/usr/lib/GNUstep/ is in gworkspace-apps-wrappers 0.9.3-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/GNUstep/Applications/
/usr/lib/GNUstep/Applications/abiword.app
/usr/lib/GNUstep/Applications/aplay.app
/usr/lib/GNUstep/Applications/bluefish.app
/usr/lib/GNUstep/Applications/emacs.app
/usr/lib/GNUstep/Applications/gedit.app
/usr/lib/GNUstep/Applications/gimp.app
/usr/lib/GNUstep/Applications/gnumeric.app
/usr/lib/GNUstep/Applications/iceweasel.app
/usr/lib/GNUstep/Applications/ImageMagick.app
/usr/lib/GNUstep/Applications/konqueror.app
/usr/lib/GNUstep/Applications/LyX.app
/usr/lib/GNUstep/Applications/nedit.app
/usr/lib/GNUstep/Applications/sox.app
/usr/lib/GNUstep/Applications/vi.app
/usr/lib/GNUstep/Applications/xchat.app
/usr/lib/GNUstep/Applications/xfig.app
/usr/lib/GNUstep/Applications/xine.app
/usr/lib/GNUstep/Applications/xpdf.app