setup-rust

Setup Rust Project

Resolve target

If $ARGUMENTS blank: work in current dir, use its name as project name. If $ARGUMENTS given: create and enter ./$ARGUMENTS.

Prerequisites

Verify cargo is available. Stop if missing (tell user to install via rustup).

Initialize

Run cargo init --name <name>. Skip if Cargo.toml already exists.

Dependencies

Use cargo add — never hardcode versions in Cargo.toml. Only add deps that are not already present in Cargo.toml.

Add if missing: anyhow, tokio (full features), tracing, tracing-subscriber (env-filter + json features), serde (derive feature), serde_json, dotenvy. Add dev if missing: tokio-test.

Configure

For each file: create if missing, update if present but incomplete — never overwrite user customizations.

• rust-toolchain.toml — stable channel, rustfmt + clippy components
• rustfmt.toml — 100 max width, Crate imports granularity, StdExternalCrate grouping
• .clippy.toml — set msrv to current stable, deny = ["clippy::all"]
• .gitignore — append /target, .env* if not already excluded
• .env.example — add RUST_LOG=info if missing

Starter files

Replace src/main.rs only if it's the default cargo stub. Use tokio async main with tracing init. Create README.md only if missing.

Git hooks

Set up git hooks: pre-commit runs cargo fmt --check + cargo clippy -- -D warnings, pre-push runs cargo test. Skip if hooks already configured.

Verify

Run cargo check. Report errors but do not fail.

Done

Output project name, dir, and key commands: cargo run, cargo clippy, cargo test.