Homebrew doesn’t install gems and that, if you want them you should read this: Gems, Eggs and Perl Modules
More questions? Maybe the FAQ can help.
Something just blow up? A formula not working correctly? We have a checklist that can help resolve most problems.
Find a nice blog entry on using Homebrew and link it here.
To contribute a formula:
push and then create a pull request (from a new branch, not master). Please read the Formula Cookbook before your first contribution or you’ll make us cry.
Remember! We don’t accept formulae into mxcl/master that dupes stuff already included with OS X. More details on that in the Formula Cookbook.
Either fork, add features, commit, push and open a ticket or create a new external command.