[issue22980] C extension naming doesn't take bitness into account

[Marc-Andre Lemburg]

Marc-Andre Lemburg added the comment:

On 17.04.2015 00:51, Donald Stufft wrote:
> 
>> Since you need special support for such ZIP files (either using dlopen
>> hacks or temporarily extracting them), you might as well deal with
>> the platform dependencies in that handler. No need to force the
>> platform tags on all your .so file for no apparent reason.
> 
> There are other reasons as have already been mentioned, this is just yet
> another reason (and on it's own I'd agree it's not a sufficiently compelling
> use case), but when I see a pattern of things which all need the same thing
> then that speaks to me that it should live someplace centrally instead of
> having each one reimplement it. 

Sure, but whatever the central implementation is going to be,
it doesn't necessarily have to require sticking platform ABI flags
on all .so files, even those which will never need to be installed
side-by-side. The more paths you need to stat when searching
a shared mod, the slower Python will get.

There's a very simple trick which some packages used in the
past for sumo distributions - you simply modify the __path__
attribute of the package to point to the platform dependent
files in the __init__.py file and Python will then automagically
use the right C extensions.

To simplify this, the platform triplets and other platform ABI flags
could be made available via the sys or sysconfig module for importers
and other tools to pick up.

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<http://bugs.python.org/issue22980>
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