Thanks Dashamir for review.
After going through the list,
Keycloak was something which impressed me. I shall give it a try sometime.
However, all of them do a lot of work and are much configurable. I wanted to develop something with sensible defaults and fewer customizations.
It should not be dealing with authorization (neither RBAC, UBAC, nor LDAP etc.). It should deal with only the authentication part.
That's my opinion. Debian might have its own set of requirements.
Well, I would still want to figure out why the same is available on the ideas page. Are there any specific requirements which are not fulfilled by current tools?
Alexander, are you on this list?