My 2 cents: I think at a minimum we should get PEP 518 support into pip first. I don't think layering more things on top of a PEP that isn't yet implemented is a good approach to this. Sent from my iPhone > On Nov 23, 2016, at 9:35 AM, Thomas Kluyver <thomas at kluyver.me.uk> wrote: > > I'd like to push PEP 517 forwards again.