After adding "deb http://mirror.whonix.de/whonixdevelopermetafiles/internal/ jessie main" to my apt sources and performing an apt-get update, I get the following error while trying to install the whonix-host-qemu-kvm package:
root@debian:/home/user# apt-get install whonix-host-additions whonix-host-qemu-kvm
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
whonix-host-qemu-kvm : Depends: whonix-host-shared but it is not installable
E: Unable to correct problems, you have held broken packages.
http://mirror.whonix.de/whonixdevelopermetafiles/internal/dists/jessie/main/binary-amd64/Packages lists no whonix-host-shared package (but a whonix-host-shared-dependencies package, maybe that was meant?)
My system accoring to uname -a (if that is relevant)
Linux debian 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt20-1+deb8u3 (2016-01-17) x86_64 GNU/Linux