Vendor pyyaml for 2to3 compat

fsfs/policy.py

@@ -125,7 +125,7 @@ def set_id_generator(self, func):
 # Yaml Encoder / Decoder
 # Used as Default when pyyaml is available
 try:
-    import yaml
+    from fsfs.vendor import yaml
     YamlDecoder = yaml.safe_load
     YamlEncoder = partial(
         yaml.safe_dump,

fsfs/vendor/yaml/LICENSE

@@ -0,0 +1,20 @@
+Copyright (c) 2017-2020 Ingy döt Net
+Copyright (c) 2006-2016 Kirill Simonov
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

fsfs/vendor/yaml/__init__.py

@@ -0,0 +1,10 @@
+import sys
+
+try:
+    import yaml2 as yaml_
+except ImportError:
+    from . import yaml3 as yaml_
+
+
+# Replace this stub with actual yaml module
+sys.modules[__name__] = yaml_