--- /usr/portage/gnome-base/gnome-control-center/gnome-control-center-3.4.1.ebuild	2012-05-14 15:31:15.000000000 +0200
+++ gnome-control-center-3.4.1-r1.ebuild	2012-05-16 20:38:03.756273601 +0200
@@ -13,7 +13,7 @@
 
 LICENSE="GPL-2"
 SLOT="2"
-IUSE="+bluetooth +cheese +colord +cups +networkmanager +socialweb wacom"
+IUSE="+bluetooth +cheese +colord +cups +networkmanager +socialweb systemd wacom"
 KEYWORDS="~amd64 ~x86 ~x86-fbsd ~x86-freebsd ~amd64-linux ~x86-linux ~x86-solaris"
 
 # XXX: gnome-desktop-2.91.5 is needed for upstream commit c67f7efb
@@ -71,6 +71,7 @@
 	colord? ( >=gnome-extra/gnome-color-manager-3 )
 	cups? ( net-print/cups-pk-helper )
 	wacom? ( gnome-base/gnome-settings-daemon[wacom] )
+	systemd? ( >=sys-apps/systemd-44 )
 
 	!<gnome-base/gdm-2.91.94
 	!<gnome-extra/gnome-color-manager-3.1.2
@@ -102,6 +103,7 @@
 	G2CONF="${G2CONF}
 		--disable-update-mimedb
 		--disable-static
+		$(use_enable systemd)
 		$(use_enable bluetooth)
 		$(use_with cheese)
 		$(use_enable colord color)