Method: (RUCKSACK-ROLLBACK STANDARD-RUCKSACK)

Source

(defmethod rucksack-rollback ((rucksack standard-rucksack))
  ;; Rollback the cache.
  (cache-rollback (rucksack-cache rucksack))
  ;; Rollback the roots by loading them back from file.
  (load-roots rucksack)
  (setf (roots-changed-p rucksack) nil))