upgrade-packages

name	upgrade-packages
description	Upgrade all Rust crate dependencies in Cargo.toml to their latest versions. Use when the user says "upgrade packages", "update dependencies", "bump versions", or "upgrade deps".
argument-hint	[--check-only] [--major] [crate-name]

Upgrade Packages

Upgrade all Rust crate dependencies to their latest compatible (or latest major, if --major) versions.

Arguments

• --check-only — List outdated crates without upgrading. Stop after Step 2.
• --major — Include major version bumps (breaking changes). Without this flag, stay within semver-compatible ranges.
• Any other argument is treated as a specific crate name to upgrade (instead of all crates).

Step 1 — Verify the manifest

Inspect the repo root for Cargo.toml. This project is a single Rust crate (not a workspace). All dependencies live under [dependencies] and [dev-dependencies] in the root Cargo.toml.

If Cargo.toml is missing, stop and tell the user.

Step 2 — List outdated crates

Run cargo outdated to list what's outdated BEFORE upgrading anything.

cargo outdated        # install: cargo install cargo-outdated
cargo update --dry-run

Read the docs: https://doc.rust-lang.org/cargo/commands/cargo-update.html

If --check-only was passed, and report the outdated list.