[Python-ideas] module version number support for semver.org

[Ryan Hiebert]

On Tue, Apr 15, 2014 at 3:26 PM, Terry Reedy <tjreedy at udel.edu> wrote:

> On 4/15/2014 3:25 PM, Andrew Barnert wrote:
>
>>
>>  If my project relies on 2.3.4+ but not 3.x of your project,
>> and your 2.3.7 breaks backward compatibility, that's a bug in your
>> project.
>>
>
> Agreed. But it means that one cannot use the simplistic algorithm given on
> the web page: usable = '2.3.4' <= version < '3.0.0'.
>
> You can if the author releases a 2.3.8 that un-breaks backward
compatibility. In general, the packaging tools should install the latest
version that meets all the requirements, so as long as no dependencies
require the exact broken one to be used, it'll work. Of course, you _could_
still add that extra guard, it just isn't needed because pip will take care
of it for you. Denouncement might also still be useful, but in the same
vein, probably not needed.
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