pakcage libossp-uuid16 1.6.2-1 failed to install/upgrade: trying to overwrite '/usr/lib/libossp-uuid++.so.16.0.22', which is also in package libossp-uuid15 0:1.6.2-0ubuntu1

Also ran into that same problem. Uninstalled libossp-uuid15, and cannot get either libossp-uuid15 or libossp-uuid16 to install. Attempting to do 'apt-get -f install' does not resolve this issue.

As a temporary workaround you can run

dpkg -i --force-overwrite /var/cache/apt/archives/libossp-uuid16_1.6.2-1_amd64.deb

The correct fix is to add

Replaces: libossp-uuid15 (>= 1.6.0~)

to libossp-uuid16's section of control file. This is because #362982

Thanks Marco.

Thanks! I've uploaded a package with this change, which subject to release manager approval will hopefully get into beta-1.

The need for this in the first place was clearly an Ubuntu mistake, and so we could simply drop this change after Lucid. We'll need to rebuild postgresql-contrib-8.4 to make sure that we can get rid of the broken libossp-uuid15 from the archive, though.

To solve that properly, we also need a no-change upload of postgresql-8.4, which currently still depends on 15.

This bug was fixed in the package ossp-uuid - 1.6.2-1ubuntu1

---------------
ossp-uuid (1.6.2-1ubuntu1) lucid; urgency=low

  * Replace libossp-uuid15 (>= 1.6.0~), due to LP #362982 (LP: #538284).
 -- Colin Watson <email address hidden> Sat, 13 Mar 2010 11:45:49 +0000

This bug was fixed in the package postgresql-8.4 - 8.4.2-2build1

---------------
postgresql-8.4 (8.4.2-2build1) lucid; urgency=low

  * Rebuild against libossp-uuid16. (Closes: #570108, LP: #538284)
 -- Martin Pitt <email address hidden> Sat, 13 Mar 2010 12:57:58 +0100