post_install() {
  if (! pacman -Q grapejuice &>/dev/null) && (! flatpak info net.brinkervii.grapejuice &>/dev/null); then
    for i in {0..2}; do
      echo -e "\033[1;33muse grapejuice\033[0m"
    done
  fi
}

post_upgrade() {
  post_install
}