[BUG] setuptools/_distutils/_vendor/packaging-24.0.dist-info/METADATA missing from sdist

[hroncok]

setuptools version

74.0.0

Python version

all

OS

all

Additional environment information

No response

Description

When I download the sdist from PyPI, unpack it and run pip freeze over the vendored directories to extract the vendored versions (as the vendored.txt files are gone starting with #4457) like this:

$ pip freeze --path setuptools/_vendor
$ pip freeze --path setuptools/_distutils/_vendor

I get:

$ pip freeze --path setuptools/_vendor 
autocommand==2.2.2
backports.tarfile==1.2.0
importlib_metadata==8.0.0
importlib_resources==6.4.0
inflect==7.3.1
jaraco.context==5.3.0
jaraco.functools==4.0.1
jaraco.text==3.12.1
more-itertools==10.3.0
packaging==24.1
platformdirs==4.2.2
tomli==2.0.1
typeguard==4.3.0
typing_extensions==4.12.2
wheel==0.43.0
zipp==3.19.2

$ pip freeze --path setuptools/_distutils/_vendor
WARNING: Skipping setuptools/_distutils/_vendor/packaging-24.0.dist-info due to invalid metadata entry 'name'

Namely, this doesn't work because setuptools/_distutils/_vendor/packaging-24.0.dist-info is incomplete:

$ tree setuptools/_distutils/_vendor/packaging-24.0.dist-info
setuptools/_distutils/_vendor/packaging-24.0.dist-info
├── LICENSE
├── LICENSE.APACHE
└── LICENSE.BSD

1 directory, 3 files

While in git:

$ tree setuptools/_distutils/_vendor/packaging-24.0.dist-info
setuptools/_distutils/_vendor/packaging-24.0.dist-info
├── INSTALLER
├── LICENSE
├── LICENSE.APACHE
├── LICENSE.BSD
├── METADATA
├── RECORD
├── REQUESTED
└── WHEEL

1 directory, 8 files

Please include setuptools/_distutils/_vendor/packaging-24.0.dist-info/METADATA in sdist or restore the vendored.txt files.

Thank you.

Expected behavior

$ pip freeze --path setuptools/_vendor 
autocommand==2.2.2
backports.tarfile==1.2.0
importlib_metadata==8.0.0
importlib_resources==6.4.0
inflect==7.3.1
jaraco.context==5.3.0
jaraco.functools==4.0.1
jaraco.text==3.12.1
more-itertools==10.3.0
packaging==24.1
platformdirs==4.2.2
tomli==2.0.1
typeguard==4.3.0
typing_extensions==4.12.2
wheel==0.43.0
zipp==3.19.2

$ pip freeze --path setuptools/_distutils/_vendor
packaging==24.0

How to Reproduce

see above

Output

see above

[hroncok]

Fix in #4623