[Zope3-dev] Removing hard dependency from zope.i18nmessageid C extension

[Christian Heimes]

Hi folks!

With the new i18nmessageid c module in zope.i18nmessageid it is no 
longer possible to use zope.schema and zope.i18n w/o a c extensions. 
Although zope.interface has an optimized module in c like 
zope.i18nmessageid there is also a python only implementation.

I would like to see such a python only implementation in 
zope.i18nmessageid, too. Hey as far as I can see there *is* already a 
python only implementation in zope.i18nmessageid.messageid. :) I know 
it's going to be removed in ZopeX3.2 but as long we have it can we 
please change the zope.i18nmessageid package like I propose?

old:
from messageid import MessageID, MessageIDFactory
from message import Message, MessageFactory

my proposal:
from messageid import MessageID, MessageIDFactory
try:
     from _zope_i18nmessageid_message import Message
except ImportError:
     # c optimization not availabel
     Message = MessageID
     MessageFactory = MessageIDFactory
else:
     from message import Message, MessageFactory

It would ease up using parts of ZopeX3 on windows and unix because won't 
need to install or compile binary extensions.

Christian