$ apt -t bookworm-backports install qemu-system -s
NOTE: This is only a simulation!
apt needs root privileges for real execution.
Keep also in mind that locking is deactivated,
so don't depend on the relevance to the real current situation!
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following additional packages will be installed:
ipxe-qemu libcacard0 libcapstone4 libdaxctl1 libexecs0 libfdt1 libgfapi0 libgfrpc0 libgfxdr0 libglusterfs0 libiscsi7 libndctl6 libpmem1 librados2 librbd1 libslirp0 libspice-server1 libssh-4 liburing2
libusbredirparser1 libvdeplug2 libvirglrenderer1 qemu-block-extra qemu-system-arm qemu-system-common qemu-system-data qemu-system-gui qemu-system-mips qemu-system-misc qemu-system-modules-opengl
qemu-system-modules-spice qemu-system-ppc qemu-system-sparc qemu-system-x86 qemu-utils seabios
Suggested packages:
samba vde2
The following NEW packages will be installed:
ipxe-qemu libcacard0 libcapstone4 libdaxctl1 libexecs0 libfdt1 libgfapi0 libgfrpc0 libgfxdr0 libglusterfs0 libiscsi7 libndctl6 libpmem1 librados2 librbd1 libslirp0 libspice-server1 libssh-4 liburing2
libusbredirparser1 libvdeplug2 libvirglrenderer1 qemu-block-extra qemu-system qemu-system-arm qemu-system-common qemu-system-data qemu-system-gui qemu-system-mips qemu-system-misc qemu-system-modules-opengl
qemu-system-modules-spice qemu-system-ppc qemu-system-sparc qemu-system-x86 qemu-utils seabios
0 upgraded, 37 newly installed, 0 to remove and 205 not upgraded.
Inst ipxe-qemu (1.0.0+git-20190125.36a4c85-5.1 Debian:12.2/stable [all])
Inst libcacard0 (1:2.8.0-3 Debian:12.2/stable [amd64])
Inst libcapstone4 (4.0.2-5 Debian:12.2/stable [amd64])
Inst libdaxctl1 (76.1-1 Debian:12.2/stable [amd64])
Inst libexecs0 (1.3-2 Debian:12.2/stable [amd64])
Inst libfdt1 (1.6.1-4+b1 Debian:12.2/stable [amd64])
...