Device detach: libusb: error [darwin_claim_interface] USBInterfaceOpen: another process has device opened for exclusive access about gousb HOT 3 CLOSED

This is not the right forum for this question, since your problem doesn't seem to be caused by gousb. You can see that gousb correctly invokes libusb_detach_kernel_driver in your debug log, the rest depends on your system and software that you have running concurrently.

from gousb.

I understand that the gousb performs detach, but apparently, this is not enough or it does it not for what is needed. For me, the problem looks like - gousb detach does not work properly on the Darwin platform in some cases. And I think it makes sense to find out what these cases are and fix them. Unfortunately, I do not have such deep knowledge in this to get to the bottom of the error on my own. So I gave an example of the simplest script that consists exclusively of gousb functions. Here literally, there are no functions from other external libraries. And that doesn't work for Darwin, although such support is stated. I don't understand which forum should I go to with a script that consists exclusively of gousb functions?

from gousb.

I don't have an answer to your question. All I can say is that gousb seems to be behaving as intended.

from gousb.