I have reproduced the problem with dssi-vst=0.8-2ubuntu1 (E: Couldn't find package dssi-vst) and have verified that the version of dssi-vst=0.8-2ubuntu2 in proposed fixes the issue.
Marking as verification-done
I have reproduced the problem with dssi-vst= 0.8-2ubuntu1 (E: Couldn't find package dssi-vst) and have verified that the version of 0.8-2ubuntu2 in proposed fixes the issue.
dssi-vst=
Marking as verification-done