Today while looking into the status of a Fedora / EPEL related issue, I
made good use of the isitfedoraruby website lookup the package
dependency tree [1]. From what I know this visualization / data
aggregation is not available anywhere else and it still looks and works
great.
Again kudos goes to all the students involved with the project over the
years for building a solid app!
-Mo
[1]
http://www.isitfedoraruby.com/fedorarpms/rubygem-crack/full_deps