Include py.typed in wheel file

[FlorentJeannot]

Resolves #1610

I have tweaked the setup.cfg file in order to add the py.typed file in the wheel (it was already packaged in the zip file). I also added the classifier Typing :: Typed.

I am not sure if include_package_data = true can have any unwanted side effect. So far it looks like it only added the missing py.typed file to the wheel.
Now using options.package_data.

I tested the changes in the wheel using the following code:

import pprint
from pathlib import Path
from zipfile import ZipFile

path = Path("path_to_dot_whl")
names = ZipFile(path).namelist()
pprint.pprint(names)

Before:

['piptools/__init__.py',
 'piptools/__main__.py',
 'piptools/cache.py',
 'piptools/exceptions.py',
 'piptools/locations.py',
 'piptools/logging.py',
 'piptools/resolver.py',
 'piptools/subprocess_utils.py',
 'piptools/sync.py',
 'piptools/utils.py',
 'piptools/writer.py',
 'piptools/_compat/__init__.py',
 'piptools/_compat/click.py',
 'piptools/_compat/pip_compat.py',
 'piptools/repositories/__init__.py',
 'piptools/repositories/base.py',
 'piptools/repositories/local.py',
 'piptools/repositories/pypi.py',
 'piptools/scripts/__init__.py',
 'piptools/scripts/compile.py',
 'piptools/scripts/sync.py',
 'pip_tools-6.2.1.dev152+g1e05d00.d20220630.dist-info/LICENSE',
 'pip_tools-6.2.1.dev152+g1e05d00.d20220630.dist-info/METADATA',
 'pip_tools-6.2.1.dev152+g1e05d00.d20220630.dist-info/WHEEL',
 'pip_tools-6.2.1.dev152+g1e05d00.d20220630.dist-info/entry_points.txt',
 'pip_tools-6.2.1.dev152+g1e05d00.d20220630.dist-info/top_level.txt',
 'pip_tools-6.2.1.dev152+g1e05d00.d20220630.dist-info/RECORD']

After:

['piptools/__init__.py',
 'piptools/__main__.py',
 'piptools/cache.py',
 'piptools/exceptions.py',
 'piptools/locations.py',
 'piptools/logging.py',
 'piptools/py.typed',
 'piptools/resolver.py',
 'piptools/subprocess_utils.py',
 'piptools/sync.py',
 'piptools/utils.py',
 'piptools/writer.py',
 'piptools/_compat/__init__.py',
 'piptools/_compat/click.py',
 'piptools/_compat/pip_compat.py',
 'piptools/repositories/__init__.py',
 'piptools/repositories/base.py',
 'piptools/repositories/local.py',
 'piptools/repositories/pypi.py',
 'piptools/scripts/__init__.py',
 'piptools/scripts/compile.py',
 'piptools/scripts/sync.py',
 'pip_tools-6.2.1.dev152+g1e05d00.d20220630.dist-info/LICENSE',
 'pip_tools-6.2.1.dev152+g1e05d00.d20220630.dist-info/METADATA',
 'pip_tools-6.2.1.dev152+g1e05d00.d20220630.dist-info/WHEEL',
 'pip_tools-6.2.1.dev152+g1e05d00.d20220630.dist-info/entry_points.txt',
 'pip_tools-6.2.1.dev152+g1e05d00.d20220630.dist-info/top_level.txt',
 'pip_tools-6.2.1.dev152+g1e05d00.d20220630.dist-info/RECORD']

Contributor checklist

• Provided the tests for the changes.
• Assure PR title is short, clear, and good to be included in the user-oriented changelog

Maintainer checklist

• Assure one of these labels is present: backwards incompatible, feature, enhancement, deprecation, bug, dependency, docs or skip-changelog as they determine changelog listing.
• Assign the PR to an existing or new milestone for the target version (following Semantic Versioning).

[atugushev]

FYI I've canceled the CI jobs for this PR to get some air for the release build. Feel free to re-run after 6.8.0 release.

[atugushev]

Suggested change

	include_package_data = true
	package_data = piptools = py.typed

Mayby explicitly define certain package data?

[FlorentJeannot]

@atugushev Thanks! This line was not working but I found how to do it properly here. That's much better than include_package_data.

[AustinScola]

lgtm!

[atugushev]

LGTM 👍