Vendor keyring-subprocess

pyproject.toml

@@ -56,6 +56,10 @@ drop = [
   '^pygments/lexers/(?!python|__init__|_mapping).*\.py$',
   # trim rich's markdown support
   "rich/markdown.py",
+  # unneeded parts of keyring-subprocess
+  "keyring-subprocess.pth",
+  "keyring_subprocess/_vendor/",
+  "keyring_subprocess/_internal/wheels/",
 ]
 
 [tool.vendoring.typing-stubs]

src/pip/_vendor/importlib_metadata/LICENSE

@@ -0,0 +1,13 @@
+Copyright 2017-2019 Jason R. Coombs, Barry Warsaw
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.