We haven't yet thoroughly looked into it, but it could be possible. Especially for Supabase since they support integrating with Prisma (https://supabase.com/docs/guides/integrations/prisma) which Wasp uses as a db layer.

I think the main question here is what experience we want to offer and which level of integration (e.g. with Wasp's entity models) we can achieve. Do you have any particular features of Supabase/Hasura that you'd like to use?