#
# enable ssh for root
#

sudo bash
systemctl start sshd
passwd

#
# install script below
#

#
# kill old efi boot stuff
#

efibootmgr
efibootmgr -b 0 -B
efibootmgr -b 1 -B
efibootmgr -b 2 -B
efibootmgr -b 3 -B
efibootmgr -b 4 -B
efibootmgr

# host name to use
HOST=neko

# disks to use
DISK=/dev/disk/by-id/nvme-Seagate_FireCuda_530_ZP4000GM30013_7VS01VBM
DISK2=/dev/disk/by-id/nvme-CT2000P5PSSD8_213330E4ED05
DISK3=/dev/disk/by-id/nvme-Samsung_SSD_980_PRO_2TB_S69ENF0R846614L

# ensure 4k sector size
nvme format --lbaf=1 --force $DISK
nvme id-ns -H $DISK
sleep 5

# create partition table on all disks and EFI partition
for D in $DISK $DISK2 $DISK3; do
    # kill old data
    sgdisk --zap-all $D
    blkdiscard -v $D
    wipefs -a $D
    sleep 5

    # create partitions
    parted $D -- mklabel gpt
    sgdisk -n 1:0:+1024M -c 1:"EFI System Partition" -t 1:EF00 $D
    sgdisk -n 2:0:0 -c 2:"Linux" -t 2:8e00 $D
    parted $D -- set 1 boot on

    # boot partition
    mkfs.fat -F 32 -n EFIBOOT $D-part1
done

# take a look at the partitions
lsblk

# ZFS zpool creation with compression and encryption
zpool create \
    -o ashift=13 \
    -o autotrim=off \
    -O acltype=posixacl \
    -O atime=off \
    -O canmount=off \
    -O compression=on \
    -O dnodesize=auto \
    -O utf8only=on \
    -O normalization=formD \
    -O xattr=sa \
    -O mountpoint=none \
    -O encryption=on \
    -O keylocation=prompt \
    -O keyformat=passphrase \
    zpool $DISK-part2 $DISK2-part2 $DISK3-part2

sleep 5

# take a look at the partitions
lsblk

# show the pool
zpool status

sleep 5

# create all the volumes
zfs create -o mountpoint=legacy zpool/data
zfs create -o mountpoint=legacy zpool/nix
zfs create -o mountpoint=legacy zpool/root

sleep 5

# show the pool
zpool status

sleep 5

# create ZFS snapshot that we'll rollback to on boot
# see https://ryanseipp.com/post/nixos-encrypted-root/
zfs snapshot zpool/root@blank

sleep 5

# prepare install, root
mount -t zfs zpool/root /mnt

# Create directories to mount file systems on
mkdir -p /mnt/{data,nix,boot,root,etc/nixos}

# mount the ESP
mount $DISK-part1 /mnt/boot

# mount volumes
mount -t zfs zpool/data /mnt/data
mount -t zfs zpool/nix /mnt/nix

# bind mount persistent stuff to data
mkdir -p /mnt/data/{root,nixos/$HOST}
mount --bind /mnt/data/root /mnt/root
mount --bind /mnt/data/nixos/$HOST /mnt/etc/nixos

# create fake /data to have the right paths
mkdir -p /data
mount --bind /mnt/data /data

# take a look
mount

# configure
nixos-generate-config --root /mnt

# check /mnt/etc/nixos/hardware-configuration.nix /mnt/etc/nixos/configuration.nix

# copy config data from another machine including secrets

doas scp -r /data/nixos root@192.168.13.171:/mnt/data

# install

nixos-install --option experimental-features 'nix-command flakes' --no-root-passwd --root /mnt

# unmount all stuff and sync

umount -Rl /data /mnt
zpool export -a
sync

# shutdown once

shutdown now

# sync all /data after the install

doas rsync -va --delete --one-file-system /data/ root@192.168.13.171:/data/