/usr/share/racket/pkgs/schemeunit/gui.rkt is in racket-common 6.1-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | #lang racket/base
(require rackunit/gui)
(provide (all-from-out rackunit/gui))
|