Rails 3.1 Gemfile with DataMapper, RSpec, Haml, Sass, CoffeeScript and Thin (in dev)

application.rb

# overwrite the existing requires at the top with these

require "action_controller/railtie"
require 'dm-rails/railtie'
require "action_mailer/railtie"
# require "active_resource/railtie"
require "sprockets/railtie"

Gemfile

source 'http://rubygems.org'

gem 'activesupport',       :require => 'active_support'
gem 'actionpack',          :require => 'action_pack'
gem 'actionmailer',        :require => 'action_mailer'
gem 'railties',            :require => 'rails'

gem 'mysql2'

DM_VERSION    = '~> 1.2.0.rc1'

#gem 'dm-rails', "1.1.0" # git: "https://github.com/datamapper/dm-rails.git"

gem 'dm-active_model', DM_VERSION, git: "git://github.com/datamapper/dm-active_model.git"
gem 'dm-rails', DM_VERSION, git: "git://github.com/datamapper/dm-rails.git"
gem 'dm-mysql-adapter'     , DM_VERSION
gem 'dm-migrations'        , DM_VERSION
gem 'dm-types'            , DM_VERSION, git: "git://github.com/datamapper/dm-types.git"
gem 'dm-validations'       , DM_VERSION
#gem 'dm-constraints'      , DM_VERSION
# gem 'dm-transactions'    , DM_VERSION
gem 'dm-aggregates'        , DM_VERSION
gem 'dm-timestamps'        , DM_VERSION
gem 'dm-observer'          , DM_VERSION

# gem 'dm-core'       

gem 'tzinfo'

gem "haml"
gem "sass"

gem 'newrelic_rpm'
gem "voidtools", git: "git://github.com/makevoid/voidtools"
gem "exception_notification", :git => "git://github.com/rails/exception_notification"

gem 'jquery-rails'
gem 'capistrano'

group :development, :test do
  gem "rspec-rails", "~> 2.6"
  gem "jasmine", group: [:development, :test]
  gem "spork"
end

group :test do
  gem "factory_girl_rails"
  gem "capybara"
end

# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails', "  ~> 3.1.0"
  gem 'coffee-rails', "~> 3.1.0"#, git: "git://github.com/rails/coffee-rails.git"
  gem 'uglifier'
end


# web servers
# gem 'unicorn'
gem 'thin'

# To use debugger
# gem 'ruby-debug19', :require => 'ruby-debug'

script_rails

#!/usr/bin/env ruby
# This command will automatically be run when you run "rails" with Rails 3 gems installed from the root of your application.

APP_PATH = File.expand_path('../../config/application',  __FILE__)
require File.expand_path('../../config/boot',  __FILE__)

# override Rack::Handler#default to load thin:
# http://www.skorks.com/2011/08/when-developers-go-to-great-length-to-save-typing-4-letters/
require 'rack/handler'
Rack::Handler.class_eval do
  def self.default(options = {})
    # Guess.
    if ENV.include?("PHP_FCGI_CHILDREN")
      # We already speak FastCGI
      options.delete :File
      options.delete :Port
 
      Rack::Handler::FastCGI
    elsif ENV.include?("REQUEST_METHOD")
      Rack::Handler::CGI
    else
      begin
        Rack::Handler::Mongrel
      rescue LoadError
        begin
          Rack::Handler::Thin
        rescue LoadError
          Rack::Handler::WEBrick
        end
      end
    end
  end
end
require 'rails/commands'