diff -r 9cc05f592893 -r 4bd10504d386 autobuild/configfile.py
--- a/autobuild/configfile.py	Mon May 16 23:48:33 2011 +0100
+++ b/autobuild/configfile.py	Fri Jun 10 09:38:19 2011 +0100
@@ -199,6 +199,7 @@
                 for (name, package) in installables.iteritems():
                     self.installables[name] = PackageDescription(package)
                 self.update(saved_data)
+                os.environ['AUTOBUILD_CONFIG_FILE'] = os.path.basename(self.path)
                 logger.debug("Configuration file '%s'" % self.path)
             else:
                 if saved_data['version'] in update.updaters: