[Catalog-sig] PEP 438 implementation on testpypi

M.-A. Lemburg mal at egenix.com
Wed Mar 20 22:53:29 CET 2013

On 20.03.2013 22:02, holger krekel wrote:
> On Wed, Mar 20, 2013 at 21:27 +0100, M.-A. Lemburg wrote:
>> On 20.03.2013 21:16, Richard Jones wrote:
>>> On 20 March 2013 12:31, M.-A. Lemburg <mal at egenix.com> wrote:
>>>> * I'm missing an option:
>>>> [ ] Ask tools to scrape only the Download URL.
>>> This is not part of the planned implementation. The download_url was
>>> never well-specified, and only allows for one URL, hence the
>>> implementation we have.
>> I know it's not in PEP 438 at the moment, but was one of the
>> nits I mentioned to Holger last week. It's specified in the
>> meta-data format 1.1 as "A string containing the URL from
>> which this version of the package can be downloaded.":
>> http://www.python.org/dev/peps/pep-0314/
>> Having such an option would allow cleaning up the /simple/
>> index pages a lot, without any changes on the tools side.
>> It would also be needed for the my proposal of securing
>> external downloads, where you point to a hashed download
>> page with the download_url.
> I think it's better to just go for a tool which a maintainer can
> use to register external urls (with hashes) from crawling and scraping
> links once from an external page.  This way client installers worldwide
> do not need to visit and scrape that external page just to obtain
> release file links.  As you have mostly automated your release process
> do you foresee any issues with adding an automated step of registering
> externals and putting your package hosting mode to "pypi-explicit"?

I don't have a problem with adding support to our release
process (provided there's some stable way to access the
needed API).

I'm thinking about other package owners who have the
download_url already point to a page with the distribution
file(s) and don't have a release process they can easily

For them, it would be a nice possibility to speed up
installation of their packages.

Marc-Andre Lemburg

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