How to use --config-setting to pass custom argument to setup.py when building

[LIONEFAN]

Before, I use this command to pass arguments to setup.py to modify the wheel name and version suffix flexibility when building wheels.
python setup.py bdist_wheel --project_name my_test_project --weekly_build

And my setyp.py use the following codes.

if '--project_name' in sys.argv:
     project_name_idx = sys.argv.index('--project_name')
     project_name = sys.argv[project_name_idx + 1]
     sys.argv.remove('--project_name')
     sys.argv.pop(project_name_idx)

if "--weekly_build" in sys.argv:
        VERSION = _VERSION + ".dev"
        sys.argv.remove("--weekly_build")
        project_name = project_name+"weekly"

It warning that avoid running setup.py directly. So I want to use the command python -m build .
I find it has a flag "--config-setting", and I use the command
python -m build -w -n -C="--build-option=--project_name" -C="--build-option=test_project" refers to this issue

But I don't know how to modify the codes in setup.py to receive the argument "project_name".
Can you help me to solve it?
And if you have a better idea to pass the arguments to setup.py when building, you can also tell me. Thanks!

[abravalheri]

Currently --config-setting does not connect in a direct manner with setup.py.
I suppose you can always use environment variables for that purpose.

[LIONEFAN]

Thanks your answer, I want to focus on the more standard and safe way to pass arguments. So which PR I should follow, Is this one?

[abravalheri]

So far I would say the safest way is via env vars. You can follow that issue tracker, however enabling --config-settings is not going to automatically mean that any arbitrary arg will be passed to setup.py. What is more likely to happen is that we are going to select a few options and exposed only them.