(sb-ext:disable-debugger)
(setf asdf:*central-registry* (list (car asdf:*central-registry*)))
(asdf:operate 'asdf:load-op :trivial-gray-streams)

(defmethod sb-heapdump:dump-system
    ((c (eql (asdf:find-system :trivial-gray-streams))))
  (sb-heapdump:dump-packages
   '(:trivial-gray-streams)
   "trivial-gray-streams.heap"
   :if-exists :rename-and-delete
   :systems '(:trivial-gray-streams)
   :system-packages '(:trivial-gray-streams-system)))

(let ((*default-pathname-defaults*
       (truename (sb-ext:posix-getenv "SBCL_HOME"))))
  (sb-heapdump:dump-system :trivial-gray-streams))
(sb-ext:quit)