[Distutils] PEP 345 update + RFC on "Requires-External" and "Requires-Python"

[M.-A. Lemburg]

Chris Withers wrote:
> Tarek Ziadé wrote:
>> Last, "Requires-Python" is introduced to define the version of Python.
>> I am not sure this is required anymore since Martin has added a Trove
>> classifier
>> for this. 
> 
> I don't think Trove classifiers have anything to do with this.
> Otherwise, we could move *all* the requirements stuff into trove
> classification which buys us nothing more than having to maintain a huge
> list of trove classifiers.
> 
> I like the idea of Requires-Python, but only because I don't see why
> Python can't just be specified in the equivalent of setuptools'
> install_requires and its ilk.
> 
> Why can't python just be treated as another package on while a package
> my have a particular version dependency?

Perhaps because a package manager cannot go and resolve that
dependency by installing another Python version for you ? ;-)

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