Failure to Install Celery 4.4.2 Due to Version Parsing Error in Metadata

[iamnotagentleman]

I Encounter a problem when i tried to install celery package with uv

• The Command

uv --verbose pip install celery==4.4.2

RESULT

uv::requirements::from_source source=celery==4.4.2
0.002499s DEBUG uv_interpreter::virtual_env Found a virtualenv through VIRTUAL_ENV at: /Users/velieroglu/PycharmProjects///app/venv2
0.003561s DEBUG uv_interpreter::interpreter Using cached markers for: /Users/velieroglu/PycharmProjects///app/venv2/bin/python
0.003568s DEBUG uv::commands::pip_install Using Python 3.8.10 environment at /Users/velieroglu/PycharmProjects///app/venv2/bin/python
uv_client::flat_index::from_entries
uv_resolver::resolver::solve
0.418619s 0ms DEBUG uv_resolver::resolver Solving with target Python version 3.8.10
uv_resolver::resolver::choose_version package=root
uv_resolver::resolver::get_dependencies package=root, version=0a0.dev0
0.419496s 0ms DEBUG uv_resolver::resolver Adding direct dependency: celery==4.4.2
uv_resolver::resolver::choose_version package=celery
uv_resolver::resolver::package_wait package_name=celery
uv_resolver::resolver::process_request request=Versions celery
uv_client::registry_client::simple_api package=celery
uv_client::cached_client::get_cacheable
uv_client::cached_client::read_and_parse_cache file=/Users/velieroglu/Library/Caches/uv/simple-v1/pypi/celery.rkyv
uv_resolver::resolver::process_request request=Prefetch celery ==4.4.2
0.422276s 1ms DEBUG uv_client::cached_client Found fresh response for: https://pypi.org/simple/celery/
uv_resolver::version_map::from_metadata
uv_distribution::distribution_database::get_or_build_wheel_metadata dist=celery==4.4.2
uv_client::registry_client::wheel_metadata built_dist=celery==4.4.2
uv_client::cached_client::get_serde
uv_client::cached_client::get_cacheable
uv_client::cached_client::read_and_parse_cache file=/Users/velieroglu/Library/Caches/uv/wheels-v0/pypi/celery/celery-4.4.2-py2.py3-none-any.msgpack
0.423612s 3ms DEBUG uv_resolver::resolver Searching for a compatible version of celery (==4.4.2)
0.423633s 3ms DEBUG uv_resolver::resolver Selecting: celery==4.4.2 (celery-4.4.2-py2.py3-none-any.whl)
uv_resolver::resolver::get_dependencies package=celery, version=4.4.2
uv_resolver::resolver::distributions_wait package_id=celery-4.4.2
0.423674s 0ms WARN uv_client::cached_client Broken cache entry at /Users/velieroglu/Library/Caches/uv/wheels-v0/pypi/celery/celery-4.4.2-py2.py3-none-any.msgpack, removing: failed to open file /Users/velieroglu/Library/Caches/uv/wheels-v0/pypi/celery/celery-4.4.2-py2.py3-none-any.msgpack
0.423814s 0ms DEBUG uv_client::cached_client No cache entry for: https://files.pythonhosted.org/packages/7e/54/4d87a8f589259456efb09f574d538fcf3fd7339a3daaae8e02320c1780f1/celery-4.4.2-py2.py3-none-any.whl
uv_client::cached_client::fresh_request url="https://files.pythonhosted.org/packages/7e/54/4d87a8f589259456efb09f574d538fcf3fd7339a3daaae8e02320c1780f1/celery-4.4.2-py2.py3-none-any.whl"
uv_client::cached_client::new_cache file=/Users/velieroglu/Library/Caches/uv/wheels-v0/pypi/celery/celery-4.4.2-py2.py3-none-any.msgpack
uv_client::registry_client::read_metadata_range_request wheel=celery-4.4.2-py2.py3-none-any.whl
error: Failed to download: celery==4.4.2
Caused by: Couldn't parse metadata of celery-4.4.2-py2.py3-none-any.whl from https://files.pythonhosted.org/packages/7e/54/4d87a8f589259456efb09f574d538fcf3fd7339a3daaae8e02320c1780f1/celery-4.4.2-py2.py3-none-any.whl
Caused by: expected version to start with a number, but no leading ASCII digits were found
pytz (>dev)
^^^^

This issue seems to stem from the handling of version tags that do not begin with numeric characters, such as pre-release versions or special tags like (dev, latest, etc.) which is contrary to the observed behavior where versions are expected to start with digits.

[zanieb]

This is wild syntax for the version specifier. They're looking for >0.0.0dev? I believe this is not conformant with the spec, but we could add support in our lenient parser. cc @BurntSushi

[charliermarsh]

The version specifier is just dev?

[zanieb]

See it for yourself :) https://github.com/celery/celery/blob/4.4.2/requirements/default.txt#L1

[charliermarsh]

I'll do you one worse, I download and unzip the wheel locally.

[AlexWaygood]

It seems like pip is about to disallow this, so we may not want to allow it ourselves. While pip does install celery currently, it prints this deprecation warning:

DEPRECATION: celery 4.1.1.801473 has a non-standard dependency specifier pytz>dev. pip 24.0 will enforce this behaviour change. A possible replacement is to upgrade to a newer version of celery or contact the author to suggest that they release a version with a conforming dependency specifiers. Discussion can be found at pypa/pip#12063