~/Source/Lisp/xyz/bin $ ./xyz.app/Contents/MacOS/xyz

debugger invoked on a SIMPLE-ERROR in thread
#<THREAD "main thread" RUNNING {10005D8083}>:
  Problem running initialization hook GLIB::RUN-INITIALIZERS:
  Unable to load any of the alternatives:
   ("libglib-2.0.0.dylib" "libglib-2.0.dylib")

Type HELP for debugger help, or (SB-EXT:EXIT) to exit from SBCL.

restarts (invokable by number or by possibly-abbreviated name):
  0: [CONTINUE] Skip this initialization hook.
  1: [ABORT   ] Exit from the current thread.

(SB-INT:CALL-HOOKS "initialization" (GLIB::RUN-INITIALIZERS LOG4CL-IMPL::INIT-HOOK) :ON-ERROR :ERROR)
0] 1