Description of problem:
I was trying to use yum update on an x86_64 Fedora 14 machine to update gsoap to the Fedora 15 version, but I forgot that I also needed to update gsoap-devel.  Yum confusingly tried to install the i686 version of gsoap from Fedora 14 instead of complaining that the dependencies of gsoap-devel would be broken.

I'm not sure if this is a bug in yum or in the dependencies between gsoap-devel and gsoap.

Version-Release number of selected component (if applicable):
yum-3.2.28-7.fc14.noarch
gsoap-2.7.16-1.fc14.x86_64
gsoap-devel-2.7.16-1.fc14.x86_64

How reproducible:
Always

Steps to Reproduce:
1. yum install gsoap gsoap-devel
2. yum update http://mirror.netrino.co.uk/mirror.fedora.com/releases/15/Everything/x86_64/os/Packages/gsoap-2.7.17-3.fc15.x86_64.rpm
  
Actual results:
================================================================================
 Package   Arch       Version             Repository                       Size
================================================================================
Updating:
 gsoap     x86_64     2.7.17-3.fc15       /gsoap-2.7.17-3.fc15.x86_64     1.0 M
Installing for dependencies:
 gsoap     i686       2.7.16-1.fc14       fedora                          205 k

Expected results:
Since the installed gsoap-devel is an x86_64 package, I would expect an error about its dependencies not being resolved by the update.

Additional info:
It works if I update gsoap-devel from the Fedora 15 repo at the same time.