Add support for pydantic v2 via pydantic.v1 compat module (#16332)

While maintaining support with pydantic v1.

1 files changed, 6 insertions, 1 deletions

diff --git a/synapse/storage/background_updates.py b/synapse/storage/background_updates.py
index 99ebd96f84..12829d3d7d 100644
--- a/synapse/storage/background_updates.py
+++ b/synapse/storage/background_updates.py
@@ -31,8 +31,8 @@ from typing import (
 )
 
 import attr
-from pydantic import BaseModel
 
+from synapse._pydantic_compat import HAS_PYDANTIC_V2
 from synapse.metrics.background_process_metrics import run_as_background_process
 from synapse.storage.engines import PostgresEngine
 from synapse.storage.types import Connection, Cursor
@@ -41,6 +41,11 @@ from synapse.util import Clock, json_encoder
 
 from . import engines
 
+if TYPE_CHECKING or HAS_PYDANTIC_V2:
+    from pydantic.v1 import BaseModel
+else:
+    from pydantic import BaseModel
+
 if TYPE_CHECKING:
     from synapse.server import HomeServer
     from synapse.storage.database import DatabasePool, LoggingTransaction