appraise "rails23" do gem "rails", "~> 2.3.18" end appraise "rails30" do gem "rails", "~> 3.0.20" end appraise "rails31" do gem "rails", "~> 3.1.12" end appraise "rails32" do gem "rails", "~> 3.2.21" end appraise "rails40" do gem "rails", "~> 4.0.13" end appraise "rails41" do gem "rails", "~> 4.1.10" end appraise "rails42" do gem "rails", "~> 4.2.1" end appraise "railsNG" do gem 'rails', :github => 'rails/rails', :branch => 'master' gem 'arel', :github => 'rails/arel', :branch => 'master' end