On Sat, Oct 3, 2015 at 10:50 AM, Donald Stufft <don...@stufft.io> wrote: > On October 2, 2015 at 10:27:36 PM, Nathaniel Smith (n...@pobox.com) wrote: >> >> So I'm extremely reluctant to give up on standardizing how to handle >> VCS checkouts. And if we're going to have a standard for that, then >> would sure be nice if we could share the work between this standard >> and the one for sdists, given how similar they are. > > Mentioned in another email, but I don't think we should give up on the VCS > handling, I just think we should defer it to another PEP. I think this PEP is > suffering from trying to use the same mechanism for VCS and sdists when they > are different things and have different considerations. The Python packaging > toolchain has a long history of suffering because it tried to reuse the same > thing across multiple "phases" of the packaging life cycle. The problem with > that is different phases have different needs, and when you're trying to use > the same thing across multiple you suffer from something that is a sort of > "Jack of All Trades, Master of None" kind of thing.
I guess to make progress in this conversation I need some more detailed explanations. I totally get that there's a long history of thought and conversations behind the various assertions here like "a sdist is fundamentally different from a VCS checkout", "there must be a 1-1 mapping between sdists and wheels", "pip needs sdists that have full wheel metadata in static form", and I'm barging in from the outside with no context, but I literally have no idea why the specific design features you're asking for are desirable or even viable. Right now if I were to try and write the PEP you're asking for, then the rationale section would just be "because Donald said so" over and over :-). I couldn't write the motivation section, because I don't know any problems that the PEP you're describing would fix for me as a package author (which doesn't mean they don't exist, but!). -n
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