source "http://rubygems.org" case ENV["MODEL_ADAPTER"] when nil, "active_record" gem "sqlite3-ruby", :require => "sqlite3" gem "activerecord", :require => "active_record" gem "with_model" when "data_mapper" gem "dm-core", "~> 1.0.2" when "mongoid" gem "bson_ext", "~> 1.1" gem "mongoid", "~> 2.0.0.beta.19" else raise "Unknown model adapter: #{ENV["MODEL_ADAPTER"]}" end gemspec