diff -r 368d8902e597 -r 8909800a8c51 migration.py
--- a/migration.py	Fri Nov 04 13:03:52 2011 +0100
+++ b/migration.py	Fri Nov 04 13:03:56 2011 +0100
@@ -34,6 +34,7 @@
 
 from cubicweb import ConfigurationError, ExecutionError
 from cubicweb.cwconfig import CubicWebConfiguration as cwcfg
+from cubicweb.toolsutils import show_diffs
 
 def filter_scripts(config, directory, fromversion, toversion, quiet=True):
     """return a list of paths of migration files to consider to upgrade
@@ -417,8 +418,6 @@
         return removed
 
     def rewrite_configuration(self):
-        # import locally, show_diffs unavailable in gae environment
-        from cubicweb.toolsutils import show_diffs
         configfile = self.config.main_config_file()
         if self._option_changes:
             read_old_config(self.config, self._option_changes, configfile)