re: Yubikey setup for GPG

[Jesse Gibbons]

I had a similar problem with my Librem key. I fixed it by including 
(service pcscd-service-type) in my system configuration, reconfiguring 
my guix system, and making sure I have one of the pinentry packages 
installed and configured.

See 
https://guix.gnu.org/manual/en/html_node/Miscellaneous-Services.html#index-pcscd