Trying `guix import pypi -r gruut` I get:

Starting download of /tmp/guix-file.hITnlA
 From https://files.pythonhosted.org/packages/74/67/3008e4f0b97d9a5701c8ef3bf95f1941c5b0a620c8f88f32e849117f8dc0/num2words-0.5.12.tar.gz...
In procedure connect: Network is unreachable

But doing `guix import pypi -r num2words` works fine.