/etc/revisor/conf.d/ are YUM configuration files. Revisor directs YUM through its API to use these files during the compose process, and does not handle these files itself. This chapter explains how these files are used, how you can change them and lists a few tips and tricks.
$releasever or $basearch variables. Since Revisor allows cross-composing distributions between different versions of the operating system, as well as different architectures, these variables need to be expanded to the value intended. Ergo, if a repository configuration has http://server/repo/$releasever/$basearch/, for a Fedora 12 i386 YUM configuration file you would need to change such in http://server/repo/12/i386/.