Re-enable systemd managed kwin

This was blocked on environment variables issues which are now resolved

CMakeLists.txt

@@ -455,8 +455,5 @@ configure_package_config_file(KWinDBusInterfaceConfig.cmake.in
 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/KWinDBusInterfaceConfig.cmake
     DESTINATION ${CMAKECONFIG_INSTALL_DIR})
 
-
+ecm_install_configured_files(INPUT plasma-kwin_x11.service.in plasma-kwin_wayland.service.in @ONLY
-# plasma-kwin_wayland.service.in is currently disabled as plasma-workspace currently launches
-# kwin-wayland explicitly. Porting this is currently blocked on propogating DISPLAY
-ecm_install_configured_files(INPUT plasma-kwin_x11.service.in @ONLY
             DESTINATION ${SYSTEMD_USER_UNIT_INSTALL_DIR})

plasma-kwin_wayland.service.in

@@ -3,6 +3,6 @@ Description=KDE Window Manager
 PartOf=graphical-session.target
 
 [Service]
-ExecStart=@CMAKE_INSTALL_FULL_BINDIR@/kwin_wayland
+ExecStart=@CMAKE_INSTALL_FULL_BINDIR@/kwin_wayland_wrapper --xwayland
-BusName=org.kde.KWin
+BusName=org.kde.KWinWrapper
 Slice=session.slice