empathy / telepathy-butterfly conflict while trying to upgrade karmic -> lucid

[Mikhail Gusarov]

Binary package hint: update-manager

I have tried to update to 10.04 beta using 'update-manager -d'.

During "Setting new software sources" stage upgrader displayed the following error:

"Could not calculate the upgrade

An unresolvable problem occurred while calculating the upgrade:
E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages."

I tried to run 'apt-get dist-upgrade' immediately and got the following error:

[dottedmag@vertex:~]% sudo apt-get dist-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Failed
The following packages have unmet dependencies:
  telepathy-butterfly: Breaks: empathy (< 2.29.92) but 2.28.1.1-0ubuntu1 is to be installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.
[dottedmag@vertex:~]100% apt-cache policy empathy
empathy:
  Installed: 2.28.1.1-0ubuntu1
  Candidate: 2.29.93-0ubuntu2
  Version table:
     2.29.93-0ubuntu2 0
        100 http://mirror.yandex.ru lucid/main Packages
 *** 2.28.1.1-0ubuntu1 0
        100 /var/lib/dpkg/status
[dottedmag@vertex:~]% apt-cache policy telepathy-butterfly
telepathy-butterfly:
  Installed: 0.5.2-0ubuntu1
  Candidate: 0.5.7-0ubuntu1
  Version table:
     0.5.7-0ubuntu1 0
        100 http://mirror.yandex.ru lucid/main Packages
 *** 0.5.2-0ubuntu1 0
        100 /var/lib/dpkg/status

Manual installation of empathy and empathy-common fixed the problem and upgrade processed smoothly after restart.

[Tim Croydon (timcroydon)]

I can confirm this bug.

I've had the same problem under same circumstances (upgrade from Karmic to Lucid beta). Can also confirm that the suggested fix removes the problem.

T