appraise 'rails2' do
  gem 'activerecord', '~> 2.3'
end

appraise 'rails30' do
  gem 'activerecord', '~> 3.0.0'
  gem 'railties',     '~> 3.0.0'
end

appraise 'rails31' do
  gem 'activerecord', '~> 3.1.0'
  gem 'railties',     '~> 3.1.0'
end

appraise 'rails32' do
  gem 'activerecord', '~> 3.2.0'
  gem 'railties',     '~> 3.2.0'
end