dnf replacing yum and dnf-yum

[Adam Williamson]

On Wed, 2015-04-08 at 14:56 +0200, drago01 wrote:
> 
> > It is not so simple, you have to test all combinations for packages
> > requiring an updated package and all the packages there requires 
> > someting
> > provided by previous version of the package, with thousend of 
> > packages and
> > multiple packages providing the same stuff, it is an almost 
> > impossible task.
> 
> Did you even read what I wrote?

Did you read what Tim wrote? He pointed out that you are only 
answering one half of the question that needs answering, and it's by 
far the easier half. Yes, it's relatively easy to check if each 
package in a proposed update push is installable. What's much harder 
is to check whether pushing that packages makes *any other package in 
the distribution* non-installable.

If you send an update that bumps the soname of a library, for 
instance, *that update itself* won't fail a depcheck which just checks 
if that package can be installed. You somehow need your depcheck to 
know to try and install various packages that depend on your update 
and see if *they* work OK.

(The question of what package is 'to blame' for a dependency issue is 
not always entirely straightforward, either; it's not always quite as 
simple as 'take the apparently-offending update out').

It's hard to see how you build a perfect dep check other than trying 
to solve the deps of *every single package in the distro* against 
every proposed update.
-- 
Adam Williamson
Fedora QA Community Monkey
IRC: adamw | Twitter: AdamW_Fedora | XMPP: adamw AT happyassassin . net
http://www.happyassassin.net