Quack, Version 3.1 was released recently, it's working well (except migrations still not perfect), and I believe it's the right time to have a package ready (would have been too late for Stretch).
So, do you plan to continue your work? Btw I believe you should have a separate mailman3-hyperkitty package, as you may wish to run your archiver separately IIUC. Regards. -- Marc Dequènes (Duck)
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