Just attempted an install script on a clean Mac with El Capitan. After running the install script I was instructed to run it again, and got the following message:

Creating firedrake virtualenv.

ERROR: The executable firedrake/bin/python2.7 is not functioning

ERROR: It thinks sys.prefix is u'/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7' (should be u'/Users/colincotter/firedrake')

ERROR: virtualenv is not compatible with this system or executable

cheers

--cjc

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