We now use a single-stage installer, so we can no longer hook into ... * We now use a single-stage installer, so we can no longer hook into base-config. Add a udeb instead which provides instructions on what to do after the first boot, and add an oem-config-prepare program which should be run by the OEM once they have completed any necessary modifications. Note that this means that the system is no longer prepared for the end-user until oem-config-prepare is manually run (closes: Malone #28095).