Luigi Salamone <lg.salamone@gmail.com> skribis:

> Hi!
>
> My Canon Pixma MG2950 works fine on Parabola, after configuring avahi with
> nss-mdns. But on Guix I can't find neither the printer nor the scanner.
> Tried with "system-config-printer" and via "lpinfo". What can I do? Here
> the salient lines of my /etc/config.scm:
>
> ...
> (use-package-modules cups scanner)
> ....
>
>  (packages (append (list (specification->package "cups")
>                          (specification->package "cups-filters")
>                          (specification->package "cups-filters")
>                          (specification->package "cups-pk-helper")
>                          (specification->package "foomatic-filters")
>                          (specification->package "ghostscript")
>                          (specification->package "sane-backends")
>                          (specification->package "simple-scan")
>                          (specification->package "nss-mdns")
>                          (specification->package "avahi")
> ....
> (services
>   (const* (service cups-service-type
>                     (cups-configuration
>                       (extensions
>                         (list cups-filters foomatic-filters hplip))
>                       (web-interface? #t)
>                       (default-paper-size "A4")))
>      (modify-services %desktop-services
>                         (sane-service-type _ =>
>                                            sane-backends)
>
> Thanks!
>
> Luigi

Hi,

Did you put '(name-service-switch %mdns-host-lookup-nss)' in your
'operating-system' definition to activate name resolution using mDNS?

There's a chapter about it in the manual:
https://guix.gnu.org/manual/en/html_node/Name-Service-Switch.html