June 15, 2017
1:12 p.m.
Yes, it's PEP 517 again! Here's the current text: https://www.python.org/dev/peps/pep-0517/ We currently say:
All other hooks [except get_build_requires] are executed in an environment which contains both the bootstrap requirements specified in the pyproject.toml hook and those specified by the get_build_requires hook.
It's not clear to me whether this should be required for the build_sdist and prepare_build_files hooks, nor whether there are any adverse consequences of specifying it like this anyway. Thoughts? I'm going to start putting together a wrapper to call the PEP517 hooks in a subprocess, which could be used by frontends. Thomas