Changing a default auth implementation to use email instead of username.

[Chathura Madusanka]

As of now(2022/5/16) almost all websites that gives login functionality to users Use Email + password method. But Django uses username + password method. I feel like that is wrong .
So I think,

1) default method should be email + password.
2) Email verification methods should also be included and managed by settings
3) method should be changeable by settings(uName+password , email+password , uName , password ,any other)
4) if possible Allauth default integration (with methods like :- normal auth(without admin) , normal+admin auth )

should be .

[Mariusz Felisiak]

Thanks for this ticket, however, it is a set of various proposition, some duplicates, some are "wontfix" without a proper discussion and reaching a consensus on the DevelopersMailingList.

1) default method should be email + password.
2) Email verification methods should also be included and managed by settings
3) method should be changeable by settings(uName+password , email+password , uName , password ,any other)

Django has pluggable authentication backends and you can achieve this by following the ​docs, it's duplicate of #7591.

Changing a default implementation would be backward incompatible, so first we have to reach a strong consensus on the DevelopersMailingList. A clear deprecation path is also required ("wontfix".)

4) if possible Allauth default integration (with methods like :- normal auth(without admin) , normal+admin auth )

Using django-allauth is already possible and I don't see any advantages in including it in Django itself ("wontfix".)