Re: Update PEP 508 to allow version specifiers
Tzu-ping Chung <[email protected]>
| Newsgroups | gmane.comp.python.distutils.devel |
|---|---|
| Message-ID | <[email protected]> |
> On 29 Jan 2019, at 23:19, Donald Stufft <[email protected]> wrote: > >> On Jan 29, 2019, at 10:15 AM, Xavier Fernandez <[email protected]> wrote: >> >> I agree that such specifier would make little sense but why add a new syntax "foo-1 @ url" when "foo==1 @ url" (where ==1 is a version specifier as defined in PEP 508) would perfectly fit the bill ? > > > Well foo-1 wouldn’t work great because you can’t disambiguate between (“foo”, “1”) and (“foo-1”, None). But the reason for using a different syntax would be so people didn’t confuse the concept with the idea of version specifiers, since >=1.0 doesn’t make sense, if we allow ==10, then people will assume they can add >=10.0 and willet confused when it doesn’t work. A different syntax side steps that issue. A >=10.0 specifier could still work, I think. Resolvers are implemented to calculate the union of specifiers, so any specifiers would do. Of course it does not make perfect sense, but I guess it could be interpreted as “you can find the package here, and I promise it satisfies the given specifiers. TP > -- > Distutils-SIG mailing list -- [email protected] > To unsubscribe send an email to [email protected] > https://mail.python.org/mailman3/lists/distutils-sig.python.org/ > Message archived at https://mail.python.org/archives/list/[email protected]/message/CTQH6ZR3FVCODND3NXQC34U6O4J6AVTM/ -- Distutils-SIG mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3/lists/distutils-sig.python.org/ Message archived at https://mail.python.org/archives/list/[email protected]/message/3LMJRZSRFC5ATDEDFZF7YM6J2PD77XTY/