From 79b05df22ff7ed7eb973a1f70475a58e50eb6852 Mon Sep 17 00:00:00 2001
From: artcg <arthurgoldbergfwd@gmail.com>
Date: Sat, 20 Mar 2021 17:50:07 +0100
Subject: [PATCH 1/3] fix?: recursion error on Sanic subclass init

---
 sanic/base.py | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/sanic/base.py b/sanic/base.py
index 5170614950..185449dfa9 100644
--- a/sanic/base.py
+++ b/sanic/base.py
@@ -16,9 +16,7 @@ def __init__(self, *args, **kwargs):
             nonlocal init
             nonlocal name
 
-            bases = [
-                b for base in type(self).__bases__ for b in base.__bases__
-            ]
+            bases = BaseSanic.__bases__
 
             for base in bases:
                 base.__init__(self, *args, **kwargs)

From f022ad3e98e7db476bbbdd6536d510fcaa873d24 Mon Sep 17 00:00:00 2001
From: artcg <arthurgoldbergfwd@gmail.com>
Date: Sun, 21 Mar 2021 02:32:26 +0100
Subject: [PATCH 2/3] tests: add test case for sanic subclass initialisation

---
 tests/test_app.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tests/test_app.py b/tests/test_app.py
index bfe7900c23..f096496a47 100644
--- a/tests/test_app.py
+++ b/tests/test_app.py
@@ -405,3 +405,10 @@ def test_app_set_context(app):
 
     retrieved = Sanic.get_app(app.name)
     assert retrieved.ctx.foo == 1
+
+
+def test_subclass_initialisation():
+    class CustomSanic(Sanic):
+        pass
+
+    CustomSanic("test_subclass_initialisation")

From 1a3820950ece5e0150f7464fedecfe1c350f671b Mon Sep 17 00:00:00 2001
From: Adam Hopkins <admhpkns@gmail.com>
Date: Sun, 21 Mar 2021 09:45:58 +0200
Subject: [PATCH 3/3] Remove BaseSanic metaclass

---
 sanic/base.py       | 25 ++++---------------------
 sanic/blueprints.py |  1 +
 2 files changed, 5 insertions(+), 21 deletions(-)

diff --git a/sanic/base.py b/sanic/base.py
index 185449dfa9..368288c408 100644
--- a/sanic/base.py
+++ b/sanic/base.py
@@ -8,36 +8,19 @@
 from sanic.mixins.signals import SignalMixin
 
 
-class Base(type):
-    def __new__(cls, name, bases, attrs):
-        init = attrs.get("__init__")
-
-        def __init__(self, *args, **kwargs):
-            nonlocal init
-            nonlocal name
-
-            bases = BaseSanic.__bases__
-
-            for base in bases:
-                base.__init__(self, *args, **kwargs)
-
-            if init:
-                init(self, *args, **kwargs)
-
-        attrs["__init__"] = __init__
-        return type.__new__(cls, name, bases, attrs)
-
-
 class BaseSanic(
     RouteMixin,
     MiddlewareMixin,
     ListenerMixin,
     ExceptionMixin,
     SignalMixin,
-    metaclass=Base,
 ):
     __fake_slots__: Tuple[str, ...]
 
+    def __init__(self, *args, **kwargs) -> None:
+        for base in BaseSanic.__bases__:
+            base.__init__(self, *args, **kwargs)  # type: ignore
+
     def __str__(self) -> str:
         return f"<{self.__class__.__name__} {self.name}>"
 
diff --git a/sanic/blueprints.py b/sanic/blueprints.py
index f8b0323c00..85b60ddc18 100644
--- a/sanic/blueprints.py
+++ b/sanic/blueprints.py
@@ -73,6 +73,7 @@ def __init__(
         version: Optional[int] = None,
         strict_slashes: Optional[bool] = None,
     ):
+        super().__init__()
 
         self._apps: Set[Sanic] = set()
         self.ctx = SimpleNamespace()