Thank God for yum-deprecated :-)

[Radek Holy]

----- Original Message -----
> From: "Bruno Wolff III" <bruno at wolff.to>
> To: "Jan Zelený" <jzeleny at redhat.com>
> Cc: users at lists.fedoraproject.org
> Sent: Monday, July 20, 2015 5:54:34 PM
> Subject: Re: Thank God for yum-deprecated :-)
> 
> On Mon, Jul 20, 2015 at 17:35:18 +0200,
>   Jan Zelený <jzeleny at redhat.com> wrote:
> >
> >That's basically what --allowerasing is about. The idea is that when you run
> >upgrade, you most likely don't want this upgrade to remove any of the
> >packages
> >that are currently installed on your system. As the name says, the --
> >allowerasing switch removes this assumption, allowing the dependency solver
> >to
> >have more available solutions to choose from.
> 
> But it doesn't always remove packages that would allow upgrading another
> package. The documentation doesn't appear to give precise information
> about when packages will be erased in order to allow upgrades. The case
> where I'd like to see it work is when there is a soname bump, but not all
> dependencies have been updated yet. In most cases I prefer to remove the
> unupdated packages temporary so that I can use the latest version of the
> library. It would also be useful for upograding between Fedora releases
> where retired packages can also block library updates.

Right, it still does not allow the depsolver to remove a capability at all. It allows it only to replace a package which provides a required capability with another package which provides it as well.

> >Back to your original question, I am not sure what the problem is. You seem
> >to
> >describe a situation where package has some broken deps and therefore can't
> >be
> >installed in which case it is not going to be installed, neither by yum nor
> >by
> >dnf and --skip-broken will have no effect on that. Or am I missing
> >something?
> 
> There are cases where yum gets to a point where it won't do any installs
> or updates, even though --skip-broken is turned on and some installs or
> updates are possible. You can work around this by trying to update or install
> a smaller set of packages. For updates dnf is better, but for installs it is
> currently worse.
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-- 
Radek Holý
Associate Software Engineer
Software Management Team
Red Hat Czech