Amnesaic NixOS installer script using tmpfs

partition-tmpfs.sh

#!/usr/bin/env bash

set -xeuo pipefail

DISK=/dev/nvme0n1


parted $DISK -- mklabel gpt
parted $DISK -- mkpart ESP fat32 1MB 512MB
parted $DISK -- set 1 esp on
parted $DISK -- mkpart primary linux-swap 512MB 8GB
parted $DISK -- mkpart primary 8GB 100%

cryptsetup --verify-passphrase -v luksFormat "$DISK"p3
cryptsetup open "$DISK"p3 enc

mkfs.fat -F 32 -n boot "$DISK"p1
mkswap -L swap "$DISK"p2
swapon "$DISK"p2
mkfs.ext4 -L nixos /dev/mapper/enc

mount -t tmpfs none /mnt
mkdir -p /mnt/{boot,nix,etc/nixos,var/log,home/igor}
mount -t tmpfs none /mnt/home/igor
mount /dev/disk/by-label/boot /mnt/boot
mount /dev/disk/by-label/nixos /mnt/nix
mkdir -p /mnt/nix/persist/{etc/nixos,var/log}
mount -o bind /mnt/nix/persist/etc/nixos /mnt/etc/nixos
mount -o bind /mnt/nix/persist/var/log /mnt/var/log

nixos-generate-config --root /mnt