/usr/lib/python2.6/dist-packages/Pyste-0.9.10.egg-info is in libboost-python1.49-dev 1.49.0-3.2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.6/dist-packages/../../../share/pyshared/Pyste-0.9.10.egg-info