This is an extension on the django-stubs project that makes it possible to represent all concrete descendants of an abstract Django ORM Model in terms of those abstract models.
The intention is to get this code working and tested and documented before
getting those changes into the django-stubs project itself.
https://extended-mypy-django-plugin.readthedocs.io
This project comes from working on a large Django project (millions of lines of
code) that has varying levels of typing maturity within it. In working towards
getting that project onto the latest version of mypy and django-stubs
there twere 100s of errors that appeared due to mypy correctly complaining
about abstract model types not having on them properties that are only on their
concrete descendants. This project was created to resolve this issue without
simply ignoring the problem.