pip not accepting locally installed dev version of dependency

[thony-murray]

Description

I am trying to install a package with a mymodule~=0.16 dependency.

Locally, I have mymodule-0.16.0.dev1234 installed.

When I run pip install, I get the following error: ERROR: No matching distribution found for mymodule~=0.16

Expected behavior

I expect a pre-installed dev version to be accepted in place of the regular version.

From PEP 440 (https://www.python.org/dev/peps/pep-0440/#handling-of-pre-releases):

Pre-releases of any kind, including developmental releases, are implicitly excluded from all version specifiers, unless they are already present on the system, explicitly requested by the user, or if the only available version that satisfies the version specifier is a pre-release.

pip version

21.3.1

Python version

3.8.12

OS

macOS Monterey version 12.1

How to Reproduce

Unfortunately the two modules in question are proprietary so you cannot reproduce with the exact modules. But in general the steps are

1. Install a X.Y.0.devZ version of a module.
2. Install a module with a ~=X.Y requirement.

Output

$ pip install mymodule
...
...
Successfully installed mymodule-0.16.0.dev1234

$ pip install othermodule
Processing /path/to/othermodule
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Installing backend dependencies ... done
  Preparing metadata (pyproject.toml) ... done
ERROR: Could not find a version that satisfies the requirement mymodule~=0.16 (from othermodule) (from versions: none)
ERROR: No matching distribution found for mymodule~=0.16

Code of Conduct

• I agree to follow the PSF Code of Conduct.

[jbylund]

Does it make a difference if you specify the --pre flag to pip install?

[thony-murray]

Does it make a difference if you specify the --pre flag to pip install?

No, same error with pip install --pre othermodule

[uranusjr]

This is a bug in packaging, can you open an issue there? https://github.com/pypa/packaging/issues?q=is%3Aissue+is%3Aopen+sort%3Aupdated-desc

[thony-murray]

This is a bug in packaging, can you open an issue there? https://github.com/pypa/packaging/issues?q=is%3Aissue+is%3Aopen+sort%3Aupdated-desc

Done pypa/packaging#505

[thony-murray]

It looks like the packaging issue is closed, although I've still run into this issue in pip. Has the fix from packaging made its way to pip yet?

[q0w]

Pip still vendors the old version of packaging

[pradyunsg]

Has the fix from packaging made its way to pip yet?

No. See #11715