From mboxrd@z Thu Jan  1 00:00:00 1970
From: Danny Milosavljevic <dannym@scratchpost.org>
Subject: bug#23286: Unable to unlock xscreensaver in Xfce
Date: Sat, 23 Apr 2016 09:55:09 +0200
Message-ID: <20160423095509.46afe0e7@scratchpost.org>
References: <570EB72F.9060101@fripost.org>
 <87lh4gm8x3.fsf@gnu.org>
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To: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Cc: Albin <albin@fripost.org>, 23286@debbugs.gnu.org

On Thu, 14 Apr 2016 18:50:32 +0200
ludo@gnu.org (Ludovic Court=C3=A8s) wrote:
> As Chris Webber mentioned on the mailing list (IIRC), you=E2=80=99ll also=
 have
> to enable xscreensaver in the OS config:
>=20
>   (use-modules (gnu services xorg))
>=20
>   (operating-system
>     ;; =E2=80=A6
>     (services (cons (screen-locker-service "xscreensaver")
>                     %desktop-services)))

guix system: error: failed to load '/etc/config.scm':
gnu/services/xorg.scm:442:41: In procedure screen-locker-service:
gnu/services/xorg.scm:442:41: In procedure struct_vtable: Wrong type argume=
nt in position 1 (expecting struct): "xscreensaver"

To fix, use

   (use-modules (gnu services xorg))
   (use-package-modules .... xdisorg)

   (operating-system
     ;; =E2=80=A6
     (services (cons (screen-locker-service xscreensaver)
                     %desktop-services)))

(i.e. without the doublequotes)