For the sake of meeting license compliance only with SPDX files, the create-spdx.bbclass class should also support including information (and sources) of the build system and input layers. Filing this bug to track something that was discussed with Joshua and Richard today.
Bulk move from 4.99 or 0.00 to 5.99
There is information in this thread: https://lists.openembedded.org/g/openembedded-architecture/message/2377 It isn't entirely straightforward.