services: xorg: Deprecate 'screen-locker-service' procedure.

* doc/guix.texi (X Window): Replace 'screen-locker-service' with 'screen-locker-service-type'.
Document <screen-locker-configuration>.
* gnu/services/desktop.scm (desktop-services-for-system): Use screen-locker-service-type.
* gnu/services/xorg.scm: Export accessors for <screen-locker-configuration>.
(<screen-locker>): Rename to ...
(<screen-locker-configuration>): ... this.
(<screen-locker-configuration>)[empty?]: Rename to ...
(<screen-locker-configuration>)[allow-empty-password?]: ... this.
(screen-locker-pam-services): Update record name.
(screen-locker-setuid-programs): Update accessor name.
(screen-locker-service): Deprecate procedure.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

1 files changed, 6 insertions, 2 deletions

diff --git a/gnu/services/desktop.scm b/gnu/services/desktop.scm
index aa9f93997d..c0178135b0 100644
--- a/gnu/services/desktop.scm
+++ b/gnu/services/desktop.scm
@@ -1832,8 +1832,12 @@ applications needing access to be root.")
              (service sddm-service-type))
 
          ;; Screen lockers are a pretty useful thing and these are small.
-         (screen-locker-service slock)
-         (screen-locker-service xlockmore "xlock")
+         (service screen-locker-service-type
+                  (screen-locker-configuration
+                   "slock" (file-append slock "/bin/slock") #f))
+         (service screen-locker-service-type
+                  (screen-locker-configuration
+                   "xlock" (file-append xlockmore "/bin/xlock") #f))
 
          ;; Add udev rules for MTP devices so that non-root users can access
          ;; them.