Thanks for explaining. This is confusing to me as a github user, i.e. if I saw a license in the project’s description, I wouldn’t expect another license in a subdirectory.
they must not look at anything other than the top directory, then, because this repo's sidebar only says "Apache-2.0 license" which I grant is clarified down at the _bottom_ of the README but if that multi-license thing really wants to be helpful it should at least look one subdirectory down
but, hydra itself is more than just the columnar extension.