Gemfile for Rails 3.x Greenfield

I just started building a new product, and wanted to document my tools of choice in the Gemfile below. I also like to use use Rails Wizard to generate some of the configuration stuff (like making sure generators use Rspec instead of Test::Unit). Normally I would also lock the Rails gems to specific versions but I've been trying this app out with Rails 3.1rc1 so it's easier to let those dependencies float for now.

I'm using 'thin' here because I'm running this on Heroku's new Celadon Cedar stack where you need to bring your own app container (unless you want to use WEBrick).

# gems needed by Rails
gem 'rails', '3.0.8'
gem 'pg'
gem 'sass'
gem 'coffee-script'
gem 'uglifier'
gem 'jquery-rails'

# application gems
gem 'thin', '1.2.11'
gem "haml", "3.1.1"
gem "haml-rails", "0.3.4"
gem 'formtastic', "1.2.4"
gem "foreigner", "1.0.3"
gem "dim", "1.0.0"
gem "authlogic", "3.0.3"

group :development do
  gem "annotate"
end

group :test do
  gem "rb-fsevent", "0.4.0"
  gem "growl", "1.0.3"
  gem "guard-spork", "0.2.0"
  gem "guard-rspec", "0.4.0"
  gem "shoulda-matchers", "1.0.0.beta2"
  gem "capybara", "1.0.0.rc1"
  gem "launchy", "0.4.0"
  gem "timecop", "0.3.5"
end

group :development, :test do
  gem "rspec-rails", "2.6.1"
  gem "silent-postgres", "0.0.8"
  gem "factory_girl_rails", "1.0.1"
end