Hi there, I just got a truly strange report from a user who sent me the following install log: --------------------------------------------------------------------- (pythonenv)knepley:/PETSc3/multicore/pyopencl$ python setup.py install running install install_dir /PETSc3/multicore/pythonenv/lib/python2.6/site-packages/ running bdist_egg running egg_info creating pyopencl.egg-info writing requirements to pyopencl.egg-info/requires.txt (snip... builds as normal) writing build/bdist.macosx-10.6-i386/egg/EGG-INFO/native_libs.txt zip_safe flag not set; analyzing archive contents... creating dist creating 'dist/pyopencl-2011.1beta3-py2.6-macosx-10.6-i386.egg' and adding 'build/bdist.macosx-10.6-i386/egg' to it removing 'build/bdist.macosx-10.6-i386/egg' (and everything under it) Processing pyopencl-2011.1beta3-py2.6-macosx-10.6-i386.egg creating /PETSc3/multicore/pythonenv/lib/python2.6/site-packages/pyopencl-2011.1beta3-py2.6-macosx-10.6-i386.egg Extracting pyopencl-2011.1beta3-py2.6-macosx-10.6-i386.egg to /PETSc3/multicore/pythonenv/lib/python2.6/site-packages Adding pyopencl 2011.1beta3 to easy-install.pth file Installed /PETSc3/multicore/pythonenv/lib/python2.6/site-packages/pyopencl-2011.1beta3-py2.6-macosx-10.6-i386.egg Processing dependencies for pyopencl==2011.1beta3 Searching for pyopencl==2011.1beta3 Reading http://pypi.python.org/simple/pyopencl/ Reading http://mathema.tician.de/software/pyopencl Best match: pyopencl 2011.1beta3 Downloading http://pypi.python.org/packages/source/p/pyopencl/pyopencl-2011.1beta3.tar.g... Processing pyopencl-2011.1beta3.tar.gz --------------------------------------------------------------------- It appears that the package (PyOpenCL) finds itself as its own dependency, proceeds to re-download itself (and then fails to build itself the second time around, but I think that's irrelevant for us here). PyOpenCL uses distribute, is installed to the user's empty distribute-based virtualenv sitting on top of a Mac system Python. I'd much appreciate any hints on what might be wrong. Thanks, Andreas PS: Versions: virtualenv-1.5.1, distribute-0.6.14