According to the documentation http://fedoraproject.org/wiki/Anaconda/Kickstart there is an option for repo : --priority= An integer value to assign a priority level to this repository. If multiple repositories provide the same packages, this number will be used to prioritize which repository will be used before another. anaconda 11.4.1.62 crashes with messages 'no such option: --priority'
The documentation is wrong here. It should be --cost=, not --priority=. Repos with a lower cost take precedence to those with a higher cost. We've updated the documentation appropriately.