Hi I have a problem with the CUPS service.
I put the script
(service cups-service-type
(cups-configuration
(web-interface? #t)
(extensions
(list cups-filters hplip))))
and I have put in the 'use-service-module cups' and 'use-package-module cups'
I upgrade my GuixSD with sudo -E guix system reconfigure /etc/config
but it's same.