Tommy has just released an new mysql-ruby package.

Actually 2 of them:

mysql-ruby-2.7.5 and mysql-ruby-2.8pre2

They are Ruby 1.9 compatible
Requirements

* MySQL 5.0.51a
* Ruby 1.8.6, 1.9.0

here is the link http://tmtm.org/en/mysql/ruby/

Great Job