Hi! Thanks for graph-tool, really a great piece of software! I've been experimenting with graph-tool and pypy3 (by making $PYTHON point to the pypy interpreter), and I couldn't manage to successfully run configure, even while setting --with-python-module-path. I don't know if there's a correct value to put for LIBS here--maybe the directory structures for lib directories of cpython and pypy are different? Do you think there's a way to make these two pieces of software cooperate? thanks a lot! Here, the error that I get: configure: error: Could not link test program to Python. Maybe the main Python library has been installed in some non-standard library path. If so, pass it to configure, via the LIBS environment variable. Example: ./configure LIBS="-L/usr/non-standard-path/python/lib" ============================================================================ ERROR! You probably have to install the development version of the Python package for your distribution. The exact name of this package varies among them. ============================================================================ -- matteo