|> validate_confirmation(:password)
|> unique_constraint(:email)
|> unique_constraint(:nickname)
+ |> validate_exclusion(:nickname, Pleroma.Config.get([Pleroma.User, :restricted_nicknames]))
|> validate_format(:nickname, local_nickname_regex())
|> validate_format(:email, @email_regex)
|> validate_length(:bio, max: 1000)