@Daniel with additional reflection, I assume one could proceed in the sequence outlined below. It aims to balance Debian Team Ruby's focus to revise its packages prior to the freeze of `bookworm`, with some progress for `ruby-mdl`.
* With the source-only upload in preparation, `ruby-mdl` could advance into `testing` on condition I edit entry `maintainer` (for the Debian package), at least for now replace `Debian Ruby Team` by me. Then, the package no longer is frozen in `unstable` where -- as by today -- it is for 12 days. * The rename of the package,[1] maybe with the split into a binary and a libary you suggested, then is postponed for a package `0.12.0-3` (likely) for the time *after* February. Objections by anyone? Regards, Norwid [1] https://wiki.debian.org/RenamingPackages, Transition package method

