dotfiles/apps/installer.nix

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Nix
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{ pkgs, ... }:
{
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# Inspired by https://github.com/cleverca22/nix-tests/blob/master/kexec/justdoit.nix
# This script will partition and format drives; use at your own risk!
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type = "app";
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program = builtins.toString (
pkgs.writeShellScript "installer" ''
set -e
DISK=$1
FLAKE=$2
PARTITION_PREFIX=""
if [ -z "$DISK" ] || [ -z "$FLAKE" ]; then
${pkgs.gum}/bin/gum style --width 50 --margin "1 2" --padding "2 4" \
--foreground "#fb4934" \
"Missing required parameter." \
"Usage: installer -- <disk> <host>" \
"Example: installer -- nvme0n1 tempest" \
"Flake example: nix run github:nmasur/dotfiles#installer -- nvme0n1 tempest"
echo "(exiting)"
exit 1
fi
case "$DISK" in nvme*)
PARTITION_PREFIX="p"
esac
${pkgs.gum}/bin/gum confirm \
"This will ERASE ALL DATA on the disk /dev/''${DISK}. Are you sure you want to continue?" \
--default=false
${pkgs.parted}/bin/parted /dev/''${DISK} -- mklabel gpt
${pkgs.parted}/bin/parted /dev/''${DISK} -- mkpart primary 512MiB 100%
${pkgs.parted}/bin/parted /dev/''${DISK} -- mkpart ESP fat32 1MiB 512MiB
${pkgs.parted}/bin/parted /dev/''${DISK} -- set 3 esp on
mkfs.ext4 -L nixos /dev/''${DISK}''${PARTITION_PREFIX}1
mkfs.fat -F 32 -n boot /dev/''${DISK}''${PARTITION_PREFIX}2
mount /dev/disk/by-label/nixos /mnt
mkdir --parents /mnt/boot
mount /dev/disk/by-label/boot /mnt/boot
${pkgs.nixos-install-tools}/bin/nixos-install --flake github:nmasur/dotfiles#''${FLAKE}
''
);
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}