Your bug report

#39008: guile-sdl build fails: ld: cannot find -lfluidsynth

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 39008@debbugs.gnu.org.

-- 
39008: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=39008
GNU Bug Tracking System
Contact help-debbugs@gnu.org with problems