To upgrade or not to upgrade....

[Paul Howarth]

James Wilkinson wrote:
> Markku Kolkka wrote:
>> Fedora packages don't install anything in /opt, so it will be 
>> untouched in an upgrade. 
> 
> Unless the files are part of a third-party RPM that is (recorded in the
> RPM database as being) dependent on a particular version of a Fedora
> Core package. In that case, the upgrade will update the old Fedora Core
> package, and try to upgrade the third-party RPMs to a version that *can*
> co-exist with the new Core package. If it can't find any upgraded RPMs,
> it will remove them, to keep the RPM database consistent.

Is this behaviour documented somewhere, since I have yet to see it after 
a number of upgrades to FC6? I have yet to see a package removed as part 
of an upgrade if it wasn't explicitly obsoleted by another package.

Paul.