bug#63198: cups-service-type uses PAM-enabled 'cups' by default which prevents authentication

[Maxim Cournoyer]

Hi,

Maxim Cournoyer <maxim.cournoyer@gmail.com> writes:

> Hi,
>
> Today I encountered an issue where after re-installing a Guix System, I
> couldn't add a new printer anymore.  Any CUPS client (including the
> trusty localhost:631 HTTP page) would loop on authenticating my user.
>
> After consulting the logs and finding this kind of line:
>
> pam_authenticate() returned 7 (Authentication failure)
>
> I started looking at our PAM configuration for CUPS, but we currently
> have none, which is probably the issue.  Using 'cups-minimal' instead of
> cups (which is built with linux-pam) solves the issue, as the 'cups'
> value provided to the <cups-configuration> record.

Fixed using the above strategy in 6bc3e3f ("services: cups: Use
cups-minimal to avoid PAM authentication.")

-- 
Thanks,
Maxim