[Distutils] [RFC] Recentering the static metadata need : PKG-INFO

[Tres Seaver]

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Tarek Ziadé wrote:
> Hey,
> 
> Marc-André Lemburg gave me a key points about the static metadata
> discussions we have (wether its PEP 390 or around it)
> 
> He said that the important thing was to have the context-dependant
> markers in PKG-INFO, and that having in described in
> setup.cfg or in setup.py by any way is not the important thing. And he
> is right !
> 
> So, PEP 390 proposes a new setup.cfg format, that's fine. And others
> are thinking about other ways to build metadata, that's great.
> 
> But what really matters at the end is to provide a new Metadata format
> where these marker are present, so any consumer
> can play with them (and Distutils provide an API to play with them :
> the DistributionMetadata class)
> 
> So please, have a look at the new section I've added here with the
> syntax I am proposing :
> 
> http://www.python.org/dev/peps/pep-0390/#impact-on-pkg-info-generation-and-pep-314
> 
> That will probably re-center the debate in creating a Metadata 1.2
> format that includes these markers.
> 
> As someone asked, here is the principal uses cases of having static
> metadata that includes markers like this:
> 
> - pip, or easy_install, or any client code, will be able to query
> PyPI, to get the metadata of a package. *and*
>   will be able to have it depending on a particular environment.
> 
> - it will be possible to generate and provide alongside the source
> code the PKG-INFO file, like how install_egg_info does
>   at installation time, exactly like how MANIFEST is built.
> 
> If that sounds like the right path (it does to me), we could start to
> work on a PEP 314 update, and add in the
> work what was started last year:
> 
> - revision of "requires", "obsoletes", etc..
> - link to PEP 386

Shouldn't this point at PEP 345, which already defines a metadata
version 1.2?


Tres.
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Tres Seaver          +1 540-429-0999          tseaver at palladion.com
Palladion Software   "Excellence by Design"    http://palladion.com
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