Error when installing celery < 5.0.0

[rmajasol]

Description

Hi, found error making pip install celery==4.3.1 using latest pip 24.2 version

Traceback:

pip install celery==4.3.1
ERROR: Exception:
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 3367, in _dep_map
    return self.__dep_map
  File "/usr/local/lib/python3.8/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 3147, in __getattr__
    raise AttributeError(attr)
AttributeError: _DistInfoDistribution__dep_map

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.8/dist-packages/pip/_vendor/packaging/requirements.py", line 36, in __init__
    parsed = _parse_requirement(requirement_string)
  File "/usr/local/lib/python3.8/dist-packages/pip/_vendor/packaging/_parser.py", line 62, in parse_requirement
    return _parse_requirement(Tokenizer(source, rules=DEFAULT_RULES))
  File "/usr/local/lib/python3.8/dist-packages/pip/_vendor/packaging/_parser.py", line 80, in _parse_requirement
    url, specifier, marker = _parse_requirement_details(tokenizer)
  File "/usr/local/lib/python3.8/dist-packages/pip/_vendor/packaging/_parser.py", line 118, in _parse_requirement_details
    specifier = _parse_specifier(tokenizer)
  File "/usr/local/lib/python3.8/dist-packages/pip/_vendor/packaging/_parser.py", line 215, in _parse_specifier
    tokenizer.consume("WS")
  File "/usr/lib/python3.8/contextlib.py", line 120, in __exit__
    next(self.gen)
  File "/usr/local/lib/python3.8/dist-packages/pip/_vendor/packaging/_tokenizer.py", line 189, in enclosing_tokens
    self.raise_syntax_error(
  File "/usr/local/lib/python3.8/dist-packages/pip/_vendor/packaging/_tokenizer.py", line 167, in raise_syntax_error
    raise ParserSyntaxError(
pip._vendor.packaging._tokenizer.ParserSyntaxError: Expected matching RIGHT_PARENTHESIS for LEFT_PARENTHESIS, after version specifier
    pytz (>dev)
         ~^

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/local/lib/python3.8/dist-packages/pip/_internal/cli/base_command.py", line 105, in _run_wrapper
    status = _inner_run()
  File "/usr/local/lib/python3.8/dist-packages/pip/_internal/cli/base_command.py", line 96, in _inner_run
    return self.run(options, args)
  File "/usr/local/lib/python3.8/dist-packages/pip/_internal/cli/req_command.py", line 67, in wrapper
    return func(self, options, args)
  File "/usr/local/lib/python3.8/dist-packages/pip/_internal/commands/install.py", line 379, in run
    requirement_set = resolver.resolve(
  File "/usr/local/lib/python3.8/dist-packages/pip/_internal/resolution/resolvelib/resolver.py", line 95, in resolve
    result = self._result = resolver.resolve(
  File "/usr/local/lib/python3.8/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 546, in resolve
    state = resolution.resolve(requirements, max_rounds=max_rounds)
  File "/usr/local/lib/python3.8/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 427, in resolve
    failure_causes = self._attempt_to_pin_criterion(name)
  File "/usr/local/lib/python3.8/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 239, in _attempt_to_pin_criterion
    criteria = self._get_updated_criteria(candidate)
  File "/usr/local/lib/python3.8/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 229, in _get_updated_criteria
    for requirement in self._p.get_dependencies(candidate=candidate):
  File "/usr/local/lib/python3.8/dist-packages/pip/_internal/resolution/resolvelib/provider.py", line 247, in get_dependencies
    return [r for r in candidate.iter_dependencies(with_requires) if r is not None]
  File "/usr/local/lib/python3.8/dist-packages/pip/_internal/resolution/resolvelib/provider.py", line 247, in <listcomp>
    return [r for r in candidate.iter_dependencies(with_requires) if r is not None]
  File "/usr/local/lib/python3.8/dist-packages/pip/_internal/resolution/resolvelib/candidates.py", line 401, in iter_dependencies
    for r in self.dist.iter_dependencies():
  File "/usr/local/lib/python3.8/dist-packages/pip/_internal/metadata/pkg_resources.py", line 247, in iter_dependencies
    return self._dist.requires(extras)
  File "/usr/local/lib/python3.8/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 3070, in requires
    dm = self._dep_map
  File "/usr/local/lib/python3.8/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 3369, in _dep_map
    self.__dep_map = self._compute_dependencies()
  File "/usr/local/lib/python3.8/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 3379, in _compute_dependencies
    reqs.extend(parse_requirements(req))
  File "/usr/local/lib/python3.8/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 3434, in __init__
    super().__init__(requirement_string)
  File "/usr/local/lib/python3.8/dist-packages/pip/_vendor/packaging/requirements.py", line 38, in __init__
    raise InvalidRequirement(str(e)) from e
pip._vendor.packaging.requirements.InvalidRequirement: Expected matching RIGHT_PARENTHESIS for LEFT_PARENTHESIS, after version specifier
    pytz (>dev)
         ~^

It works ok with pip 24.0

Thanks!

Expected behavior

No response

pip version

24.2

Python version

3.8

OS

ubuntu:20.04 (docker image)

How to Reproduce

when upgrading pip to latest version:

pip install --upgrade pip

and installing celery dep either via requirements.txt

pip install -r /requirements.txt

or installing dep itself:

pip install celery==4.3.1

Output

No response

Code of Conduct

• I agree to follow the PSF Code of Conduct.

[notatallshaw]

I think the error is supposed to be more informative, I will take a look to see if it can be improved, but the issue is since pip 24.1 requirements which do not conform to the spec are not accepted any more, you can read more about the reasoning here: https://pradyunsg.me/blog/2024/05/13/pip-24-1-betas/

That older version of celery uses an invalid requirement and can't be installed with pip 24.1 or newer. You must install a version of pip less than 21, e.g python -m pip install "pip<21" to be able to install older versions of celery.

[edmorley]

See also #12950.

[uranusjr]

I’ll close this; basically the same but #12950 is more descriptive.