1 files changed, 20 insertions, 2 deletions
diff --git a/lib/sqlalchemy/util/_has_cy.py b/lib/sqlalchemy/util/_has_cy.py
index cf68c1933..072c78d2c 100644
--- a/lib/sqlalchemy/util/_has_cy.py
+++ b/lib/sqlalchemy/util/_has_cy.py
@@ -1,14 +1,32 @@
-# mypy: allow-untyped-defs, allow-untyped-calls
+# Copyright (C) 2005-2022 the SQLAlchemy authors and contributors
+# <see AUTHORS file>
+#
+# This module is part of SQLAlchemy and is released under
+# the MIT License: https://www.opensource.org/licenses/mit-license.php
+# mypy: ignore-errors
 
 import os
 import typing
 
+
+def _import_cy_extensions():
+    # all cython extension extension modules are treated as optional by the
+    # setup, so to ensure that all are compiled, all should be imported here
+    from ..cyextension import collections
+    from ..cyextension import immutabledict
+    from ..cyextension import processors
+    from ..cyextension import resultproxy
+    from ..cyextension import util
+
+    return (collections, immutabledict, processors, resultproxy, util)
+
+
 if not typing.TYPE_CHECKING:
     if os.environ.get("DISABLE_SQLALCHEMY_CEXT_RUNTIME"):
         HAS_CYEXTENSION = False
     else:
         try:
-            from ..cyextension import util  # noqa
+            _import_cy_extensions()
         except ImportError:
             HAS_CYEXTENSION = False
         else: