[Distutils] Fwd: Re: PEP 517 again

Nathaniel Smith njs at pobox.com
Fri Aug 25 00:24:14 EDT 2017

On Thu, Aug 24, 2017 at 9:17 PM, xoviat <xoviat at gmail.com> wrote:
> > I'm *not* OK with banning in-tree builds in the spec, since that's
> > both unnecessary and unenforceable
> Well then either we can trust the backend or we cannot. If we can, then this
> is both necessary and enforceable. If not, then we're back to pip copying
> files. You can't make and argument that it's okay to trust build_sdist but
> not build_wheel.

I think at this point everyone has made their peace with the pip
developers' decision that they want to keep copying files -- at least
for now -- and that's just how it's going to be. This email has a more
detailed discussion of the options, their "threat model", and the


I can see an argument for adding language saying that build_sdist
SHOULD avoid modifying the source tree if possible, and MAY write
scratch files to the sdist_directory.


Nathaniel J. Smith -- https://vorpus.org

More information about the Distutils-SIG mailing list