anchor.diff:  
   (in-package :ros.install)
  -(ql:quickload '(:plump :simple-date-time :split-sequence) :silent t)
  +(ql:quickload '(:plump :simple-date-time :split-sequence :cl-ppcre) :silent t)
   
   (defun abcl-bin-get-version ()
     (let ((file (merge-pathnames "tmp/abcl-bin.html" (homedir))))
  
positive.code: 
  ;;"https://common-lisp.net/project/armedbear/releases/1.3.3/abcl-bin-1.3.3.tar.gz"
  
  (defun abcl-bin-argv-parse (argv)
    (set-opt "as" (getf argv :version))
    (when (position "--without-install" (getf argv :argv) :test 'equal)
  
negative.code:   (set-opt "download.archive" (let ((pos (position #\/ (get-opt "download.uri") :from-end t)))
                                  (when pos 
                                    (merge-pathnames (format nil "archives/~A" (subseq (get-opt "download.uri") (1+ pos))) (homedir)))))
    (set-opt "prefix" (abcl-bin-impl))
    (set-opt "src" (merge-pathnames (format nil "src/~A-~A/" (getf argv :target) (getf argv :version)) (homedir)))
    (cons t argv))
  
  