Reference PoC for 'packaging'

Author: brettcannon

peps/pep-0794.rst

@@ -193,7 +193,8 @@ still wouldn't require users to know the technical details of this PEP.
 Reference Implementation
 ========================
 
-XXX
+https://github.com/brettcannon/packaging/tree/pep-794 is a branch to update
+'packaging' to support this PEP.
 
 
 Rejected Ideas
@@ -209,12 +210,14 @@ proposes. Based on that difference and the fact that ``Provides`` is
 deprecated and thus could be ignored by preexisting code, the decision was
 made to go with a new field.
 
+
 Name the field ``Namespace``
 ----------------------------
 
 While the term "namespace" name is technically accurate from an import
 perspective, it could be confused with implicit namespace packages.
 
+
 Serving the ``RECORD`` file
 ---------------------------