Re: yum-pluginize our upgrade magic

[seth vidal <skvidal fedoraproject org>]

On Mon, 2008-07-14 at 13:57 -0400, Chris Lumens wrote:
> As you may be aware, anaconda has some special upgrade magic in the form
> of the whiteout list and the upgrade blacklist.  The whiteout list helps
> us to know where to split dependency loops, and the blacklist helps us
> to know which packages should be removed on upgrade.  This is mostly due
> to packages changing from multilib to not.
> 
> Attached is my two yum plugins (the first two I've ever actually
> written, so there's bound to be something I missed) and examples of the
> two metadata files.  Of course we may want to alter the format of the
> metadata.  These files will need to be maintained by hand in some
> version control, similar to comps.  We'll also need to make sure they
> get written out to repomd.xml.
> 
> I have performed minimal testing.  I'd like to try them out with
> preupgrade, but haven't been able to get to that yet.  Anyway, comments?


Will the blacklist ever need to take evr's as well as name-archs? If
not, then jeremy's suggestion of preresolve is probably not
unreasonable. However, if it will need to take evr's then putting them
in the exclude_hook makes more sense.

thanks,
-sv