anchor.diff:  
   
   ;;;; Cleanup Operations ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  -
   ;; delete tmp dir to force recompilation
   (uiop:delete-directory-tree
    (merge-pathnames (make-pathname
  
positive.code: (uiop:delete-file-if-exists
   (format nil "~AMakefile" (asdf:system-source-directory :next)))
  
  (qquit)
  
negative.code: ;;;; make.lisp --- create binary files for nEXT
  
  ;;;; Pre-requisties:
  ;;;; - dylibbundler (available via ports)
  ;;;; - ecl (available at the official website)
  ;;;; - eql (available at the official repository)
  ;;;;
  ;;;; See Next/next/README.org for more information on installing the
  ;;;; dependencies necessary to build nEXT from source
  ;;;;
  ;;;; Please note that this script must be run from the directory
  ;;;; Next/next. It may be necessary to modify the paths or commands in
  ;;;; the "Bundle OSX Dependencies" List.
  
  #-eql5
  (error "Please use the EQL5 executable (see README)")
  (require :cmp)
  