nixos_ext4_setup.sh

#!/usr/bin/env bash

# Hacky script hacked together from the NixOS wiki, because NixOS doesn't actually sort out partitionting apparently.

set -euo pipefail

###############
# Setup partitions
parted /dev/sda -- mklabel gpt

SWAP_SIZE="$(grep MemTotal < /proc/meminfo | awk '{printf("%d\n"), $2/ (1024*1024)}')"

parted /dev/sda -- mkpart ESP fat32 1MiB 512MiB
parted /dev/sda -- set 1 esp on

parted /dev/sda -- mkpart primary 512MiB -"$SWAP_SIZE"GiB

parted /dev/sda -- mkpart primary linux-swap -"$SWAP_SIZE"GiB 100%

#################
# format partitions

mkfs.fat -F 32 -n boot /dev/sda1
mkfs.ext4 -L nixos /dev/sda2
mkswap -L swap /dev/sda3

######################
# setup mmounts
# Mount the target file system on which NixOS should be installed on /mnt, e.g.

mount /dev/disk/by-label/nixos /mnt

mkdir -p /mnt/boot
mount /dev/disk/by-label/boot /mnt/boot

swapon /dev/sda3

nixos-generate-config --root /mnt

#TODO: automunge configuration.nix

#############################
# finish install 

# nixos-install