/usr/share/rep/0.90.2/lisp/compiler.jlc is in librep9 0.90.2-1.4ubuntu3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/rep/0.90.2/lisp/rep/vm/compiler.jlc
/usr/share/rep/0.90.2/lisp/rep/vm/compiler.jlc