In pip, "--use-feature truststore" in requirements.txt does not seem to work

[JCapul]

Hi, In my org, we have our own PyPI server with self-signed certs. I have managed to use truststore successfully through pip on both Windows and Ubuntu through the command line option --use-feature truststore, like this :

pip install --extra-index-url https://[address-of-our-pypiserver] --use-feature truststore [some_package]

However, when I try the exact same thing using a requirements file like this:

requirements.txt

--extra-index-url https://[address-of-our-pypiserver]
--use-feature truststore

[some_package]

and: pip install -r requirements.txt

It does not work, and I get the unable to get local issuer certificate error.

pip seems to recognizes the feature because otherwise it raises an error when I type an unknown feature by pip.

I am not sure whether all this is a pip issue or a trustore issue, so I am posting this here.

Thanks a lot for your help !

Extra info: python version: 3.10 pip version: 23.2.1 truststore version: 0.8.0 Windows 10, Ubuntu 20.04

[sethmlarson]

Thanks for opening this issue. Unfortunately, this isn't an issue in Truststore (and maybe not in pip either). Pip doesn't allow specifying arbitrary options in a requirements.txt file and --use-feature seems to not be one of such options. Instead you'd have to run pip like so:

python -m pip install --use-feature=truststore -r requirements.txt

without --use-feature in requirements.txt. Closing this issue since there's nothing the Truststore project can do for this.

[JCapul]

Thanks @sethmlarson for taking the time to answer. It looks like though that pip does allow the use of --use-feature in requirements file according to their doc: https://pip.pypa.io/en/stable/reference/requirements-file-format/#supported-options

I tested other features and it worked, but not truststore. But I guess it must be a pip issue.