05/07: gnu: Add elogind service.

[Andy Wingo]

wingo pushed a commit to branch wip-pam-elogind
in repository guix.

commit a99bec2b16a99fb6635c2fe18265cbd3dd6cf7f3
Author: Andy Wingo <address@hidden>
Date:   Tue Aug 18 11:56:17 2015 +0200

    gnu: Add elogind service.
    
    * gnu/services/desktop.scm (elogind-service): New function.
      (%desktop-services): Add elogind-service.
---
 gnu/services/desktop.scm |   27 ++++++++++++++++++++++++++-
 1 files changed, 26 insertions(+), 1 deletions(-)

diff --git a/gnu/services/desktop.scm b/gnu/services/desktop.scm
index 4e4b49d..4973e82 100644
--- a/gnu/services/desktop.scm
+++ b/gnu/services/desktop.scm
@@ -26,6 +26,7 @@
   #:use-module (gnu system shadow)
   #:use-module (gnu packages glib)
   #:use-module (gnu packages admin)
+  #:use-module (gnu packages freedesktop)
   #:use-module (gnu packages gnome)
   #:use-module (gnu packages avahi)
   #:use-module (gnu packages wicd)
@@ -39,6 +40,7 @@
             geoclue-application
             %standard-geoclue-applications
             geoclue-service
+            elogind-service
             %desktop-services))
 
 ;;; Commentary:
@@ -374,6 +376,28 @@ site} for more information."
 
 
 ;;;
+;;; Elogind login and seat management service.
+;;;
+
+(define* (elogind-service #:key (elogind elogind))
+  "Return a service that runs the @command{elogind} login and seat management
+service.  The @command{elogind} service integrates with PAM to allow other
+system components to know the set of logged-in users as well as their session
+types (graphical, console, remote, etc.).  It can also clean up after users
+when they log out."
+  (with-monad %store-monad
+    (return
+     (service
+      (documentation "Run the elogind login and seat management service.")
+      (provision '(elogind))
+      (requirement '(dbus-system))
+
+      (start #~(make-forkexec-constructor
+                (list (string-append #$elogind "/libexec/elogind/elogind"))))
+      (stop #~(make-kill-destructor))))))
+
+
+;;;
 ;;; The default set of desktop services.
 ;;;
 (define %desktop-services
@@ -389,7 +413,8 @@ site} for more information."
          ;; time, so we currently add them to the set of default services.
          (colord-service)
          (geoclue-service)
-         (dbus-service (list avahi wicd upower colord geoclue))
+         (elogind-service)
+         (dbus-service (list avahi wicd upower colord geoclue elogind))
 
          (ntp-service)