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nixfiles/pkgs/nixfiles/nixfiles-auto-install.sh

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#!/usr/bin/env bash
set -euo pipefail
hostname=host${RANDOM}
echo "[I] Deploying with hostname ${hostname}"
device=""
for dev in "/dev/vda" "/dev/sda"; do
if [[ -b $dev ]]; then
device=$dev
break
fi
done
while [[ $# -gt 0 ]]; do
case $1 in
--hostname)
hostname=$2
shift
shift
;;
*)
echo "unknown option: $1"
exit 1
;;
esac
done
echo "[I] Formatting disk"
if [[ -z $device ]]; then
echo "[E] No device to install to"
exit 1
fi
echo "[I] Using ${device}"
parted --script $device mklabel gpt
parted --script $device disk_set pmbr_boot on
parted --script $device mkpart boot 0% 512M
parted --script $device set 1 bios_grub on
parted --script $device mkpart root 512M 100%
echo "[I] Creating file system"
mkfs.ext4 -F ${device}2
echo "[I] Mount file system"
mount ${device}2 /mnt
echo "[I] Generate NixOS configuration"
nixfiles-generate-config --root /mnt --hostname "${hostname}"
sed -i "s~# boot\.loader\.grub\.device = \"/dev/sda\";~boot\.loader\.grub\.device = \"${device}\";~g" "/mnt/etc/nixos/hosts/${hostname}/configuration.nix"
echo "[I] Install NixOS"
nixos-install --flake "/mnt/etc/nixos#${hostname}" --root /mnt --no-root-password