RVM Application Specific Gemset

Step 1: Setup your Ruby 1.9.2-head

$ rvm 1.9.2-head
WARN: ruby ruby-1.9.2-head is not installed.To install do: ‘rvm install ruby-1.9.2-head’

Step 2: Install the utilities need to build the head

$ sudo apt-get install bison
$ sudo apt-get install autoconf

Step 3: Install your Ruby 1.9.2-head

$ rvm install ruby-1.9.2-head

Step 4: Create your new GemSet

$ rvm gemset create corerivalry