Re: Deleting services from %desktop-services in operating system declaration

[swedebugia]

On 2016-01-21 00:24, address@hidden wrote:
> address@hidden skribis:
>
> > I have trouble getting the syntax right to delete avahi and wicd from
> > my config.scm.
>
> The correct syntax would be:
>
>   (operating-system
>     ;; …
>     (services (remove (lambda (service)
>                         (or (eq? (service-kind service)
>                                  wicd-service-type)
>                             (eq? (service-kind service)
>                                  avahi-service-type)))
>                       %desktop-services)))

I tried this and got this error:
# guix system reconfigure /etc/config/config.scm
guix system: error: failed to load '/etc/config/config.scm':
/etc/config/config.scm:48:12: In procedure #<procedure a7c3530 ()>:
/etc/config/config.scm:48:12: In procedure module-lookup: Unbound 
variable: remove

Config here: https://paste.debian.net/367385/

> As David notes, ‘%desktop-services’ is a list of service objects.  To
> remove elements from a list, the right procedure is ‘remove’ (info
> "(guile) SRFI-1 Filtering and Partitioning").

Thanks for the tip!

> > The manual does not yet have examples of how to delete one or more
> > entries from the %base-services or other lists.
>
> I’ve added this example in commit 5d94ac5.

:)

cheers
sdb