错误安装Python包装的openkinect

Question

我试图在Ubuntu 12.04的OpenKinect安装Python包装，但我不能因为这个错误：

$ sudo apt-get install python2.7-dev 
python2.7-dev : Depends: libexpat1-dev but it is not going to be installed 
       Depends: libssl-dev but it is not going to be installed 
E: Unable to correct problems, you have held broken packages. 

Python包装需要这些依赖关系：

1. 用Cython
2. 蟒-dev的（上述错误）
3. 蟒-numpy的

我已阅读该post，但它不适用于我

我该如何安装python-dev？

Answer 1

标记更新部分的所有复选框并重新载入源代码。