/usr/lib/GNUstep/Applications/gimp.app is in gworkspace-apps-wrappers 0.9.4-1build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/GNUstep/Applications/../../../share/GNUstep/gimp.app
/usr/lib/GNUstep/Applications/../../../share/GNUstep/gimp.app