[Distutils] Python version numbers and jython, IronPython, PyPy, and ShedSkin (was: setuptools on jython)

[Matt Good]

On Jan 22, 2008, at 8:35 AM, zooko wrote:
> If setuptools works on jython, what does it use for the "pyX.Y" part
> of the egg names?

I would assume/hope that it uses py2.2 since that's the Python  
version they're currently compatible with.

> Or will jython, IronPython, PyPy, and ShedSkin specify some X.Y
> version of CPython that they support?

Jython does already:
$ jython
Jython 2.2a0 on java1.5.0_13 (JIT: null)
 >>> import sys
 >>> sys.version_info
(2, 2, 0, 'alpha', 0)

They should use the CPython version numbers to indicate what version  
of the language specification they implement.

If they support compiled platform-specific extensions in eggs they  
could append an identifier like the CPython eggs do now for compiled  
extensions (e.g. Foo-1.1-py2.2-jython).

-- Matt