Allow setting django_settings_module from the DJANGO_SETTINGS_MODULE env variable

[armanckeser]

Hi there!

Hope everyone is doing alright! I have a use-case where I deploy my Django application with different INSTALLED_APPS in two different deployments. The least invasive way I found to do this was having two separate settings files and switching between them based on whichever one I am deploying. Things like pytest allow the setting of django_settings_module from both the environment and the pyproject.toml. It seems like django_stubs wants the settings to be static which doesn't really make sense to me considering Django has deemed it as an env variable for that flexibility.

Let me know if I am missing something, or if there is a workaround/fix that would be easier.

Thanks!

[sobolevn]

We can try this, PR is welcome.

[armanckeser]

@sobolevn Opened a PR