Rake::TaskManager.class_eval do
    def alias_task(fq_name)
      new_name = "#{fq_name}:original"
      @tasks[new_name] = @tasks.delete(fq_name)
    end
  end

  def alias_task(fq_name)
    Rake.application.alias_task(fq_name)
  end

  def alias_task_chain(*args, &block)
    name, params, deps = Rake.application.resolve_args(args.dup)
    fq_name = Rake.application.instance_variable_get(:@scope).dup.push(name).join(':')
    alias_task(fq_name)
    Rake::Task.define_task(*args, &block)
  end