All Products folders as well as the zope and zope.app folders are declared as...

All Products folders as well as the zope and zope.app folders are declared as setuptools namespace packages now. This allows products to be shipped and included as standard eggs without loosing any of their special Zope2 treatment. See http://mail.zope.org/pipermail/zope-dev/2007-April/029257.html for discussion.

doc/CHANGES.txt

@@ -9,6 +9,11 @@ Zope Changes
 
     Restructuring
 
+      - All Products folders as well as the zope and zope.app folders are
+        declared as setuptools namespace packages now. See
+        http://peak.telecommunity.com/DevCenter/setuptools#namespace-packages
+        for more information about namespace packages.
+
       - ZPT: removed display of ZPT warnings since warnings were
         removed from the zope.pagetemplate implementation     
 

lib/python/Products/__init__.py

@@ -11,3 +11,10 @@
 #
 ##############################################################################
 __ac_permissions__=()
+
+# See http://peak.telecommunity.com/DevCenter/setuptools#namespace-packages
+try:
+    __import__('pkg_resources').declare_namespace(__name__)
+except ImportError:
+    from pkgutil import extend_path
+    __path__ = extend_path(__path__, __name__)

lib/python/zope/__init__.py

@@ -13,10 +13,16 @@
 ##############################################################################
 """Zope Container Package
 
-This package uses pkgutil so that the package can be split over
+This package uses setuptools / pkgutil so that the package can be split over
 multiple directories.
 
+See http://peak.telecommunity.com/DevCenter/setuptools#namespace-packages
+
 $Id$
 """
-from pkgutil import extend_path
-__path__ = extend_path(__path__, __name__)
+
+try:
+    __import__('pkg_resources').declare_namespace(__name__)
+except ImportError:
+    from pkgutil import extend_path
+    __path__ = extend_path(__path__, __name__)

lib/python/zope/app/__init__.py

@@ -13,6 +13,16 @@
 ##############################################################################
 """Zope application package.
 
+This package uses setuptools / pkgutil so that the package can be split over
+multiple directories.
+
+See http://peak.telecommunity.com/DevCenter/setuptools#namespace-packages
+
 $Id$
 """
 
+try:
+    __import__('pkg_resources').declare_namespace(__name__)
+except ImportError:
+    from pkgutil import extend_path
+    __path__ = extend_path(__path__, __name__)

skel/Products/README.txt

 Additional products for your Zope instance should be installed in this
 directory.  A freshly created instance should only contain this
-README.txt file in this directory.
+README.txt file and an __init__.py in this directory.

skel/Products/__init__.py

+# See http://peak.telecommunity.com/DevCenter/setuptools#namespace-packages
+try:
+    __import__('pkg_resources').declare_namespace(__name__)
+except ImportError:
+    from pkgutil import extend_path
+    __path__ = extend_path(__path__, __name__)