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d.o packaging has improved pretty dramatically since these projects were merged into hostmaster. I can only assume that there's some Git magic to preserve the history of these components, and make back-porting fixes from 6.x-2.x to 6.x-1.x not too painful.
This is required in order for custom Profiler sub-profiles to work, which I've been able to confirm works based on the recent patches I've submitted. If we don't implement Profiler, it would still be *much* easier to maintain a fork of hostmaster, if it didn't bundle in all the rest of the front-end.