PHP Dependencies

Hey guys, Forgive me if this has been addressed before, but I was wondering: Have we ever considered maintaining an RPM for PHP dependencies for each version branch? The are legitimate reasons why people prefer to build PHP manually instead of building from a repo, but those reasons often don't extend to the various extensions. So ideally, it would be awesome to be able to build those from a repo and have them match the builds used by that particular PHP version. For example, on CentOS I might do something like, "sudo yum install php-common --enablerepo=PHP5_3". I was actually thinking of creating and maintaining some RPM packages for that purpose, but I figured it might be good to find out if there's already a better method first. Thanks! --Kris