$ apt rdepends libportmidi0
libportmidi0
Reverse Depends:
       OK: libportmidi-dev (= 1:217-6.1+b4)
  Depends: musescore-snapshot
     Done: mame
     Done: xjadeo
     Done: python3-pyo
  Suggests: python3-mido
     Done: python3-pygame
     Done: audacity
     Done: performous
  Depends: musescore3
  Depends: musescore
  Depends: mixxx
  Depends: hydrogen
  Depends: dsda-doom
  Depends: denemo
           --> build issue different from libportmidi
               see https://salsa.debian.org/debian/denemo
               Build time test suite fails
     Done: darktable
  Depends: libcsound64-6.0
     Done: butt

--> Proper transition via experimental