/usr/lib/python2.7/dist-packages/mayavi-4.3.1.egg-info/requires.txt is in mayavi2 4.3.1-3.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6
apptools traits traitsui [app] envisage