The Manifest files in this repository are using obsolete hashes RMD160 or WHIRLPOOL. Please update to newer Manifest hashes to avoid problems with newer package managers. For more information, see the tracker blocked by this bug.
I had two old Manifests in my repo which were using SHA256. I regenerated them; now they use BLAKE2B. If I understand correctly, that should fix the issue. Please let me know if my understanding is wrong.