--- pip-21.1.1/src/pip/_vendor/__init__.py.orig	2021-05-23 16:02:55.105064300 +0530
+++ pip-21.1.1/src/pip/_vendor/__init__.py	2021-05-23 16:10:22.105230100 +0530
@@ -46,6 +46,8 @@
         base, head = vendored_name.rsplit(".", 1)
         setattr(sys.modules[base], head, sys.modules[modulename])
 
+# Use system distlib rather than the one vendored.
+vendored("distlib")
 
 # If we're operating in a debundled setup, then we want to go ahead and trigger
 # the aliasing of our vendored libraries as well as looking for wheels to add
