[Distutils] Meeting info re: sdists

[Wes Turner]

On Oct 14, 2015 3:33 AM, "Paul Moore" <p.f.moore at gmail.com> wrote:
>
> On 14 October 2015 at 01:46, Robert Collins <robertc at robertcollins.net>
wrote:
> > On 14 October 2015 at 13:25, Marcus Smith <qwcode at gmail.com> wrote:
> >>
> >>
> >> thanks for the summary!
>
> Agreed.
>
> >>
> >>>   * Things that have reason to change (deps) are more reasonable to be
> >>> dynamic (even with PEP-426 markers there are exceptions)
> >>
> >>
> >> as we know, for *many* cases, run-time deps aren't dynamic.
> >> is there a consensus for those cases?  exist in the sdist metadata? or
no?
> >
> > The plan we hashed out (this would be the new PEP on static metadata in
sdists)
> >  - pip etc to lint and error if they encounter a malformed dist-info in
an sdist
> >  - then start putting dist-info, not egg-info into sdists
> >  - for any field if the field is entirely absent, we'll get it by
> > running the dist-info build-tool command I described in the other
> > mails

so, validate and transform to OrderedDicts which can then be json.dump'd to
metadata.jsonld?

> >
> > Concretely:
> > {'build_requires': []} -> no build requirements
> > {} -> get build requirements by running the build system
>
> One use case that I don't think is covered here is publishing
> dependency metadata via PyPI. I believe distlib needs this for some
> functions (at the moment, I think it uses an externally hosted set of
> package dependency data that's maintained by Vinay), and I know there
> have been a number of utility scripts I've needed to write that I
> simply haven't been able to because doing so would involve a
> significant amount of extra work downloading and running package code.
>

> If there are dependencies that are only detectable at wheel build
> time, then so be it (I'm still looking for an example, but it's clear
> that the potential is there) but I'd like some way of getting at
> whatever dependency information a wheel (source or binary) provides
> via the PyPI JSON API - and I'd like an assurance that if dependency
> information *can* be determined statically, it will be.

* the ship has already sailed on a static declarative dependency model
(because 'if sys.platform:' in setup.py
* I agree that we should preserve all (dynamically determine at setup.py
runtime) requires edges as static JSON-LD

>
> Paul
> _______________________________________________
> Distutils-SIG maillist  -  Distutils-SIG at python.org
> https://mail.python.org/mailman/listinfo/distutils-sig
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