Just a heads up that I've released environmentalist 0.2.3. You can update with:
<code> sudo gem install environmentalist </code>
The only substantial change in this release is that we moved the loading of postboot.rb to the bottom of the boot.rb file as opposed to the top of config/environment.rb. This was necessary because common db rake tasks like db:create and db:drop stopped loading the environment in 2.3.2.
As a recap, environmentalist provides an executable that converts a rails app's config structure. The basic idea is that environments themselves are now first-class citizens, allowing you to create several environments (e.g. staging, prodtest, demo, etc.) in a clean, organized fashion. Each environment is given its own folder where it can store its own set of configuration files (think mongrel configs, apache configs, etc.) without polluting the top-level config/ directory.