| --- | |
| layout: documentation | |
| title: Custom Rules | |
| --- | |
| # Custom rules | |
| Skylark is the name of the extension mechanism in Bazel. It lets you write | |
| [custom build rules](rules.md) as well as compose existing ones into | |
| [macros](macros.md). | |
| ## Getting started | |
| Read the [concepts](concepts.md) behind Skylark and try the | |
| [cookbook examples](cookbook.md). To go further, read about the | |
| [standard library](lib/globals.html). | |