on StackExchange I opened a question "stable package is different to rmadison query" on https://unix.stackexchange.com/question … ison-query

One respond was if Devuan has its own metadata service?
" [ ... ] if Devuan has an appropriate metadata service (Madison), you can tell rmadison to use that with the -u option; [ ... ]"

Does Devuan has its own metadata service (Madison)?