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

[Tarek Ziadé]

On Tue, Nov 17, 2009 at 7:59 PM, Frank Wierzbicki <fwierzbicki at gmail.com> wrote:
> On Tue, Nov 17, 2009 at 8:51 AM, Tarek Ziadé <ziade.tarek at gmail.com> wrote:
>> Answering to Frank here too:
>>
>> We can suppose that a program that works with Jython, can safely use jython
>> versions in Requires-Python,
>>
>> unless it's possible for a given program to run on CPython *and* Jython
>> and that it's impossible to use a common MAJOR.MINOR version ?

> I think it will be very rare to find a program that works on both but
> only on different MAJOR.MINOR versions. It is *possible* - for
> example, we have an ast.py in Jython 2.5 even though CPython does not
> get this until 2.6 (ast.py as a replacement for pyc bytecode
> manipulation was just too compelling for us to ignore).
>

So do you think Requires-Python is good enough in general as it is
described now,
and that this case you mention can be handled by some code at install
time, raising an error in
case the conditions are not met ?


Tarek