vim /etc/nixos/configuration.nix
  boot.supportedFilesystems = [ "zfs" ];

nixos-rebuild switch

gdisk /dev/sda
Create +16M bios boot, code ef02, set name bios
Create +500M boot, set name boot
Create +500M swap, code 8200, set name swap
Create reset of disk part, code a502, set name zfs

zpool create -o ashift=12 -o altroot=/mnt tank /dev/disk/by-partlabel/zfs

zfs create -o mountpoint=none tank/root
zfs create -o mountpoint=legacy tank/root/nixos
zfs create -o mountpoint=legacy tank/root/home
zfs set compression=lz4 tank

mount -t zfs tank/root/nixos /mnt
mkdir /mnt/home
mount -t zfs tank/root/home /mnt/home

mkfs.ext4 -m 0 -j -L boot /dev/disk/by-partlabel/boot
mkdir /mnt/boot
mount /dev/disk/by-partlabel/boot /mnt/boot

nixos-generate-config --root /mnt
vim /mnt/etc/nixos/configuration.nix
:read !hostid

  boot.loader.grub.device = "/dev/disk/by-partlabel/boot";
  boot.supportedFilesystems = [ "zfs" ];
  networking.hostId = "<the host id from the hostid command>";

nixos-install