Add session restore service

KSmserver was split up so this could be invoked at the end of the
session startup. This adds the relevant unit to invoke it.

ksmserver/CMakeLists.txt

@@ -73,3 +73,4 @@ install(FILES ${CMAKE_CURRENT_BINARY_DIR}/KSMServerDBusInterfaceConfig.cmake
 install( FILES org.kde.KSMServerInterface.xml DESTINATION ${KDE_INSTALL_DBUSINTERFACEDIR})
 
 ecm_install_configured_files(INPUT plasma-ksmserver.service.in DESTINATION ${SYSTEMD_USER_UNIT_INSTALL_DIR})
+ecm_install_configured_files(INPUT plasma-restoresession.service.in DESTINATION ${SYSTEMD_USER_UNIT_INSTALL_DIR})

ksmserver/plasma-restoresession.service.in

+[Unit]
+Description=KDE Session Management Server
+After=plasma-ksmserver.service plasma-xembedsniproxy.service plasma-gmenudbusmenuproxy.service
+
+[Service]
+Type=oneshot
+ExecStart=-@QtBinariesDir@/qdbus org.kde.ksmserver /KSMServer org.kde.KSMServerInterface.restoreSession
+Slice=session.slice
+RefuseManualStart=yes

startkde/systemd/plasma-workspace@.target

@@ -2,5 +2,5 @@
 Description=KDE Plasma Workspace
 Requires=plasma-core@%i.target plasma-ksplash-ready.service
 BindsTo=graphical-session.target
-Wants=xdg-desktop-autostart.target plasma-xembedsniproxy.service plasma-gmenudbusmenuproxy.service
+Wants=xdg-desktop-autostart.target plasma-xembedsniproxy.service plasma-gmenudbusmenuproxy.service plasma-restoresession.service
 After=plasma-core.target