user to install them, but with the lowest priority over other installed libraries with the same name, it's the

equivalent of the Arduino IDE's bundled libraries directory.

- `builtin.tools` - it's a list of directories of tools that will be available to all platforms without the need for

- `library` - configuration options relating to Arduino libraries.

- `enable_unsafe_install` - set to `true` to enable the use of the `--git-url` and `--zip-file` flags with

[`arduino-cli lib install`][arduino cli lib install]. These are considered "unsafe" installation methods because