Hello! On behalf of upstream, This is caused by introducing cbor2 6.1.x with breaking changes in cbor2 5.x -> 6.1.x. See more here: https://falcon.readthedocs.io/changes/4.3.1.html
On an unrelated note, the built python3-falcon package should NOT directly depend on any of the following: python3-cbor2, python3-jsonschema, python3-mimeparse, python3-msgpack, python3-rapidjson. >From this list, only python3-jsonschema & python3-msgpack are referenced by the framework as optional components, although even they would fit Suggests: better than Recommends: (if I read the Debian Policy correctly). See also: https://falcon.readthedocs.io/community/packaging.html#metadata-and-dependencies Kindly Vytas
