So I think the big thing to reconcile is the thing where I say out of scope - using static metadata in distributions. The dynamic/non-dynamic split may or may not be needed; but examining source trees and sdists as different only makes sense to me if you're gaining something - and pregenerated declarative dependencies might be one of those things. OTOH since we haven't solved the numpy ABI problem yet... perhaps thats premature. btw - note that this: ---- 2) There currently exist packages which do not declare consistent metadata (e.g. ``egg_info`` and ``bdist_wheel`` might get different ``install_requires=``). When upgrading to the new system, projects will have to evaluate whether this applies to them, and if so they will need to stop doing that. ---- is actually a feature today. egg_info gets you the follow-these-rules-locally with older pip versions like 1.5.4, and bdist_wheel gets you a marker-ready set of dependencies. -Rob