rust-analyzer LSP

---

name: rust-analyzer-lsp

description: Rust language server (rust-analyzer) providing code intelligence and analysis for .rs files. Use when working with Rust code that needs autocomplete, go-to-definition, find references, error detection, or refactoring support.

---

# rust-analyzer LSP

Rust language server integration providing comprehensive code intelligence through rust-analyzer.

Capabilities

Installation

Via rustup (recommended)

rustup component add rust-analyzer

Via Homebrew (macOS)

brew install rust-analyzer

Via package manager (Linux)

# Ubuntu/Debian
sudo apt install rust-analyzer

# Arch Linux
sudo pacman -S rust-analyzer

Manual download

Download pre-built binaries from the [releases page](https://github.com/rust-lang/rust-analyzer/releases).

Verify installation:

rust-analyzer --version

Usage

The language server runs automatically in LSP-compatible editors. For manual operations:

Format code

cargo fmt

Run linter

cargo clippy

Build and test

cargo build
cargo test

Check without building

cargo check

Configuration

Create `.rust-analyzer.json` in project root:

{
  "checkOnSave": {
    "command": "clippy"
  },
  "inlayHints": {
    "typeHints": true,
    "parameterHints": true
  }
}

Integration Pattern

When editing Rust code:

1. rust-analyzer provides real-time diagnostics

2. Run `cargo fmt` to format code

3. Use `cargo clippy` for linting

4. Run `cargo test` before committing

Common Cargo Commands

More Information