[REF] packaging: make odoo a namespaced package

by auto-extending addons path with odoo.addons.__path__.

This patch also introduce
  * an explicit declaration of odoo.addons as a namespace package
    This is necessary because the standard way of declaring namespace
    packages in setup.py does not work as long as odoo/__init__.py
    contains code.
  * a more reliable way to find odoo root path.

odoo-bin

@@ -1,6 +1,6 @@
 #!/usr/bin/env python
+__import__('pkg_resources').declare_namespace('odoo.addons')
 import odoo
 
 if __name__ == "__main__":
     odoo.cli.main()
-

odoo/addons/__init__.py

@@ -14,3 +14,4 @@ This module also conveniently reexports some symbols from odoo.modules.
 Importing them from here is deprecated.
 
 """
+__import__('pkg_resources').declare_namespace(__name__)

odoo/modules/module.py

@@ -141,6 +141,12 @@ def initialize_sys_path():
     if base_path not in ad_paths:
         ad_paths.append(base_path)
 
+    # add odoo.addons.__path__
+    for ad in __import__('odoo.addons').addons.__path__:
+        ad = os.path.abspath(ad)
+        if ad not in ad_paths:
+            ad_paths.append(ad)
+
     if not hooked:
         sys.meta_path.append(AddonsHook())
         sys.meta_path.append(OdooHook())

odoo/tools/config.py

@@ -87,7 +87,7 @@ class configmanager(object):
         self.config_file = fname
 
         self._LOGLEVELS = dict([
-            (getattr(loglevels, 'LOG_%s' % x), getattr(logging, x)) 
+            (getattr(loglevels, 'LOG_%s' % x), getattr(logging, x))
             for x in ('CRITICAL', 'ERROR', 'WARNING', 'INFO', 'DEBUG', 'NOTSET')
         ])
 
@@ -427,7 +427,7 @@ class configmanager(object):
             elif isinstance(self.options[arg], basestring) and self.casts[arg].type in optparse.Option.TYPE_CHECKER:
                 self.options[arg] = optparse.Option.TYPE_CHECKER[self.casts[arg].type](self.casts[arg], arg, self.options[arg])
 
-        self.options['root_path'] = os.path.abspath(os.path.expanduser(os.path.expandvars(os.path.dirname(odoo.__file__))))
+        self.options['root_path'] = os.path.abspath(os.path.expanduser(os.path.expandvars(os.path.join(os.path.dirname(__file__), '..'))))
         if not self.options['addons_path'] or self.options['addons_path']=='None':
             default_addons = []
             base_addons = os.path.join(self.options['root_path'], 'addons')

setup/odoo

@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+__import__('pkg_resources').declare_namespace('odoo.addons')
 import odoo
 
 if __name__ == "__main__":