[pythononwheels]

NDB is a good hint. But the problem remains that I want PoW to be able to support SQL DBs also. I think SQLAlchemy is a really mature framework for that area. So I need to generate the models in two ways.. I think I need to separate this as an extension since I do not want to have two PoWs, where one is for GAE and one for SQL.

[tbatterii]

that's the thing with gae, if you want to pretend you aren't going to use it and instead try to abstract away that fact, you are in for a world of pain. you either do gae, or not... no waffling.