I have used the instructions
here to install sonobus on a Raspberry Pi based system. It creates the directory `/usr/lib/lv2/SonoBus.lv2` but it is empty. This means that the sonobus LV2 plugin is not available and it causes issues with lilv which complains about the missing manifest.ttl.
The deb should either install the LV2 or not. (I would hope for the former.)
Any clues?