Cargo Check Post-Edit Hook Configuration

File

rust/.claude/settings.json

Purpose

Runs cargo check --message-format=short automatically after any Edit or Write to .rs files during a Claude Code session. Provides fast feedback without waiting for a manual build.

Why cargo check (not clippy)

cargo clippy is too slow for every single edit (takes several seconds)
cargo check is faster — catches type errors and borrow checker issues quickly
Clippy should be run manually at logical checkpoints:
- Before commits
- After finishing a feature
- After batch edits to multiple files

Settings JSON Structure

{
  "hooks": {
    "PostToolUse": [
      {
        "matcher": { "tool_name": ["Edit", "Write"], "file_paths": [".*\\.rs$"] },
        "hooks": [
          { "type": "command", "command": "cargo check --message-format=short" }
        ]
      }
    ]
  }
}

Documentation

Also documented in rust/CLAUDE.md for future session context.

1.3 KiB Raw Blame History