Improve the way rpm decides what is newer

[nodata]

Am 2009-11-21 11:00, schrieb drago01:
> On Sat, Nov 21, 2009 at 10:49 AM, Conrad Meyer<cemeyer at u.washington.edu>  wrote:
>> On Saturday 21 November 2009 01:38:35 am drago01 wrote:
>>> We should just use release epochs, people might hate them for whatever
>>> reasons, but they would easily prevent such issues from happing.
>>
>> The problem with this system, which has been pointed out before, is that
>> upgrades using the Fedora N release DVD on an up-to-date Fedora N-1 system
>> will replace newer versions of packages with older ones -- this is bad.
>
> "Bad" .. a yum update after the upgrade will fix it.

What if the new version is incompatible? New versions are normally 
upwards compatible but not backware compatible.

Say you install a new mysql, then upgrade the tables, newer mysql will 
read those tables, but not older mysql.