Add an open issue about marker and needs per package version

Author: brettcannon

pep-0665.rst

@@ -1006,6 +1006,21 @@ lived along side ``needs`` and would only be specified if it would
 differ from what is specified in ``needs``.
 
 
+-----------------------------------------
+Providing `marker` and `tags` per Package
+-----------------------------------------
+
+It has been suggested to allow for the `marker` and `tags` keys as
+found in the `[metadata]` table in `[package]` tables as well. This
+would allow lockers to specify when a version of a package should be
+considered. This also has the potential for lowering computational
+costs for installers by assisting them in knowing when to remove a
+package version from consideration.
+
+This does, though, somewhat duplicate environment markers being kept
+in the `needs` array.
+
+
 ===============
 Acknowledgments
 ===============