PEP 462: Add section on possible Mercurial integration

pep-0462.txt

@@ -495,6 +495,31 @@ simpler than that from OpenStack's more complex multi-service testing, and
 hence likely even more amenable to automated analysis.
 
 
+Enhancing Mercurial/Rietveld/Roundup integration
+------------------------------------------------
+
+One useful part of the OpenStack workflow is the "git review" plugin,
+which makes it relatively easy to push a branch from a local git clone up
+to Gerrit for review.
+
+It seems that it should be possible to create a plugin that similarly
+integrates Mercurial queues with Rietveld and Roundup, allowing a draft
+patch to be uploaded as easily as running a command like "hg qpost" with a
+suitable .hgqpost configuration file checked in to the source repo.
+
+(There's an existing `hg review <http://sjl.bitbucket.org/hg-review/>`__,
+plugin hence the suggestion of ``hg qpost`` as an alternate command)
+
+It would also be good to work directly with the Mercurial folks to come up
+with a tailored CPython-specific tutorial for using Mercurial queues and
+other extensions to work effectively with the CPython repository structure.
+We have some of that already in the developer guide, but I've come to believe
+that we may want to start getting more opinionated as to which extensions
+we recommend using, especially for users that have previously learned
+``git`` and need to know which extensions to enable to gain a similar level
+of flexibility in their local workflow from Mercurial.
+
+
 Social Challenges
 =================