Easy to install Ruby on Rails on Mac — ONE CLICK Installer

Very cool.. I wonder if this will be compatible with everythin?
mysql database etc.

clipped from locomotive.raaum.org Locomotive Ruby on Rails development done the Mac way Hello and welcome to Locomotive. This is a simple tool to help you develop Ruby on Rails applications on Mac OS X. While those not choosing to set up their Rails development environment using Locomotive may spend hours frustrated by broken libraries, compilation errors, and incomprehensible incompatibilities, you will be able to jump right into Rails development the minute you finish downloading. Regardless of whether you are a beginner or an expert, Locomotive will save you time, reduce your stress, and eliminate (your rails installation related) exasperation. Try it now! Simultaneously run multiple versions of Rails, each of which may be configured with different libraries, gems, or web servers. Locomotive uses “Bundles”, each of which is a self-contained installation of Ruby, Rails, and all the necessary support software and libraries (as well as many useful optional tools!). Choose Your Version