Re: distutils.util.get_host_platform() and AIX

Michael <[email protected]> Wed, 14 Aug 2019 19:06:34 +0200
Newsgroups	gmane.comp.python.distutils.devel
Message-ID	<[email protected]>
On 14/08/2019 15:09, Nick Coghlan wrote:
>> I am guessing - that would be a PR for CPython - to get that into distutils.
> Not really, since the platform tag generation needs to work on older
> Python versions.
OK.
> Instead, you'll want to define a new algorithm for deriving the
> platform tag on AIX that can be referenced from
> https://packaging.python.org/specifications/platform-compatibility-tags/
>
> You shouldn't have the same challenges that manylinux did when it
> comes to determining a suitable build environment, though - IBM are
> already doing that work for AIX, just as MS do it for Windows, and
> Apple do it for Mac OS X.

I am probably missing something that is right in front of me.

By "new algorithm" for generating a platform tag - I thought that would
have been a PR to update the *.get_platform(). What should go into that
seems fairly straight-forward to me. And it would/should reflect the
"build environment" provided by IBM_AIX.

But when I read
https://packaging.python.org/specifications/platform-compatibility-tags/
I have the impression I am tasked with generating a new "tag", e.g.,
manyaix.

I do not think a new pseudo-tag is needed - if the tag is generated
properly. The danger comes from, e.g., a Python 3 executable built on
AIX 7.1 and someone builds a module on AIX 7.2. Chances are (read I
would expect) the module would not work on AIX 7.1. This is two
different moments in time, lets assume two different 'packagers'.

I can play around on my own - learning curve - using the tag as it is
for now. I suspect that noone "AIX oriented" is using either eggs or
wheels. They may be trying the format RPM (I tried with cffi and that
format failed to complete) but others succeed. Just no wheels.

And, is it a bug? if I use ./setup.py bdist -b aix-SOMETHING because in
the dist directory the filenames are all using aix-6.1 where the
platform tag is expected. All I see is that the directory aix-SOMETHING
exists, and there is a message that aix-SOMETHING/dumb is removed.

Regards,

Michael

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