#!/bin/sh

echo "this is meant to be run from the iso!!!"
if [ -e "/mnt/etc/nixos" ] ; then
  echo "iso detected. continue!"
else
  echo "you don't appear to be in the install iso."
  echo -n "are you SURE??? (y/N) "
  read sure
  if ! [ "$sure" = "y" ] ; then
    echo "ok. exiting."
    exit 0
  fi
  echo "i will continue."
fi

echo "> setting up channels:"
echo deleting old
nix-channel --remove nixos
echo adding os channel
nix-channel --add "https://channels.nixos.org/nixos-unstable" nixos
echo adding pkgs channel
nix-channel --add "https://channels.nixos.org/nixpkgs-unstable" nixpkgs
echo updating
nix-channel --update
echo "> all set."
echo
echo "you can now do the following to finish setup:"
echo " 1. reboot the system"
echo " 2. open tty1 and login as root"
echo " 3. run nixos-edit init"
echo " 4. finish setup for tudbut user"
echo " 5. login on tty7"
echo " 6. go back to tty1 and do what nixos-edit tells you"
echo
echo -n "do you want to install and reboot now? [Y/n] "
read yn
if [ "$yn" != n ] ; then 
  nixos-install || exit 1
  echo "rebooting"
  sleep 1
  reboot
fi