# File lib/generators/cucumber/install/install_base.rb, line 189
      def detect_in_env(choices)
        return nil unless File.file?("features/support/env.rb")

        env = IO.read("features/support/env.rb")

        choices.each do |choice|
          detected = choice[1] if env =~ /#{choice[0]}/n
          return detected if detected
        end

        nil
      end