edx/configuration — pull request #237 by jbau (2013-09-05 06:01:45+00:00)
Title: Handle cases where we need to refresh ruby-build due to new ruby version

@feanil
Ran into a case where the ruby version requested was not in the already installed ruby-build. The solution here is to detect and reinstall when appropriate.

reference: https://github.com/sstephenson/ruby-build