/usr/lib/python2.7/dist-packages/Nevow-0.10.0.egg-info/SOURCES.txt is in python-nevow 0.10.0-5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/Nevow-0.10.0.egg-info/../../../../share/pyshared/Nevow-0.10.0.egg-info/SOURCES.txt