This role installs chruby on the remove environment(s).
Tested on ansible 1.6, might work (or not) on earlier versions.
chruby_version: the version of chruby to install (defaults to 0.3.8)
Tested on ubuntu 12.04 and 14.04. No install dependencies but works nicely with ruby-install installed, see ruby-install.
All of this role is under MIT license.