu2
    Candidate: 4.8.9-1ubuntu2.1
    Version table:
       4.8.9-1ubuntu2.1 0
          500 http://us.archive.ubuntu.com/ubuntu/ precise-updates/main i386 Packages
   *** 4.8.9-1ubuntu2 0
          500 http://us.archive.ubuntu.com/ubuntu/ precise/main i386 Packages
          100 /var/lib/dpkg/status
  ----------------
  3. Update Manager should work properly

  4. Update Manager Could not calculate the upgrade

  An unresolvable problem occurred while calculating the upgrade.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: update-manager 1:0.156.14.9
  ProcVersionSignature: Ubuntu 3.2.0-29.46-generic 3.2.24
  Uname: Linux 3.2.0-29-generic i686
  ApportVersion: 2.0.1-0ubuntu12
  Architecture: i386
  CurrentDmesg.txt:
   [   49.935139] r8169 0000:01:00.0: eth0: link up
   [   49.935343] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
   [   51.500059] init: plymouth-stop pre-start process (1860) terminated with status 1
   [   59.560012] lxcbr0: no IPv6 routers present
   [   59.952011] eth0: no IPv6 routers present
  Date: Wed Aug 15 00:22:38 2012
  GsettingsChanges:
   com.ubuntu.update-manager first-run false
   com.ubuntu.update-manager launch-time 1344969604
   com.ubuntu.update-manager show-details true
   com.ubuntu.update-manager window-height 664
   com.ubuntu.update-manager window-width 525
  PackageArchitecture: all
  SourcePackage: update-manager
  UpgradeStatus: Upgraded to precise on 2012-03-09 (158 days ago)

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