Hi all, I have troube installing numpy in a virtual environment on a SuSE Enterprise 11 server (ppc64). Here is what I did: curl -O https://raw.github.com/pypa/virtualenv/master/virtualenv.py python virtualenv.py --distribute --no-site-packages .virtualenvs/pydoas source .virtualenvs/pydoas/bin/activate pip install numpy And here is the outcome: SystemError: Cannot compile 'Python.h'. Perhaps you need to install python-dev|python-devel. However, Python.h exists, because I did install the python-devel package: (pydoas)hilboll@odin:~/.virtualenvs/pydoas/build/numpy> find /usr/include/ | grep Python.h /usr/include/python2.6/Python.h I also tried without the --distribute --no-site-packages flags, with the same result. Any hints are very welcome :) Cheers, Andreas.