> ## Documentation Index
> Fetch the complete documentation index at: https://bazel-pr-29946.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# toolchain_type

A data type describing a dependency on a specific toolchain type.

## Members

* [mandatory](#mandatory)
* [toolchain\_type](#toolchain_type)

## mandatory

```
bool toolchain_type.mandatory
```

Whether the toolchain type is mandatory or optional.

## toolchain\_type

```
Label toolchain_type.toolchain_type
```

The toolchain type that is required.