sudo parted /dev/nvme0n1 -- mklabel gpt
sudo parted /dev/nvme0n1 -- mkpart primary ext4 512MB 100%
sudo parted /dev/nvme0n1 -- mkpart ESP fat32 1MB 512MB
sudo parted /dev/nvme0n1 -- set 2 esp on
sleep 2
sudo mkfs.btrfs -f /dev/disk/by-partlabel/primary

sudo mount -o rw /dev/disk/by-partlabel/primary /mnt/
sudo mkdir /mnt/boot
sudo mkfs.vfat /dev/disk/by-partlabel/ESP
sudo mount -o rw /dev/disk/by-partlabel/ESP /mnt/boot/
sudo mkdir /mnt/root
sudo git clone https://git.deepnet.com/jsutter/nixos /mnt/root/nixos

Then:

sudo -i
cd /mnt/root/nixos
nixos-install --flake .#<name> --no-root-password --impure

Finally:

nixos-enter --root '/mnt'
passwd jsutter