[Distutils] Upcoming changes to PEP 426/440

Donald Stufft donald at stufft.io
Thu Jul 4 14:37:04 CEST 2013

On Jul 4, 2013, at 8:31 AM, Vinay Sajip <vinay_sajip at yahoo.co.uk> wrote:

> Donald Stufft <donald <at> stufft.io> writes:
>> I would prefer a single entry. It makes the serialization format map to the
>> modeling simpler, and I think it's simpler for humans too. I don't see much
>> benefit to making it a list except arbitrarily adding another level of
>> nesting.
> It's a question of
> {
>  "install": ["a", "b", "c"]
> }
> versus
> {
>  "install": "a"
> },
> {
>  "install": "b"
> },
> {
>  "install": "c"
> }
> and I can't see why you think the latter is in any way better. IMO
> implementation details (such as "it's easier for the Django ORM to map it")
> should not take precedence over other considerations of
> readability/simplicity. In any case, I can't see why there would be any
> particular modelling problem with the scheme I've suggested.

It's not that it's easier for the Django ORM to map it, it's just a simpler structure
all together. It goes from a single relation to what's essentially a M2M with
extra data on the intermediate table. I think it's better because there's less
moving parts and this is designed for machines. Human readability is a
nice to have but not hardly a requirement.

Simpler, not impossible vs impossible ;)

> Is the modelling work you're doing public? I had a quick look at your
> warehouse repo (github.com/dstufft/warehouse) and I don't see any models
> beyond User and Email. Is that the correct location? I'd be happy to take a
> closer look to get a better understanding of what modelling problem you're
> seeing/foreseeing.

And yea it's in that repo. Still in a branch though as I haven't finished it.

> FYI the metadata that I'm maintaining on red-dove.com is stored in a SQL
> database. While my SQL schema is not yet fully aligned with the PEP (as it's
> WIP), I don't see any modelling problem between an RDBMS backend and any of
> the JSON formats which have been published in the various revisions of the
> PEP. Some more detail would help :-)
> Regards,
> Vinay Sajip
> _______________________________________________
> Distutils-SIG maillist  -  Distutils-SIG at python.org
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Donald Stufft
PGP: 0x6E3CBCE93372DCFA // 7C6B 7C5D 5E2B 6356 A926 F04F 6E3C BCE9 3372 DCFA

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