anchor.diff:      for so in $out/lib/pulse-${pulseaudio.version}/modules/*.so; do
         orig_rpath=$(patchelf --print-rpath "$so")
         patchelf \
  -        --set-rpath "${lib.getLib ffmpeg_4}/lib:$out/lib/pulse-${pulseaudio.version}/modules:$orig_rpath" \
  +        --set-rpath "${ldacbt}/lib:${lib.getLib ffmpeg_4}/lib:$out/lib/pulse-${pulseaudio.version}/modules:$orig_rpath" \
           "$so"
       done
     '';
  
positive.code:     ffmpeg_4
      fdk_aac
      libtool
      bluez
      dbus
      sbc
  
negative.code: , patchelf
  , fdk_aac
  , libtool
  , ldacbt
  , cmake
  , bluez
  , dbus
  