I think that the problem is rather a configuration issue than a missing
dependency.
If you look at the upgrade log:
- The reporter installed odbcinst and libvirt 6.1.0-0ubuntu2 (pre-release
version of Lucid)
- Then he removed odbcinst somewhere between 2010-02-15 and 2010-02-28.
- And finally upgraded to libvirt 6.1.0-0ubuntu3 resulting in the installation
failure.
The debconf value libvirtodbc0/register-odbc-driver was set to 'true' during
the first installation and remained 'true' after the removal of odbcinst
breaking the postinst and prerm scripts.
There is a logical problem there:
- in libvirtodbc0.config, it tests if odbcinst exists to ask and set the
debconf value libvirtodbc0/register-odbc-driver
- then the maintainer scripts use this debconf value to decide if it must
register the driver with odbcinst.
- So, if odbcinst is removed, and libvirtodbc0 is removed or upgraded
afterwards, the prerm or postinst script will fail.
Firstly, we should be consistent here, and the fix would be to use the same
logic in the postinst and prerm than in the .config file. I mean testing the
availability of odbcinst before calling it.
Secondly, odbcinst is just a helper and should be recommended rather than a
strong dependency.
** Changed in: virtuoso-opensource (Ubuntu Lucid)
Status: Fix Committed => Incomplete
--
package libvirtodbc0 6.1.0-0ubuntu3 failed to install/upgrade:
https://bugs.launchpad.net/bugs/529562
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