Updates-testing (was: Re: thunderbird upgrade - wtf?)

[Seth Vidal]

On Wed, 14 Oct 2009, chasd wrote:

>
> Seth Vidal wrote:
>
>> Seriously:
>> 
>> yum downgrade
>> 
>> and in F12 - try out things like the history undo options.
>> 
>> there are lots of potential nasty situations that can happen but I think 
>> the general consensus was 'screw it, let the user sort it out if it breaks, 
>> which it often does not'
>> 
>> generally, if the app you updated modifies its data format and cannot 
>> revert it then the user is SOL - but that's not _THAT_ common and when it 
>> does happen it's certainly not yum's fault.
>
> If it isn't that common, could yum have added directives to its configuration 
> ( similar to " exclude= " ) ?
> This could increase the reliability of " yum downgrade " in the eyes of those 
> that use it.
>
> MySQL and PostgreSQL come to mind.
> /etc/yum.conf might have " nodowngrade=mysql-server postgresql-server " in 
> the default file.
> That's easier than carrying that info in the package or repo files.
> When additional packages are found to be not downgradable, they can be added 
> to the list.
> Granted, if there are a lot of packages, that gets unwieldy.
> Also, it could break a downgrade transaction.
>

I have no idea what that would do? just tell the user "tough noogies"?

-sv