Supabase currently supplies a lot of social authentication method.
However we can use only email and google login by using supabase auth in FF.
There were several requests about this issue, can you provide FF's future roadmap regarding to this one?
Also, as someone commented in below link, if FF doesn't have plan about this issue it might be great to have some guides for custom code login!
https://community.flutterflow.io/authentication/post/supabase-auth-providers-IN2InSTmRYPzxFc