http://c25o7knygjm3m67jy27yuynvv4pkfi25naucscmh4ubq2ggiig3v57ad.onion/en/how-to-fix-the-issue-with-ca-certificates-in-guix.html
If you are using the Guix System, nss-certs is included in the initial
configuration template as well as in the documentation, so as long as you do
not purposefully delete it, this issue should not happen. However, if you use
Guix as a package manager on another distribution, you have to install it
yourself. There is no /etc/ssl/certs directory Just like NixOS, Guix does not follow the FHS .