So far today, Gem dependencies might be written with Capistrano, but we can write Gem dependencies in config/environemt.rb with Edge Rails, and it will be installed with Rake task.
# in config/enviroment.rb
config.gem 'hpricot'
config.gem 'aws/s3', '>= 0.4.0'
config.gem 'aws-s3', :lib => 'aws/s3', :version => '>= 0.4.0', :source => "http://code.whytheluckystiff.net"
Install all required Gems.
rake gems:install
Cool
