When running mixer build delta-packs --previous-versions=N, packs will be generated for the previous N versions, as expected. But the delta list and delta creations for each previous version are processed independently, and in parallel, which often leads to unexpected bsdiff delta creation/application failures when delta lists overlap (i.e. contain duplicates if the lists were combined).
Instead, I think it would be better for mixer to (a) compute the delta list for the previous N versions (de-duplicated), (b) create all deltas from the delta list in parallel, and finally (c) create the delta packs.
When running
mixer build delta-packs --previous-versions=N, packs will be generated for the previousNversions, as expected. But the delta list and delta creations for each previous version are processed independently, and in parallel, which often leads to unexpected bsdiff delta creation/application failures when delta lists overlap (i.e. contain duplicates if the lists were combined).Instead, I think it would be better for mixer to (a) compute the delta list for the previous
Nversions (de-duplicated), (b) create all deltas from the delta list in parallel, and finally (c) create the delta packs.The entrypoint for this process is: https://github.com/clearlinux/mixer-tools/blob/8e8ba2d8e3d2eb8671c3c98a8f476266f616d4cf/builder/builder.go#L591