+;; Tell SBCL where to find its source source.
+#+sbcl
+(sb-ext:set-sbcl-source-location #p"/usr/share/sbcl-source/")
+
+;; Tell some Lisps about my home directory.
+#+(and unix (or sbcl clisp))
+(let* ((homestring (or #+sbcl (sb-ext:posix-getenv "HOME")
+ #+clisp (ext:getenv "HOME")
+ #+cmu (unix:unix-getenv "HOME")
+ "/home/mdw"))
+ (home (pathname (concatenate 'string homestring "/"))))
+ (setf (logical-pathname-translations "HOME")
+ `(("HOME:**;*.*.*" ,(merge-pathnames "**/*.*" home nil)))
+ (logical-pathname-translations "CL")
+ '(("CL:SOURCE;**;*.*.*" #p"/usr/share/common-lisp/source/**/*.*")
+ ("CL:SYSTEMS;**;*.*.*" #p"/usr/share/common-lisp/systems/**/*.*"))))
+