_zimfw_run_tool() {
  local -r zname=${1}
  if [[ -z ${_zurls[${zname}]} ]]; then
    if (( _zprintlevel > 1 )) print -PR <%= clear_line %>"<%= okay %>%B${zname}:%b Skipping external module"
    return 0
  fi
  if (( _zfrozens[${zname}] )); then
    if (( _zprintlevel > 1 )) print -PR <%= clear_line %>"<%= okay %>%B${zname}:%b Skipping frozen module"
    return 0
  fi
  case ${_zargs_action} in
    install)
      if [[ -e ${_zdirs[${zname}]} ]]; then
        if (( _zprintlevel > 1 )) print -PR <%= clear_line %>"<%= okay %>%B${zname}:%b Skipping already installed module"
        return 0
      fi
      _zimfw_print -nR <%= clear_line %>"Installing ${zname}<%= ellipsis %>"
      ;;
    update)
      if [[ ! -d ${_zdirs[${zname}]} ]]; then
        print -u2 -PR <%= clear_line %>"%F{red}<%= error %>%B${zname}:%b Not installed. Run %Bzimfw install%b to install.%f"
        return 1
      fi
      _zimfw_print -nR <%= clear_line %>"Updating ${zname}<%= ellipsis %>"
      ;;
    *)
      print -u2 -PR <%= clear_line %>"%F{red}<%= error %>%B${zname}:%b Unknown action ${_zargs_action}%f"
      return 1
      ;;
  esac
  local zcmd
  case ${_ztools[${zname}]} in
<%= render_tools("src/tools/*", "zcmd") %>
    *)
      print -u2 -PR "<%= clear_line %>%F{red}<%= error %>%B${zname}:%b Unknown tool ${_ztools[${zname}]}%f"
      return 1
      ;;
  esac
  zsh -c ${zcmd} ${_ztools[${zname}]} "${_zprintlevel}" "${_zargs_action}" "${zname}" "${_zdirs[${zname}]}" "${_zurls[${zname}]}" "${_ztypes[${zname}]}" "${_zrevs[${zname}]}" "${_zsubmodules[${zname}]}" "${_zonpulls[${zname}]}"
}