On Fri, Aug 25, 2017, at 10:26 PM, xoviat wrote:
> I'm more or less persuaded by Nathaniel's argument that the source directory shouldn't be on sys.path

I do too. There should be an option in pyproject.toml to disable this behavior though so that numpy can build itself.

I'm not sure that's necessary:
- As I've described, a special shim backend could load hooks from the source directory. This doesn't need us to specify another option in the toml file.
- Nathaniel is one of the core numpy developers, so if he's not asking for that switch, numpy presumably doesn't need it. :-)