How to access CLI parameters when running with xdist

Hello, so i've been using sys.argv to know wich environment the tests should run form the CLI and depending on the environment the data the tests use.

tests/data.py

def env():
if "--env=DEV" in sys.argv:
    return 'DEV'
elif "--env=UAT" in sys.argv:
    return 'UAT'
elif "--env=PROD" in sys.argv:
    return 'PROD'
elif "--env=TE" in sys.argv:
    return 'TE'
elif "--env=PERF" in sys.argv:
    return 'PERF'
else:
    return 'Incorrect environment'




if env() == 'UAT':
     policy_list_fnol_ap = ['30-60000550', '30-60000551', '30-60000555', '30-60000727', '30-60000798', '30-60000549']
     policy_list_fnol_auto = ['4-65000343', '44-45000075', '44-45000076', '4-65000344']
     policy_list_fnol_vida = ['23-54000022', '23-54000023', '17-55000042']
elif env() == 'DEV':
     policy_list_fnol_ap = ['30-60000301', '30-60000302', '30-60000303', '30-60000304', '30-60000305', '30-60000300']
     policy_list_fnol_auto = ['4-65000178', '44-45000030', '4-65000179', '44-45000031']
     policy_list_fnol_vida = ['23-54000020', '23-54000021', '17-55000018']

If i run this ussing "-n" parameter, sys.argv returns "-c" parameter so i can't get the environment from CLI with -n.
I was reading the documentation:

Accessing sys.argv from the master node in workers
To access the sys.argv passed to the command-line of the master node, use request.config.workerinput["mainargv"].

I'm not sure how to implement this. My problem is that this code isn't inside the tests or conftest.py, is just a data.py file that defines the data and then the data is used as paramteres:

policy_list = tests.data.policy_list_fnol_ap
@pytest.mark.parametrize('policy_number', policy_list)
def test_fnol_delete_draft:
    script....

Is there a way i can access the CLI parameters outside the tests? With sys.argv i'm able to do it, but sys.argv doesn't work with xdist since the response is "-c" and not the full CLI.

Thanks

Start with the documented “Accessing sys.argv from the master node in workers” guidance and the issue’s tests/data.py example. Determine how data.py can receive the original CLI environment when xdist is enabled, then verify that the selected environment produces the intended parametrized policy lists under a distributed test run.