Introspection data includes GSettingsBackend but gio/gio.h does not include gsettingsbackend.h
See title.
If API is provided via the introspection data it should presumably also be available when including the header that is given inside the introspection data. This is currently not the case, and gsettingsbackend.h goes one step further
#error "You must define G_SETTINGS_ENABLE_BACKEND before including <gio/gsettingsbackend.h>."
Should GSettingsBackend
be removed from the introspection data?