add_tools_helper() {
  tool=$1
  if [ "$tool" = "codeception" ]; then
    sudo ln -s "${composer_bin:?}"/codecept "${composer_bin:?}"/codeception
  elif [ "$tool" = "composer" ]; then
    configure_composer "${tool_path:?}"
  elif [ "$tool" = "cs2pr" ]; then
    sudo sed -i 's/\r$//; s/exit(9)/exit(0)/' "${tool_path:?}" 2>/dev/null ||
    sudo sed -i '' 's/\r$//; s/exit(9)/exit(0)/' "${tool_path:?}"
  elif [ "$tool" = "phan" ]; then
    add_extension fileinfo extension >/dev/null 2>&1
    add_extension ast extension >/dev/null 2>&1
  elif [ "$tool" = "phive" ]; then
    add_extension curl extension >/dev/null 2>&1
    add_extension mbstring extension >/dev/null 2>&1
    add_extension xml extension >/dev/null 2>&1
  elif [ "$tool" = "phpDocumentor" ]; then
    add_extension fileinfo extension >/dev/null 2>&1
    sudo ln -s "${tool_path:?}" "${tool_path_dir:?}"/phpdocumentor 2>/dev/null || true
    sudo ln -s "${tool_path:?}" "${tool_path_dir:?}"/phpdoc
  elif [[ "$tool" =~ (symfony|vapor|wp)-cli ]]; then
    sudo ln -s "${tool_path:?}" "${tool_path_dir:?}"/"${tool%-*}"
  fi
}