/usr/lib/python2.7/dist-packages/calypso-1.3.egg-info/SOURCES.txt is in calypso 1.4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/calypso-1.3.egg-info/../../../../share/pyshared/calypso-1.3.egg-info/SOURCES.txt