/usr/lib/yorick/Makempy.mpich2 is in yorick-mpy-mpich2 2.2.03+dfsg-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/yorick/../../share/yorick/Makempy.mpich2
/usr/lib/yorick/../../share/yorick/Makempy.mpich2