--- a/devtools/migrtest.py	Mon Nov 23 18:13:20 2009 +0100
+++ b/devtools/migrtest.py	Mon Nov 23 19:01:17 2009 +0100
@@ -74,7 +74,7 @@
     sources['system']['db-host'] = None
     sources['system']['db-user'] = tmpdbuser
     sources['system']['db-password'] = None
-    generate_sources_file(join(testapplhome, 'sources'), sources)
+    generate_sources_file(applid, join(testapplhome, 'sources'), sources)
 ##     # create postgres password file so we won't need anymore passwords
 ##     # XXX may exist!
 ##     pgpassfile = expanduser('~/.pgpass')

--- a/server/serverconfig.py	Mon Nov 23 18:13:20 2009 +0100
+++ b/server/serverconfig.py	Mon Nov 23 19:01:17 2009 +0100
@@ -34,7 +34,16 @@
                   }),
     )
 
-def generate_sources_file(sourcesfile, sourcescfg, keys=None):
+class SourceConfiguration(Configuration):
+    def __init__(self, appid, options):
+        super(SourceConfiguration, self).__init__(options=options)
+        self.appid = appid
+
+    # make Method('default_instance_id') usable in db option defs (in native.py)
+    def default_instance_id
+        return self.appid
+
+def generate_sources_file(appid, sourcesfile, sourcescfg, keys=None):
     """serialize repository'sources configuration into a INI like file
 
     the `keys` parameter may be used to sort sections
@@ -54,7 +63,7 @@
                 options = USER_OPTIONS
             else:
                 options = SOURCE_TYPES[sconfig['adapter']].options
-            _sconfig = Configuration(options=options)
+            _sconfig = SourceConfiguration(appid, options=options)
             for attr, val in sconfig.items():
                 if attr == 'uri':
                     continue
@@ -242,7 +251,8 @@
         if exists(sourcesfile):
             import shutil
             shutil.copy(sourcesfile, sourcesfile + '.bak')
-        generate_sources_file(sourcesfile, sourcescfg, ['admin', 'system'])
+        generate_sources_file(self.appid, sourcesfile, sourcescfg,
+                              ['admin', 'system'])
         restrict_perms_to_user(sourcesfile)
 
     def pyro_enabled(self):

--- a/server/serverctl.py	Mon Nov 23 18:13:20 2009 +0100
+++ b/server/serverctl.py	Mon Nov 23 19:01:17 2009 +0100
@@ -14,11 +14,13 @@
 from logilab.common.clcommands import register_commands, cmd_run, pop_arg
 from logilab.common.shellutils import ASK
 
-from cubicweb import AuthenticationError, ExecutionError, ConfigurationError, underline_title
+from cubicweb import (AuthenticationError, ExecutionError, ConfigurationError,
+                      underline_title)
 from cubicweb.toolsutils import Command, CommandHandler
 from cubicweb.server import SOURCE_TYPES
 from cubicweb.server.utils import ask_source_config
-from cubicweb.server.serverconfig import USER_OPTIONS, ServerConfiguration
+from cubicweb.server.serverconfig import (USER_OPTIONS, ServerConfiguration,
+                                          SourceConfiguration)
 
 # utility functions ###########################################################
 
@@ -113,6 +115,7 @@
             config._cubes = None
         login, pwd = manager_userpasswd()
 
+
 # repository specific command handlers ########################################
 
 class RepositoryCreateHandler(CommandHandler):
@@ -135,8 +138,8 @@
         sourcesfile = config.sources_file()
         # XXX hack to make Method('default_instance_id') usable in db option
         # defs (in native.py)
-        Configuration.default_instance_id = staticmethod(lambda: config.appid)
-        sconfig = Configuration(options=SOURCE_TYPES['native'].options)
+        sconfig = SourceConfiguration(config.appid,
+                                      options=SOURCE_TYPES['native'].options)
         sconfig.adapter = 'native'
         sconfig.input_config(inputlevel=inputlevel)
         sourcescfg = {'system': sconfig}