90 lines
2.8 KiB
Bash
Executable file
90 lines
2.8 KiB
Bash
Executable file
#!/usr/bin/env bash
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# Script to setup a drive for a brand new NixOS installation.
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# IMPORTANT: Before running this script, you'll need to create a LUKS partition using:
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# cryptsetup --label=nixos-crypt --type=luks2 luksFormat [partition]
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set -e
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if [ "$(id -u)" != "0" ]; then
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echo "This script must be run as root" 1>&2
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exit 1
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fi
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# Configuration parameters
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ask_root_password=false # Whether to prompt for a root user password
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boot_partition="" # The drive to install the bootloader to
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luks_partition="" # The drive partition to create the LUKS container on
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root_partition="/dev/mapper/nixos-crypt" # The partition to install NixOS to
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function usage() {
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echo "Usage: format-drives.sh [--boot boot-partition-path] [--luks luks-partition-path] [--ask-root-password]"
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echo "Options:"
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echo " -h | --help Show this help screen."
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echo " -b | --boot <path> The path to the boot drive (e.g. /dev/nvme0n1p1)."
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echo " -l | --luks <path> The path to the partition to create the LUKS container on (e.g. /dev/nvme0n1p2)."
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echo " -a | --ask-root-password Sets a password for the root user account."
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exit 2
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}
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# Argument processing logic shamelessly stolen from https://stackoverflow.com/questions/192249/how-do-i-parse-command-line-arguments-in-bash
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POSITIONAL_ARGS=()
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while [[ $# -gt 0 ]]; do
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case "$1" in
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--ask-root-password|-a)
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ask_root_password=true
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shift
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;;
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--boot|-b)
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boot_partition="$2"
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shift
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shift
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;;
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--luks|-l)
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luks_partition="$2"
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shift
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shift
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;;
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--help|-h)
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usage
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shift
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;;
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*)
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POSITIONAL_ARGS+=("$1") # save positional arg
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shift # past argument
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;;
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esac
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done
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set -- "${POSITIONAL_ARGS[@]}" # restore positional parameters
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cryptsetup luksOpen $luks_partition nixos-crypt
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mkfs.btrfs -L nixos $root_partition
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mount /dev/mapper/nixos-crypt /mnt
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btrfs subvolume create /mnt/@
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btrfs subvolume create /mnt/@home
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btrfs subvolume create /mnt/@log
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btrfs subvolume create /mnt/@nix
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btrfs subvolume create /mnt/@swap
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umount /mnt
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mount -o subvol=@ $root_partition /mnt
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mkdir -p /mnt/{boot,home,var/log,nix,swap}
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mount $boot_partition /mnt/boot
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mount -o subvol=@home $root_partition /mnt/home
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mount -o subvol=@log $root_partition /mnt/var/log
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mount -o subvol=@nix $root_partition /mnt/nix
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mount -o subvol=@swap $root_partition /mnt/swap
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echo "Disks partitioned and mounted to /mnt."
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# Generate hardware-configuration.nix
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nixos-generate-config --no-filesystems --dir /home/nixos
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echo "Configuration files generated and saved to /home/nixos."
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echo "Setup complete!"
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echo "To install, set up your system's configuration files under ./hosts/yourHost and add it to flake.nix."
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echo "Then, run the following command:"
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echo "nixos-install --verbose --root /mnt --flake [path-to-flake.nix] $( (( ask_root_password == false )) && echo "--no-root-password" )"
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exit 0
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