What are the rules for which package we build against in F-13?

[Richard W.M. Jones]

So I submitted a rebuild for libguestfs in F-13 (just now).  This
was built against:

plymouth-core-libs 0.8.0-0.20100114.2.fc13

But the version of plymouth that I get when I install plymouth from
F-13 updates-testing on a local machine (after
'yum --enablerepo=\* clean all') is:

plymouth-core-libs 0.8.0-0.20100225.1.fc13

and neither of those versions is mentioned by Bodhi.  Bodhi seems to
suggest that it should be building against and using another version
entirely:

https://admin.fedoraproject.org/updates/search/plymouth
plymouth-0.8.0-0.20100305.1.fc13

I'm confused by this situation ...

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
libguestfs lets you edit virtual machines.  Supports shell scripting,
bindings from many languages.  http://et.redhat.com/~rjones/libguestfs/
See what it can do: http://et.redhat.com/~rjones/libguestfs/recipes.html