Hi, I don't see a way to install graph-tool using pip. Port on Mac OS X is not updated as frequently as pip. I'd recommend adding a way to install graph-tool using pip. Right now, I see the following error. /tmp$ pip install graph-tool Downloading/unpacking graph-tool Downloading graph-tool-2.2.15.tar.bz2 (520Kb): 520Kb downloaded Running setup.py egg_info for package graph-tool Traceback (most recent call last): File "<string>", line 14, in <module> IOError: [Errno 2] No such file or directory: '/private/tmp/build/graph-tool/setup.py' Complete output from command python setup.py egg_info: Traceback (most recent call last): File "<string>", line 14, in <module> IOError: [Errno 2] No such file or directory: '/private/tmp/build/graph-tool/setup.py' ---------------------------------------- Command python setup.py egg_info failed with error code 1 -- Regards, Peng