fix envlist calculation

+ fix pathed loggers mechanism

devices.py

@@ -172,7 +172,8 @@ class FrappyConfig(Device):
             if not busy and self._back_to_normal:
                 session.log.info('  %s', 75*'_')
                 session.log.info(' ')
-                session.log.info(all_info(self._current_cfgs, '  servers match configuration: '))
+                session.log.info('  sample environment servers match configuration:')
+                session.log.info(all_info(self._current_cfgs, '  '))
                 session.log.info('  %s', 75*'_')
                 self._back_to_normal = None
             cnt = 0
@@ -328,7 +329,7 @@ class FrappyConfig(Device):
                 cleanup_defunct()
                 CreateAllDevices()
             for service, secnode in secnodes.items():
-                if services.get(service):
+                if services.get(service) and secnode:
                     secnode._secnode.connect()
             self.set_envalias()
             for secnode in remove_cfg:
@@ -573,11 +574,11 @@ class FrappyConfig(Device):
              else:
                  needed_aliases[aliasname] = None
 
-        # build new env list
-        prevenv = session.experiment.envlist
-        addedenv = [v for v in newenv.values() if v not in to_remove]
+        # build new env list. keep order as before
+        addedenv = [v for v in newenv.values()]
         to_remove = to_remove.difference(addedenv)
-        envlist = [k for k in prevenv if k not in to_remove] + addedenv
+        prevenv = [k for k in session.experiment.envlist if k not in to_remove]
+        envlist = prevenv + [k for k in addedenv if k not in prevenv]
         if set(envlist) == set(prevenv):
             envlist = None
 
@@ -705,7 +706,6 @@ class FrappyNode(SecNodeDevice, Moveable):
         return self._cfgvalue or ''
 
     def createDevices(self):
-        cfg = self.read()
         super().createDevices()
         if self.param_category:
             for devname, (_, devcfg) in self.setup_info.items():
@@ -717,13 +717,13 @@ class FrappyNode(SecNodeDevice, Moveable):
                         pinfo.category = self.param_category
 
     def makeDynamicDevices(self, setup_info):
-        patched_loggers = []
+        patched_loggers = {}
         if self.quiet_init:
             for devname, (_, devcfg) in setup_info.items():
                 log = session.getLogger(devname)
                 if log not in patched_loggers:
                     result = [loggers.INFO]  # default level
-                    patched_loggers.append((log, result))
+                    patched_loggers[log] = result
                     log.setLevel(loggers.ERROR)
                     # avoid level change when the loglevel parameter is treated
                     # store level instead in result
@@ -731,7 +731,7 @@ class FrappyNode(SecNodeDevice, Moveable):
         try:
             super().makeDynamicDevices(setup_info)
         finally:
-            for log, result in patched_loggers:
+            for log, result in patched_loggers.items():
                 log.__dict__.pop('setLevel', None)  # re-enable setLevel
                 log.setLevel(result[-1])  # set to stored or default value