install_info() {
  echo "Nix is installed and configured, and the nix-daemon should be running.  To check,"
  echo "you can run:"
  echo
  echo "    archlinux-nix status"
  echo
  echo "Each user's environment is setup on login.  Alternatively, you can execute the"
  echo "following to avoid having to log back in:"
  echo
  echo "    source /etc/profile.d/nix{,-daemon}.sh"
  echo
  echo "For more information on how to use nix, check out Part III of the Nix Manual:"
  echo
  echo "    https://nixos.org/nix/manual/#chap-package-management"
  echo
}

remove_info() {
  echo "You may wish to do some clean up:"
  echo
  echo "1. delete /nix folder"
  echo "   # rm -r /nix"
  echo
  echo "2. delete the build users (if any)"
  echo "   # archlinux-nix delete-build-group"
  echo
  echo "3. delete the config dir"
  echo "   # rm -r /etc/nix"
  echo
  echo "4. uninstall the archlinux-nix tool"
  echo "   pacman -R archlinux-nix"
  echo
  echo "5. you may also want to delete nix-related files from users' home dirs"
  echo "   # rm -r /root/.nix-* /home/*/.nix-*"
  echo
}

post_install() {
  archlinux-nix bootstrap
  install_info
}

post_upgrade() {
  archlinux-nix bootstrap
}

post_remove() {
  remove_info
}