Index: lib/menubar/utils.lua
--- lib/menubar/utils.lua.orig
+++ lib/menubar/utils.lua
@@ -170,7 +170,7 @@ local function get_icon_lookup_path()
     local paths = add_with_dir({}, glib.get_home_dir(), '.icons')
     add_with_dir(paths, {
         glib.get_user_data_dir(),           -- $XDG_DATA_HOME, typically $HOME/.local/share
-        unpack(glib.get_system_data_dirs()) -- $XDG_DATA_DIRS, typically /usr/{,local/}share
+        unpack(glib.get_system_data_dirs()) -- $XDG_DATA_DIRS, typically ${LOCALBASE}/{,local/}share
     }, 'icons')
     add_with_dir(paths, glib.get_system_data_dirs(), 'pixmaps')