YANG Language Support

YANG language support for Zed

Full YANG language support for the Zed IDE.

Features

Syntax highlighting using tree-sitter-yang.
Language Server Protocol (LSP) using yang-lsp.
- Code completion
- Diagnostics and validation
- Go to definition
- Find references
- Hover documentation

Requirements

Java Runtime - yang-lsp requires Java to run.
- macOS: brew install openjdk
- Ubuntu/Debian: sudo apt install default-jdk
- RHEL/CentOS: sudo yum install java-11-openjdk

The language server is automatically downloaded on first use.

Configuration

Configure yang-lsp through Zed's settings (~/.config/zed/settings.json or .zed/settings.json in your project):

{
  "lsp": {
    "yang-lsp": {
      "settings": {
        "excludePath": "build:bin",
        "yangPath": "/path/to/yang/libs",
        "diagnostic": {
          "xpath-linking-error": "ignore",
          "missing-revision": "warning"
        }
      }
    }
  }
}

Available Settings

Setting	Description
`excludePath`	Colon-separated paths to exclude from indexing (e.g., `"build:bin"`)
`yangPath`	Path to external YANG libraries (files, directories, or ZIP files)
`yangPathIgnore`	Paths to ignore within `yangPath`
`code-lens-enabled`	Enable/disable code lens (`"on"` or `"off"`)
`diagnostic`	Object mapping diagnostic codes to severities (`"error"`, `"warning"`, `"ignore"`)

You can also create a yang.settings file in your project root for project-specific configuration.

Credits

tree-sitter-yang - Grammar for syntax highlighting. All grammar credits go to the original authors.
yang-lsp - Language server by TypeFox.