Proxy settings not forwarded to subprocess

[motaatmo]

Description

I'm behind a corporate firewall with a http proxy. Starting pip with the --proxy and --trusted-host flags usually works, but it failed when trying to install PyQt5. Verbose logs showed that some connections could not be initiated, it said that a subprocess failed. Hoping that the subprocess might be pip itself I created a global pip.ini file with exactly the same settings I used on the command line, and it worked. Therefore, the proxy settings somehow got lost within pip.

Expected behavior

No response

pip version

24.3.1

Python version

3,13

OS

Windows

How to Reproduce

Try to install PyQt5 behind a proxy

Output

No response

Code of Conduct

• I agree to follow the PSF Code of Conduct.

[notatallshaw]

Thanks for reporting, this is a known issue, see: #6018

As pip is a volunteer project it requires someone to create a PR and maintainers to olunteer time to review and accept. In this case someone only recently created a PR: #13075