From b9b799ec1dc4fd3a5d38ed44683d0a447f76d117 Mon Sep 17 00:00:00 2001
From: abednarik <alejandro.bednarik@gmail.com>
Date: Tue, 22 Dec 2015 17:21:49 -0300
Subject: [PATCH] modules.softwareupdate: __virtual__ return err msg.

Updated message when return False if is not MacOS system.
---
 salt/modules/softwareupdate.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/salt/modules/softwareupdate.py b/salt/modules/softwareupdate.py
index 5ad00fefc9..299bcd6e43 100644
--- a/salt/modules/softwareupdate.py
+++ b/salt/modules/softwareupdate.py
@@ -19,7 +19,10 @@ def __virtual__():
     '''
     Only for MacOS
     '''
-    return __virtualname__ if __grains__['os'] == 'MacOS' else False
+    if __grains__['os'] == 'MacOS':
+        return __virtualname__
+    return (False, 'The softwareupdate module could not be loaded: '
+            'module only works on MacOS systems.')
 
 
 def _get_upgradable(rec=False, restart=False):