Raising this as an issue since it prevent any useful usage of dh-virtualenv.
dh-virtualenv pacakge is available in Debian buster and bullsyeye, but is not available in Debian Bookworm.
https://packages.debian.org/source/bullseye/dh-virtualenv
Seams to be related to this bug:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1017046