# HG changeset patch
# User Bryan O'Sullivan <bos@serpentine.com>
# Date 1184884173 25200
# Node ID c8d1aa1822d57403af512e221315d244ea6b2678
# Parent  3e25a6eb5c9aab6742fe73ebbfaddf9244f520e3
Print meaningful error message if os.symlink fails

diff --git a/mercurial/util.py b/mercurial/util.py
--- a/mercurial/util.py
+++ b/mercurial/util.py
@@ -1303,7 +1303,11 @@ class opener(object):
             os.makedirs(dirname)
 
         if self._can_symlink:
-            os.symlink(src, linkname)
+            try:
+                os.symlink(src, linkname)
+            except OSError, err:
+                raise OSError(err.errno, _('could not symlink to %r: %s') %
+                              (src, err.strerror), linkname)
         else:
             f = self(self, dst, "w")
             f.write(src)