Fix find_pyproject_toml type hint

[schmir]

The function is being called with a tuple of strings.

[ichard26]

Thanks for the PR! Please don't mind the failing primer workflows, that is due a different change in an unrelated project. I might've made those changes in bandersnatch pypa/bandersnatch#561 ... whoops :)

[cooperlees]

Pushed the black format fix to stop bandersnatch being evil to our CI: pypa/bandersnatch@0ad7b49

[cooperlees]

Makes sense to me - Thanks for the find. I think str is an iterable, thus no error. This is much clearer tho imo.

[schmir]

Makes sense to me - Thanks for the find. I think str is an iterable, thus no error. This is much clearer tho imo.

I'm not sure why mypy doesn't catch that error, it's pretty much obvious if you look at how it's being called:

value = find_pyproject_toml(ctx.params.get("src", ()))

Maybe you should run mypy with more strict settings.