Hi Vagrant,

Thank you for the ping on this issue.

It was on my radar to update nncp as the package was failed to build for
a long time and quite dated.

It looks like the current version is not compatible with versions of
golang packages available in Guix anymore. I have a chance to bump it to
the 8.0.0 to check if it may fix the build but it did not work any more and
the whole package need proper refactoring.

I'll place upgrading it to my TODO list.

Thanks,
Oleg