KVM/libvirt: Using virtio disk driver in Debian installer

I try to install Debian in a KVM-based VM using the virtio disk driver/bus and virt-install to run the installer.

However, it seems that the installer lacks the virtio driver. Once I switch to bus=ide, the installation succeeds and afterwards, I can change back to virtio.

Is there any way to let the installer recognize the disk so that I don't have to modify the VM after the installation?