On Fri, Jun 2, 2017, at 06:14 PM, Donald Stufft wrote:
The steps here would basically be (for building from something that isn’t already a .tar.gz or a .whl):

That sounds OK to me. I think the only remaining point of contention is whether the build_sdist hook should make an archive or an unpacked directory. I'm not entirely sold, but Nick's point about not having to specify the archive format is enough that I've changed my PR to specify an unpacked sdist.