```common lisp
;;;; packagedef.lisp
;;;; Author: Elliot Penson

(defpackage :knight-owl
  (:use :common-lisp))
```

Use cl-ppcre in the knight-owl package
user
```common lisp
;;;; packagedef.lisp
;;;; Author: Elliot Penson

(ql:quickload "cl-ppcre")

(defpackage :knight-owl
  (:use :common-lisp :cl-ppcre))
```
assistant