Added a quick path to install quicklisp on any ECL system

contrib/quicklisp/ecl-quicklisp.lisp

@@ -0,0 +1,42 @@
+(defpackage :ecl-quicklisp
+  (:use :cl))
+
+(in-package :ecl-quicklisp)
+
+(require :ecl-curl)
+
+(defparameter *quicklisp-url* "http://beta.quicklisp.org/quicklisp.lisp")
+
+(defparameter *quicklisp-directory* (translate-logical-pathname "SYS:QUICKLISP;"))
+
+(defparameter *quicklisp-setup* "SYS:QUICKLISP;SETUP.LISP")
+
+(defun safe-download (url filename)
+  (ensure-directories-exist filename)
+  (handler-case
+      (ecl-curl:download-url-to-file url filename)
+    (ecl-curl:download-error (c)
+      (format t "~&;;;~%;;; Unable to download quicklisp. Aborting. ~%;;;")
+      (ext:quit 1)))
+  filename)
+
+(defun install-quicklisp (target-directory)
+  (let ((file (merge-pathnames "_installer.lisp" target-directory)))
+    (ensure-directories-exist file)
+    (ecl-curl:download-url-to-file *quicklisp-url* file)
+    (load file)
+    (eval (read-from-string
+	   (format nil "(quicklisp-quickstart:install :path ~S)"
+		   (namestring (truename target-directory))))
+	  )))
+
+(handler-case
+    (progn
+      (unless (probe-file *quicklisp-setup*)
+	(install-quicklisp *quicklisp-directory*))
+      (load *quicklisp-setup*))
+  (error (c)
+    (format t "~%;;; Unable to load / install quicklisp. Error message follows:~%~A"
+	    c)))
+
+