typing.Self は Python 3.10 には未実装か，さぅか．

my_eloquent.py

@@ -1,5 +1,3 @@
-from typing import Self
-
 import eloquent
 
 
@@ -25,7 +23,7 @@ class Model (eloquent.Model):
     def with_ (
             cls,
             *relations: str,
-    ) -> eloquent.QueryBuilder[Self]:
+    ) -> eloquent.QueryBuilder:
         q = cls.query ()
         for relation in relations:
             q = q._load_relation (relation)