[Soliah]

I've had great success using Brightbox's Ruby PPAs https://launchpad.net/~brightbox/+archive/ubuntu/ruby-ng. Might want to give them a try first.

[michaelwww]

This worked! Just a couple of problems. Hashrocket needs dev version of Ruby and pg wouldn't build, but StackOverflow told me I needed to install libpq-dev. Then I had to install postgres, but wasn't hard.