This version and later tries to clone sioclient repository during the build.

External downloads are not allowed during the build process under any
circumstances and the build system does not allow external web access
for this reason.

I can see nothing about this extra new dependency in the release notes, nor
can I see this packaged anywhere else.

Is this 'really' required or is it optional?

If it is required then I will probably have to package it.

Any thoughts?

Cheers,
Barry
(freedv, codec2, lpcnetfreedv and hamlib package maintainer for Mageia)