From a63a8069b1c6b19594df795191fd1969326053e3 Mon Sep 17 00:00:00 2001
From: Wojciech Zygmunt Porczyk <wojciech@porczyk.eu>
Date: Mon, 5 May 2014 22:23:43 +0200
Subject: [PATCH] QubesVm: setter hook passes old value

This is part of #827 bug.
---
 core-modules/000QubesVm.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/core-modules/000QubesVm.py b/core-modules/000QubesVm.py
index a0ea6190..937a360b 100644
--- a/core-modules/000QubesVm.py
+++ b/core-modules/000QubesVm.py
@@ -219,9 +219,9 @@ class QubesVm(object):
             attrs = hook(self, attrs)
         return attrs
 
-    def post_set_attr(self, attr, value):
+    def post_set_attr(self, attr, newvalue, oldvalue):
         for hook in self.hooks_set_attr:
-            hook(self, attr, value)
+            hook(self, attr, newvalue, oldvalue)
 
     def __basic_parse_xml_attr(self, value):
         if value is None:
@@ -523,8 +523,9 @@ class QubesVm(object):
 
     @internal.setter
     def internal(self, value):
+        oldvalue = self._internal
         self._internal = value
-        self.post_set_attr('internal', value)
+        self.post_set_attr('internal', value, oldvalue)
 
     @property
     def autostart(self):