# File lib/compass/compiler.rb, line 67
    def new_config?
      config_file = Compass.detect_configuration_file
      return false unless config_file
      config_mtime = File.mtime(config_file)
      css_files.each do |css_filename|
        return config_file if File.exists?(css_filename) && config_mtime > File.mtime(css_filename)
      end
      nil
    end