Packages slv2-jack , libslv2-dev and libjpeg62-turbo do not seem to be downloadable anymore via the apt repository.
While trying to build the project for Debian/Ubuntu using the build doc, some of the Linux build dependencies do not seem to have an installable candidate.
Screenshot
Desktop
Linux ip-10-0-0-52 5.16.11-76051611-generic #202202230823164624826120.04~2b22243-Ubuntu SMP PREEMPT Thu Ma x86_64 x86_64 x86_64 GNU/Linux