move apps into pkgs and rename hosts

pkgs/tools/misc/installer/package.nix

@@ -0,0 +1,44 @@
+{ pkgs, ... }:
+
+# 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!
+
+pkgs.writeShellScriptBin "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}
+''