Your bug report

#19778: file-system: (title 'uuid) is documented but not implemented

which was filed against the guix package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 19778@debbugs.gnu.org.

-- 
19778: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=19778
GNU Bug Tracking System
Contact help-debbugs@gnu.org with problems