X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/profile/blobdiff_plain/967daef9fd4f6db2f4c0ebf862c1f53c974a633d..77a15cda3eb6846cbcc535f60f19f5e0a0051508:/dot/lisp-init.lisp

diff --git a/dot/lisp-init.lisp b/dot/lisp-init.lisp
index 845aa5e..91971ca 100644
--- a/dot/lisp-init.lisp
+++ b/dot/lisp-init.lisp
@@ -48,7 +48,9 @@ (setf ccl:*quit-on-eof* t)
 
 ;; Tell SBCL where to find its source source.
 #+sbcl
-(sb-ext:set-sbcl-source-location #p"/usr/share/sbcl-source/")
+(let ((srcdir #p"/usr/share/sbcl-source/"))
+  (when (probe-file srcdir)
+    (sb-ext:set-sbcl-source-location srcdir)))
 
 ;; Get SBCL to shut up about package variance.  This is a standard result of
 ;; my approach to symbol exports, and I don't care.
@@ -126,7 +128,10 @@ (set-dispatch-macro-character
    (declare (ignore char arg))
    (values (read-line stream))))
 
-;; Start up swank.
+;; Use double-precision by default.
+(setf *read-default-float-format* 'double-float)
+
+;; Start up Swank.
 (export 'crank-swank)
 (defun crank-swank (&rest args)
   (let ((swank (find-package "SWANK")))