Determine the correct device to install to

```sh
lsblk
```

Steps based on https://nixos.org/manual/nixos/stable/#sec-installation-manual-summary for UEFI

```sh
parted /dev/mmcblk0 -- mklabel gpt
# If there is an existing OS you will have to type yes to proceed
parted /dev/mmcblk0 -- mkpart root ext4 512MB -8GB
parted /dev/mmcblk0 -- mkpart swap linux-swap -8GB 100%
parted /dev/mmcblk0 -- mkpart ESP fat32 1MB 512MB
parted /dev/mmcblk0 -- set 3 esp on

mkfs.ext4 -L nixos /dev/mmcblk0p1

mkswap -L swap /dev/mmcblk0p2
swapon /dev/mmcblk0p2
mkfs.fat -F 32 -n boot /dev/mmcblk0p3
mount /dev/disk/by-label/nixos /mnt
mkdir -p /mnt/boot
mount -o umask=077 /dev/disk/by-label/boot /mnt/boot
nixos-generate-config --root /mnt
nano /mnt/etc/nixos/configuration.nix
# Set hostname networking.hostName = "jaglan-beta-mNN";
nixos-install
# Set the root password
reboot
nano /etc/nixos/configuration.nix
# Enable ssh access
# services.openssh.enable = true;
# services.openssh.settings.PermitRootLogin = "yes";
nixos-rebuild switch
```

If starting from older nixos, upgrade the OS

```sh
nix-channel --list
nix-channel --add https://channels.nixos.org/nixos-25.05 nixos
nix-channel --list
nixos-rebuild switch --upgrade
```