refactor 'QUBESD_SOCKET' into separate module

This will avoid cyclic imports in upcoming events implementation

qubesmgmt/__init__.py

@@ -21,12 +21,14 @@
 '''Qubes OS management client.'''
 
 import os
+
+import qubesmgmt.config
 import qubesmgmt.base
 import qubesmgmt.app
 
 DEFAULT = qubesmgmt.base.DEFAULT
 
-if os.path.exists(qubesmgmt.app.QUBESD_SOCK):
+if os.path.exists(qubesmgmt.config.QUBESD_SOCKET):
     Qubes = qubesmgmt.app.QubesLocal
 else:
     Qubes = qubesmgmt.app.QubesRemote

qubesmgmt/app.py

@@ -27,13 +27,13 @@ import socket
 import subprocess
 
 import qubesmgmt.base
-import qubesmgmt.vm
-import qubesmgmt.label
 import qubesmgmt.exc
-import qubesmgmt.utils
+import qubesmgmt.label
 import qubesmgmt.storage
+import qubesmgmt.utils
+import qubesmgmt.vm
+import qubesmgmt.config
 
-QUBESD_SOCK = '/var/run/qubesd.sock'
 BUF_SIZE = 4096
 
 
@@ -103,7 +103,6 @@ class VMCollection(object):
         return self._vm_list.keys()
 
 
-
 class QubesBase(qubesmgmt.base.PropertyHolder):
     '''Main Qubes application'''
 
@@ -182,7 +181,7 @@ class QubesLocal(QubesBase):
     def qubesd_call(self, dest, method, arg=None, payload=None):
         try:
             client_socket = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
-            client_socket.connect(QUBESD_SOCK)
+            client_socket.connect(qubesmgmt.config.QUBESD_SOCKET)
         except IOError:
             # TODO:
             raise

qubesmgmt/config.py

@@ -0,0 +1,24 @@
+# -*- encoding: utf8 -*-
+#
+# The Qubes OS Project, http://www.qubes-os.org
+#
+# Copyright (C) 2017 Marek Marczykowski-Górecki
+#                               <marmarek@invisiblethingslab.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation; either version 2.1 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License along
+# with this program; if not, see <http://www.gnu.org/licenses/>.
+
+'''Configuration variables/constants'''
+
+#: path to qubesd socket
+QUBESD_SOCKET = '/var/run/qubesd.sock'