The implementation for PEP 488 is basically done (sans Windows installer stuff). I did the work in a features repo at https://hg.python.org/features/pep-488/ . Once I have addressed reviewer comments at http://bugs.python.org/issue23731 , would people prefer I simply push the features repo to hg.python.org/cpython and have the more granular history but have various "merge default" commits, or would people rather I do one massive commit?