# File lib/bundler/dsl.rb, line 32
    def eval_gemfile(gemfile, contents = nil)
      contents ||= Bundler.read_file(gemfile.to_s)
      instance_eval(contents, gemfile.to_s, 1)
    rescue Exception => e
      message = "There was an error parsing `#{File.basename gemfile.to_s}`: #{e.message}"
      raise DSLError.new(message, gemfile, e.backtrace, contents)
    end