[Yum] how can I check hdr file dependencies?

[Scott Lawrence]

I'm getting a new yum repository set up and it's mostly gone quite
smoothly, but I built a brand new system from it and got an odd result.

The system is Fedora Core 2 - I built it from fairly recent CDs, and
installed the Minimal System.  Then I edited the yum.conf to include my
own repositories, which provide components of the open source sipXpbx
SIP proxy (http://www.sipfoundry.org/pub/sipX/).

Then I ran 'yum update sipxpbx'.  It loaded all the headers from my
repositories, thought for quite a while about dependencies, and then
downloaded and installed almost all the RPMs I thought it should (the
'almost' is of course the key word).

The sipxpbx rpm requires a number of components, which in turn require
some common libraries - I think that thought that this was all correctly
expressed in the rpm files, but if so I can't explain the result.

One of the common libraries (sipxcommserverlib) did not get installed,
but packages that supposedly require it did:

> rpm -q -R sipxregistry | grep sipxcommserverlib
sipxcommserverlib >= 2.6.1

... but sipxcommserverlib is not installed.

I didn't think this should have been possible, but...

How can I check whether the yum .hdr files correctly express the
dependencies?

RPM version 4.3.1
yum version 2.0.7

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