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Re: How to watch pypi.org

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On 2020-10-31 19:48:29 +0500 (+0500), Andrey Rahmatullin wrote:
> On Sat, Oct 31, 2020 at 12:03:50PM +0100, Thomas Goirand wrote:
> > Pypi is often thought as a Python module source repository. It
> > is *NOT*. It is a repository for binaries to be consumed by pip.
> 
> Oooh, that's a very interesting thought I never considered.

It's not entirely accurate, however. These days there are two
remaining package formats commonly distributed through PyPI: sdists
and wheels. The sdist format is intended to be a
platform-independent "source distribution" (hence its name), perhaps
more analogous to Debian's own source package formats, and the
traditional setup.py in many sdists is akin to debian/rules and the
$PACKAGE.egg-info/ tree similar to other sorts of metadata you would
expect under the debian/ directory. Python package installation
tools like pip call libraries to do things like compile and link
included C extensions from the unpacked sdist before installing the
results into a usable location in the system (or more recently,
putting the results into a wheel package, then caching that and
installing its contents into the system).

When it comes to "binaries" this is definitely the domain of wheels.
A wheel is (usually, with the exception of toolchains like flit)
built from an sdist and may be platform-dependent, especially if it
contains compiled extensions. The wheel is much more akin to
Debian's binary package format.

The main operating system distribution package maintainer argument
against relying on sdists is that they may omit files from the
upstream revision control system which that upstream did not want
included in their official source distributions, or may include
extra generated files which upstream did want included but don't
exist (or at least don't exist as files in that form) within the
upstream revision control. This is perhaps not entirely dissimilar
from C/autotools based projects having a `make dist` target which
they use to prepare their source distribution tarballs. Whether it
actually represents a problem for downstream packaging likely varies
a bit from project to project.
-- 
Jeremy Stanley

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Thread

How to watch pypi.org Fioddor Superconcentrado <fioddor@gmail.com> - 2020-10-04 17:30 +0200
  Re: How to watch pypi.org Geert Stappers <stappers@stappers.nl> - 2020-10-04 17:50 +0200
    Re: How to watch pypi.org Fioddor Superconcentrado <fioddor@gmail.com> - 2020-10-30 15:10 +0100
  Re: How to watch pypi.org Andrey Rahmatullin <wrar@debian.org> - 2020-10-04 17:50 +0200
    Re: How to watch pypi.org Fioddor Superconcentrado <fioddor@gmail.com> - 2020-10-30 15:10 +0100
  Re: How to watch pypi.org Paul Wise <pabs@debian.org> - 2020-10-05 04:30 +0200
    Re: How to watch pypi.org Scott Kitterman <debian@kitterman.com> - 2020-10-05 05:10 +0200
      Re: How to watch pypi.org, example Geert Stappers <stappers@stappers.nl> - 2020-10-05 08:20 +0200
    Re: How to watch pypi.org Fioddor Superconcentrado <fioddor@gmail.com> - 2020-10-30 15:20 +0100
      Re: How to watch pypi.org Andrey Rahmatullin <wrar@debian.org> - 2020-10-30 15:30 +0100
      Re: How to watch pypi.org Paul Wise <pabs@debian.org> - 2020-10-31 02:40 +0100
        Re: How to watch pypi.org Jeremy Stanley <fungi@yuggoth.org> - 2020-10-31 03:40 +0100
          Re: How to watch pypi.org Paul Wise <pabs@debian.org> - 2020-10-31 05:30 +0100
      Re: How to watch pypi.org Thomas Goirand <zigo@debian.org> - 2020-10-31 12:10 +0100
        Re: How to watch pypi.org Jeremy Stanley <fungi@yuggoth.org> - 2020-10-31 13:20 +0100
          Re: How to watch pypi.org Thomas Goirand <zigo@debian.org> - 2020-11-01 20:30 +0100
            Re: How to watch pypi.org Jeremy Stanley <fungi@yuggoth.org> - 2020-11-01 21:10 +0100
        Re: How to watch pypi.org Andrey Rahmatullin <wrar@debian.org> - 2020-10-31 15:50 +0100
          Re: How to watch pypi.org Jeremy Stanley <fungi@yuggoth.org> - 2020-10-31 18:40 +0100

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