There’s a Django app called Bridgekeeper that goes a fair way toward doing this (of course, via the Django ORM). It’s got some pretty major design flaws of its

There’s a Django app called Bridgekeeper that goes a fair way toward doing this (of course, via the Django ORM). It’s got some pretty major design flaws of its own, and unfortunately hasn’t gotten much love in quite some time. However I still find the concept / intent to be quite telling. It certainly feels like it’s in the right ballpark.