[Spacewalk-list] yum-priorities feature in Spacewalk repository management?

[Contant, Olivier]

Hi,

I'm working for a company doing R&D in software development.  They have
about 30 internally developed application. 
Some of those applications must run a specific version of a package
dependency, let say MySQL 5.5 instead of the MySQL 5.0 available in the
base repository for the operating system.

I created a new repository including the RPM of the internally develop
application and added the specific version of dependency package.
Application repository would have:
- Application.rpm
- MySQL 5.5-server.rpm
- other dependency.rpm ...

Since I need this system to be registered to its base repository for
operating system maintenance and update as well as other useful package
that I might need to install on those system for administration,  I get
into issue where I have package conflicting in both repository as
package exist in both.  

Is there a way to tell my client to priories one repository over the
other for some packages?   
What would be the best practice in this scenario?


Thank you,

Olivier