On 29 Jan 2019, at 23:19, Donald Stufft <donald@stufft.io> wrote:
On Jan 29, 2019, at 10:15 AM, Xavier Fernandez <xav.fernandez@gmail.com> 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
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