José Matos wrote:
On Monday 09 February 2009 22:12:24 Adam Williamson wrote:
Dumb question alert, but - wouldn't the correct way to test be simply to
run 'yum update --enablerepo=updates-testing' ? That should attempt to
update all installed packages from the updates-testing repo, which is
roughly what the 'official update' process will do once all these
packages are in the official update repo, yes? That seems to be the most
important thing to test.
Sometimes users want to test just a small set of packages. We have seen lots
of examples like this with the recent kde-4.2 update not only on the lists but
also on real life (I was asked this same question several times).
In most cases if what you want to test is just a given component this should
not matter. I know that there are exceptions FWIW.
--
adamw
Adam is right. If you just do the full update no dependency issues will occur because they will be masked. That
doesn't mean they aren't there. Testing means *looking* for errors, not finding a way to make things work. If we
require group updates to take care of dependencies, the individual package dependency system is broken. Maybe there
should be whole subsystems that are only group installed with no individual package dependencies because they behave as
units. KDE, Gnome, X, etc.
Jose is also right that people *do* want to work with individual packages sometimes. Maybe that has to be disallowed in
order to simplify the system.
Finally, this is a very hard problem, the problem of dependencies. It is comparable to looking for Hamiltonian
subcycles in a graph with bidirectional edges. As near as I can guess from watching the output, yum does an exhaustive
search, paring branches that get to the leaf nodes and cutting cycles as they occur. But it depends on all the edges
being in place so the search can find all the nodes.
I suppose my complaining is becoming tiresome because there *does* exist a workaround, so I'll stop now. :-)
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