Add installation script

scripts/install.sh

@@ -0,0 +1,66 @@
+#!/bin/sh
+
+partition_disk() {
+    parted "$DISK" -- mklabel gpt
+    parted "$DISK" -- mkpart ESP fat32 1MiB 1025MiB
+    parted "$DISK" -- mkpart linux-swap 1025MiB 17409MiB
+    parted "$DISK" -- mkpart primary 17409MiB 100%
+    parted "$DISK" -- set 1 boot on
+    mkfs.fat -F32 -n BOOT "$DISK"p1
+    mkswap "$DISK"p2
+    swapon "$DISK"p2
+}
+
+zfs_setup() {
+    zpool import -f vault
+    zpool create -f -o ashift=12 -o autotrim=on -O acltype=posixacl -O relatime=on \
+        -O xattr=sa -O dnodesize=legacy -O normalization=formD -O mountpoint=none \
+        -O canmount=off -O devices=off -R /mnt -O compression=zstd "$POOL_NAME" "$DISK"p3
+    zfs create -o mountpoint=legacy -o com.sun:auto-snapshot=false "$POOL_NAME"/ephemeral
+    zfs create -o mountpoint=legacy -o com.sun:auto-snapshot=false "$POOL_NAME"/ephemeral/nix
+    zfs create -o mountpoint=legacy -o com.sun:auto-snapshot=false -o sync=disabled -o setuid=off "$POOL_NAME"/ephemeral/tmp
+    zfs create -o mountpoint=legacy -o com.sun:auto-snapshot=false "$POOL_NAME"/stateful
+    zfs create -o mountpoint=legacy -o com.sun:auto-snapshot=true "$POOL_NAME"/stateful/home
+    zfs create -o mountpoint=legacy -o com.sun:auto-snapshot=false "$POOL_NAME"/stateful/root
+}
+
+mount_datasets() {
+    mount -t zfs sysion/stateful/root /mnt
+    mkdir -p /mnt/boot
+    mount "$DISK"p1 /mnt/boot
+    mkdir -p /mnt/home/coolneng
+    mount -t zfs sysion/stateful/home /mnt/home/coolneng
+    mkdir -p /mnt/nix
+    mount -t zfs sysion/ephemeral/nix /mnt/nix
+    mkdir -p /mnt/tmp
+    mount -t zfs sysion/ephemeral/tmp /mnt/tmp
+}
+
+install_system() {
+    nixos-generate-config --root /mnt
+    mv /mnt/etc/nixos/hardware-configuration.nix modules/hardware-configuration.nix
+    nix-shell -p git --command "nixos-install --root /mnt --flake .#zion"
+}
+
+usage() {
+    echo "Usage: install.sh <disk>"
+    echo "disk: full path to the disk (e.g. /dev/sda)"
+    exit 1
+}
+
+if [ $# != 1 ]; then
+    usage
+fi
+
+DISK="$1"
+POOL_NAME="sysion"
+
+echo "Let's start by partitioning the disk"
+partition_disk
+echo "Starting up the ZFS machinery"
+zfs_setup
+echo "Mounting the horse"
+mount_datasets
+echo "Lift off to the NixOS planet"
+install_system
+echo "All ready, time to rejoice"