This manual describes a complete procedure how to install and run Cabot on OS X for development. It was tested on OS X 10.9.1 and Cabot version 2014-01-23.
We’re using Homebrew to install the required dependencies on OS X. If you don’t have Homebrew yet (how is that possible? ;), see http://brew.sh/ for an installation script. Note: MacPorts can be probably used too, but we didn’t test it.
Although you can use Python and Ruby that comes with OS X, it’s better to use Python installed via Homebrew and use rbenv to manage Rubies. Then you don’t need to use sudo and mess up your system. If you’re already using rvm instead of rbenv, then stay with it and skip the rbenv installation steps.