Hello,These unsatisfiable build-dependencies are temporary and will be solved by properly sequenced binNMUs or sourceful uploads that I am currently dealing with.
I do not see the value of such bug reports. Packages with unsatisfiable build-dependencies do not migrate to testing nor are picked up by buildd daemons (so no actual FTBFS). They add burden and look like noise to me.
Cheers, -- Stéphane