Python configured using

configure --prefix=/xnat/python/2.7.2

In birn-gridftp, there is a separate virtualenv for Python 2.7.2

cd /xnat/python/2.7.2
wget https://raw.github.com/pypa/virtualenv/master/virtualenv.py
bin/python virtualenv.py xnatenv

activate xnatenv
source /xnat/python/2.7.2/xnatenv/bin/activate

easy_install

easy_install ipython
easy_install nose

pip install httplib2
pip install lxml
easy_install pyxnat

downloaded numpy 1.6.1 and scipy 0.10

cd numpy-1.6.1/
python setup.py build --fcompiler=gnu95
python setup.py install

cd scipy-0.10.0/
python setup.py build --fcompiler=gnu95
python setup.py install