# File lib/sass/plugin/staleness_checker.rb, line 62
      def stylesheet_needs_update?(css_file, template_file, importer = nil)
        template_file = File.expand_path(template_file)
        begin
          css_mtime = File.mtime(css_file)
        rescue Errno::ENOENT
          return true
        end
        stylesheet_modified_since?(template_file, css_mtime, importer)
      end