Open Stack

Hello,
I got an error when try to ./stack.sh as:
/2015-03-02 05:58:20.692 | net.ipv4.ip_local_reserved_ports = 35357,35358
2015-03-02 05:58:20.959 | New python executable in tmp-venv-NoMO/bin/python
2015-03-02 05:58:22.056 | Installing setuptools, pip...done.
2015-03-02 05:58:22.581 | ERROR: 'pip wheel' requires the 'wheel' 
package. To fix this, run: pip install wheel/

After pip install wheel, got same error.
In [2]: wheel.__path__
Out[2]: ['/usr/local/lib/python2.7/dist-packages/wheel']
In [5]: pip.__path__
Out[5]: ['/usr/local/lib/python2.7/dist-packages/pip']

$ which python
/usr/bin/python

As above, the wheel can be imported successfully,
any hints ?

Thanks.

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