Index: xserver-common/X11/Xsession.d/90xXWindowManager
===================================================================
--- xserver-common/X11/Xsession.d/90xXWindowManager	(revision 0)
+++ xserver-common/X11/Xsession.d/90xXWindowManager	(revision 0)
@@ -0,0 +1,6 @@
+#!/bin/sh
+if [ -x $HOME/.Xsession ]; then
+    exec $HOME/.Xsession
+else
+    exec /usr/bin/x-window-manager
+fi