services: wicd: Add Wicd to the system profile.

* gnu/services/networking.scm (wicd-service-type): Extend
  PROFILE-SERVICE-TYPE.
  (wicd-service): Mention it in docstring.
* doc/guix.texi (Networking Services): Update documentation
  accordingly.
* gnu/system/examples/desktop.tmpl (packages): Remove WICD.

doc/guix.texi

@@ -6447,9 +6447,15 @@ gateway.
 @end deffn
 
 @cindex wicd
+@cindex network management
 @deffn {Scheme Procedure} wicd-service [#:wicd @var{wicd}]
-Return a service that runs @url{https://launchpad.net/wicd,Wicd}, a
-network manager that aims to simplify wired and wireless networking.
+Return a service that runs @url{https://launchpad.net/wicd,Wicd}, a network
+management daemon that aims to simplify wired and wireless networking.
+
+This service adds the @var{wicd} package to the global profile, providing
+several commands to interact with the daemon and configure networking:
+@command{wicd-client}, a graphical user interface, and the @command{wicd-cli}
+and @command{wicd-curses} user interfaces.
 @end deffn
 
 @deffn {Scheme Procedure} ntp-service [#:ntp @var{ntp}] @

gnu/services/networking.scm

@@ -483,11 +483,19 @@ configuration file."
                        (service-extension dbus-root-service-type
                                           list)
                        (service-extension activation-service-type
-                                          (const %wicd-activation))))))
+                                          (const %wicd-activation))
+
+                       ;; Add Wicd to the global profile.
+                       (service-extension profile-service-type list)))))
 
 (define* (wicd-service #:key (wicd wicd))
   "Return a service that runs @url{https://launchpad.net/wicd,Wicd}, a network
-manager that aims to simplify wired and wireless networking."
+management daemon that aims to simplify wired and wireless networking.
+
+This service adds the @var{wicd} package to the global profile, providing
+several commands to interact with the daemon and configure networking:
+@command{wicd-client}, a graphical user interface, and the @command{wicd-cli}
+and @command{wicd-curses} user interfaces."
   (service wicd-service-type wicd))
 
 ;;; networking.scm ends here

gnu/system/examples/desktop.tmpl

@@ -3,7 +3,7 @@
 
 (use-modules (gnu) (gnu system nss))
 (use-service-modules desktop)
-(use-package-modules xfce ratpoison wicd avahi xorg certs)
+(use-package-modules xfce ratpoison avahi xorg certs)
 
 (operating-system
   (host-name "antelope")
@@ -40,7 +40,7 @@
   ;; Add Xfce and Ratpoison; that allows us to choose
   ;; sessions using either of these at the log-in screen.
   (packages (cons* xfce ratpoison    ;desktop environments
-                   xterm wicd avahi  ;useful tools
+                   xterm avahi       ;useful tools
                    nss-certs         ;for HTTPS access
                    %base-packages))