在使用bundle管理依赖的时候遇到了这个问题：

Make sure that `gem install mysql2 -v '0.3.11'` succeeds before bundling.

在搜索后发现需要安装：libmysql-ruby libmysqlclient-dev

由于我机器上安装的是percona server，结果出现了如下冲突：

The following packages have unmet dependencies:
 libmysqlclient-dev : Depends: libmysqlclient18 (= 5.5.28-0ubuntu0.12.04.3) but 5.5.20-rel24.1-217.lenny is to be installed
E: Unable to correct problems, you have held broken packages.

不想卸载percona server，有比较熟悉的给看看如何解决.

系统环境：ubuntu12.04 ruby1.9.3 percona server 5.5.20