[Distutils] Provisionally accepting PEP 517's declarative build system interface

[Donald Stufft]

> On May 29, 2017, at 3:05 AM, Nathaniel Smith <njs at pobox.com> wrote:
> 
> I think there's some pip bug somewhere discussing this, where Ralf
> Gommers and I point out that this is a complete showstopper for
> projects with complex and expensive builds (like scipy). If 'pip
> install .' is going to replace 'setup.py install', then it needs to
> support incremental builds, and the way
> setup.py-and-almost-every-other-build-tool do this currently is by
> reusing the working directory across builds.


Wouldn’t supporting incremental builds the way ccache does work just fine? Have a per build tool cache directory somewhere that stores cached build output for each individual file keyed off a hash or something? (For that matter, if someone wants incremental rebuilds, couldn’t they just *use* ccache as their CC?).

—
Donald Stufft



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