[24.1] Install from requirements.txt no longer works when using quotes

[felix-bedag]

Description

Our requirements.txt file containes the following line:

connectorx>="0.3.2a8"

With pip 24.0 the command pip install -r path/to/requirements.txt was successful. With the version 24.1 however, we get the following error message:

ERROR: Invalid requirement: 'connectorx>="0.3.2a8"': Expected end or semicolon (after name and no valid version specifier)
connectorx>="0.3.2a8"
               ^ (from line 6 of /path/to/requirements.txt)

---

Removing the quotes fixed the issue.

Expected behavior

Installation succeeds even if package version name contains quotes.

pip version

24.1

Python version

3.10.12

OS

Ubuntu

How to Reproduce

Execute the following commands:

1. pip install --force-reinstall -v "pip==24.1"
2. echo 'connectorx>="0.3.2a8"' > requirements.txt
3. pip install --force-reinstall -r requirements.txt

Now the error occurs.

Output

ERROR: Invalid requirement: 'connectorx>="0.3.2a8"': Expected end or semicolon (after name and no valid version specifier)
    connectorx>="0.3.2a8"
              ^ (from line 1 of requirements.txt)

Code of Conduct

• [X] I agree to follow the PSF Code of Conduct.

[uranusjr]

Quotes were never a thing; its “support” never inteded. Remove them.

[ichard26]

To follow up on this, pip 24.1 has removed support for legacy version and legacy version specifiers. Starting with pip 24.1, they all must conform to PEP 440. See https://pradyunsg.me/blog/2024/05/13/pip-24-1-betas/ for more information.

You should've received a deprecation warning at some point, at least with pip 24.0.