使用pypy2.2时导入Numpypy

我曾经有过pypy verion 1.9.我可以执行以下操作来导入numpypy:

>pypy
Python 2.7.2 (341e1e3821ff, Jun 07 2012, 15:42:54)
[PyPy 1.9.0 with GCC 4.2.1] on darwin
Type "help", "copyright", "credits" or "license" for more information.
And now for something completely different: ``translating pypy with cpython is
soooooo slow''
>>>> import numpypy

最近我更新了我的操作系统并安装了pypy版本2.2,现在我无法导入numpypy

>>>> import numpypy
Traceback (most recent call last):
  File "", line 1, in 
ImportError: No module named numpypy

可能是什么问题？我知道numpy并不完全支持,但我有许多脚本在pypy中使用numpypy的有限功能.