Hi, is it possible to figure out the source root for a given python module, if you have list of source roots and modules?

That's exactly what dependency inference does.

Do you have the module as a filesystem path or as a dotted import string?

The latter.

And you're doing this in a plugin? Then yeah take a look at dep inference implementation, which maps modules to source paths, and then it's easy to map source paths to their source roots.