_pydantic_compat: fix HAS_PYDANTIC_V2 version check

Old pydantic v1 versions do not define `__version__`.
matrix-org · Sep 19, 2023 · 1dd3295 · 1dd3295
1 parent a4289cb
commit 1dd3295
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/synapse/_pydantic_compat.py b/synapse/_pydantic_compat.py
@@ -1,5 +1,11 @@
 from packaging.version import Version
-from pydantic import __version__ as pydantic_version
+
+try:
+    from pydantic import __version__ as pydantic_version
+except ImportError:
+    import importlib.metadata
+
+    pydantic_version = importlib.metadata.version("pydantic")
 
 HAS_PYDANTIC_V2: bool = Version(pydantic_version).major == 2