/usr/lib/python2.7/dist-packages/social_auth/migrations/0002_auto__add_unique_nonce_timestamp_salt_server_url__add_unique_associati.py is in python-django-social-auth 0.7.23-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/social_auth/migrations/../../../../../share/pyshared/social_auth/migrations/0002_auto__add_unique_nonce_timestamp_salt_server_url__add_unique_associati.py