NixOs pre-installation steps for new VM

prepare-nix.sh

#!/bin/bash

set -e

# https://nixos.org/manual/nixos/stable/index.html#sec-installation

###############################################################
# JUST DON'T USE THIS. IT'S NOT FOR YOU.
###############################################################

disk="vda"

parted $disk -- mklabel gpt
parted $disk -- mkpart primary 512MB -8GB
parted $disk -- mkpart primary linux-swap -8GB 100%
parted $disk -- mkpart ESP fat32 1MB 512MB
parted $disk -- set 3 esp on

mkfs.ext4 -L nixos ${disk}1
mkswap -L swap ${disk}2
mkfs.fat -F 32 -n boot ${disk}3
mount /dev/disk/by-label/nixos /mnt
mkdir -p /mnt/boot
mount /dev/disk/by-label/boot /mnt/boot

nixos-generate-config --root /mnt

echo "Now edit /mnt/etc/nixos/configuration.nix to suit your needs"
echo "Docs https://nixos.org/manual/nixos/stable/index.html#sec-installation"
echo
echo "Once you have read the docs and are ready, run nixos-install"