First commit

pkgs/xformers/_deprecation_warning.py

@@ -0,0 +1,12 @@
+# Copyright (c) Facebook, Inc. and its affiliates. All rights reserved.
+#
+# This source code is licensed under the BSD license found in the
+# LICENSE file in the root directory of this source tree.
+
+import warnings
+
+
+def deprecated_function(self):
+    name = repr(self)  # self.__name__
+    msg = f"{name} is deprecated and is not maintained anymore. It might be removed in a future version of xFormers"
+    warnings.warn(msg, FutureWarning, stacklevel=2)