gdm: add the gdm system user be part of the video group, to make gdm/shell happy.

srcpkgs/gdm/INSTALL

@@ -10,5 +10,10 @@ post)
 	[ ! -d var/cache/gdm ] && mkdir -p var/cache/gdm
 	chown gdm:gdm var/lib/gdm > /dev/null
 	chown -R gdm:gdm var/lib/gdm/.gconf.mandatory
+	# Check that gdm user also is in the video group.
+	if groups gdm|grep -vq video; then
+		usermod -a -G video gdm
+		echo "Added gdm user to the system video group."
+	fi
 	;;
 esac

srcpkgs/gdm/template

@@ -1,6 +1,7 @@
 # Template file for 'gdm'
 pkgname=gdm
 version=3.2.0
+revision=1
 distfiles="${GNOME_SITE}/$pkgname/3.2/$pkgname-$version.tar.xz"
 build_style=gnu_configure
 configure_args="--disable-schemas-install --disable-scrollkeeper
@@ -43,6 +44,7 @@ gtk_iconcache_dirs="/usr/share/icons/hicolor"
 # Create the 'gdm' system user/group.
 system_accounts="gdm"
 gdm_homedir="/var/lib/gdm"
+gdm_groups="video"
 openrc_services="gdm default true"
 
 Add_dependency run glibc