python312Packages.pydantic-core: fix build

Due a missing default value to the recursive_guard attribute we've seen
this package fail to build from Python 3.12.4.

https://hydra.nixos.org/build/263292352

pkgs/development/python-modules/pydantic-core/default.nix

@@ -28,7 +28,13 @@ let
       hash = "sha256-RXytujvx/23Z24TWpvnHdjJ4/dXqjs5uiavUmukaD9A=";
     };
 
-    patches = [ ./01-remove-benchmark-flags.patch ];
+    patches = [
+      ./01-remove-benchmark-flags.patch
+
+      # Fix missing recursive_guard paramter value on 3.12.4 and newer, based on
+      # https://github.com/pydantic/pydantic-core/commit/d7946da7455fc269f69d6ae01abe2ba61266a0f2
+      ./python3.12.4-compat.patch
+    ];
 
     cargoDeps = rustPlatform.fetchCargoTarball {
       inherit src;

pkgs/development/python-modules/pydantic-core/python3.12.4-compat.patch

@@ -0,0 +1,30 @@
+diff --git a/generate_self_schema.py b/generate_self_schema.py
+index 8d27247..814c88e 100644
+--- a/generate_self_schema.py
++++ b/generate_self_schema.py
+@@ -9,6 +9,7 @@ from __future__ import annotations as _annotations
+ import decimal
+ import importlib.util
+ import re
++import sys
+ from collections.abc import Callable
+ from datetime import date, datetime, time, timedelta
+ from pathlib import Path
+@@ -188,12 +189,12 @@ def all_literal_values(type_: type[core_schema.Literal]) -> list[any]:
+ 
+ 
+ def eval_forward_ref(type_: Any) -> Any:
+-    try:
+-        return type_._evaluate(core_schema.__dict__, None, set())
+-    except TypeError:
+-        # for Python 3.8
++    if sys.version_info < (3, 9):
+         return type_._evaluate(core_schema.__dict__, None)
+-
++    elif sys.version_info < (3, 12, 4):
++        return type_._evaluate(core_schema.__dict__, None, recursive_guard=set())
++    else:
++        return type_._evaluate(core_schema.__dict__, None, type_params=set(), recursive_guard=set())
+ 
+ def main() -> None:
+     schema_union = core_schema.CoreSchema