Impossible to get arch Python native package compiled with via Wheel API

[Botan]

pkginfo 1.9.6
Debian 11
python 3.9
pip 23.0.1

I need to get architecture of a not yet installed native Python package.
I have only *.whl file for this package (arbitrary).
I can't find any way to get architecture from metadata.

Example (python-ldap choosen randomly, but it has native code):

Do:
python3 -m pip download --no-clean --no-deps --no-binary :all: -d . -i https://pypi.python.org/simple python-ldap
tar -zxf ./python-ldap-3.4.3.tar.gz -C .
cd python-ldap-3.4.3/
python3 -m pip wheel . --python python3 --wheel-dir ../fpm-wheel --no-input --disable-pip-version-check --no-python-version-warning --exists-action w --no-cache-dir --progress-bar off --no-deps --use-pep517 --check-build-dependencies

Then in python3 console:

from pkginfo import Wheel
wf = Wheel("python_ldap-3.4.3-cp39-cp39-linux_x86_64.whl")
for key in iter(wf):
   print(key, '=', getattr(wf, key))

You;ll get something like this:
>>> for key in iter(wf):
... print(key, '=', getattr(wf, key))
...
metadata_version = 2.1
name = python-ldap
version = 3.4.3
platforms = ()
supported_platforms = ()
summary = Python modules for implementing LDAP clients
description = python-ldap:
......
keywords = None
home_page = https://www.python-ldap.org/
author = python-ldap project
author_email = <email address hidden>
license = Python style
classifiers = [.......]
download_url = https://pypi.org/project/python-ldap/
requires = ()
provides = ()
obsoletes = ()
maintainer = None
maintainer_email = None
requires_python = >=3.6
requires_external = ()
requires_dist = ['pyasn1 (>=0.3.7)', 'pyasn1-modules (>=0.1.5)']
provides_dist = ()
obsoletes_dist = ()
project_urls = ()
provides_extras = ()
description_content_type = None

And there is no architecture...

Previously, on pre-project.toml era, it was possible to get required data via distutils with something like this:

self.distribution.has_ext_modules() or self.distribution.has_c_libraries()

(https://github.com/microsoft/botbuilder-python/blob/main/libraries/botframework-connector/azure_bdist_wheel.py#L151)

Now, when almost all popular packages use project.toml instead of setup.py, is it possible to get package architecture (or just to tell if it native or pure) by looking on it's *.whl file?

[Botan (amdei)]

BTW: required information IS available in result *.whl:

python_ldap-3.4.3.dist-info/WHEEL:

Wheel-Version: 1.0
Generator: bdist_wheel (0.40.0)
Root-Is-Purelib: false
Tag: cp39-cp39-linux_x86_64

Root-Is-Purelib: false is what is needed.
Is it possible to get it from code, not by eyeballing?

[Tres Seaver (tseaver)]

I can confirm this as a feature request. At present, 'pkginfo' exposes *nothing* from the 'WHEEL' file: is uses only the 'METADATA' file. I don't really have any obvious implementation in mind, though.