TODO:
    check nixos-generate-config

https://linux.die.net/man/1/virt-install
https://manpages.ubuntu.com/manpages/xenial/man1/virt-install.1.html

https://libvirt.org/formatdomain.html
https://libvirt.org/formatdomain.html#resource-partitioning

https://www.golinuxcloud.com/virt-install-examples-kvm-virt-commands-linux/

2021
https://www.technicalsourcery.net/posts/nixos-in-libvirt/
    /var/lib/libvirt/images/nixos.qcow2 vda

brctl show

virt-install -v \
  --name=nixos \
  --connect qemu:///system \
  --virt-type kvm \
  --memory=16392 \
  --vcpus=4 \
  --boot=uefi \
  --network bridge=virbr0,model=virtio \
  --graphics vnc \
  --console pty,target_type=virtio \
  --os-variant nixos-unstable \
  --cdrom ~/Downloads/dist/nixos-plasma5-23.05pre451105.06999209d7a-x86_64-linux.iso \
  --disk /var/lib/libvirt/images/nixos.qcow2,size=50,bus=virtio

# --nographics \
#,device=disk,bus=virtio,size=16
# --memory=8196 \

virsh
    net-list --all

http://server1.sharewiz.net/doku.php?id=kvm:list_os_variants
    sudo apt install libosinfo-bin
    osinfo-query os

virt-viewer --connect qemu:///system --wait nixos

efi
https://ostechnix.com/enable-uefi-support-for-kvm-virtual-machines-in-linux/
    "customize configuration before install"
    UEFI x86_64: /usr/share/OVMF/OVMF_CODE.fd
    loader=/usr/share/OVMF/OVMF_CODE.fd

https://docstore.mik.ua/manuals/hp-ux/en/5991-1247B/ch04s13.html
https://linuxhint.com/use-uefi-interactive-shell-and-its-common-commands/
    help m*
    map -r
        -r - for refresh
    fs1:
        ls
    ls/dir
    bfcfg
        boot dump -b
        boot mv 04 00
    cd
        EFI/BOOT
        exec ...
    edit
    exit
    reset -s

https://github.com/wstein/virt-install-nixos