cargo-hack ☆

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Description:
Cargo subcommand to provide options for testing and continuous integration

Type: Formula | Latest Version: 0.6.39@0 | Tracked Since: Dec 17, 2025

Links: Homepage | @taiki_e | formulae.brew.sh

Category: Developer tools

Tags: rust cargo testing ci developer-tools

Install: brew install cargo-hack

About:
Cargo-hack is a Cargo subcommand that adds powerful testing capabilities to Rust projects. It enables running tests across multiple feature flag combinations, Rust versions, and workspace members without complex scripting. This tool is essential for ensuring library compatibility and robust CI pipelines by easily detecting feature-related bugs.

Key Features:

Test across all feature combinations with '--feature-powerset'
Test against multiple Rust versions using '--rust-version'
Run commands for each workspace member individually
Filter tests by package, exclude specific crates, or skip private packages
Supports 'cargo check' and other cargo commands, not just 'cargo test'

Use Cases:

Ensuring a Rust library works correctly with all possible feature flag combinations
Running a project's test suite against multiple Rust versions to verify MSRV compatibility
Debugging CI failures that only occur with specific features enabled
Running tests for individual crates within a large workspace

Alternatives:

cargo-make – A general task runner, while cargo-hack is specialized for testing matrix operations like feature sets and Rust versions.
shell scripts – Manual loops are brittle and complex; cargo-hack provides a robust, integrated solution for testing matrices.

License: Apache-2.0 OR MIT

Bottles available for: arm64_tahoe, arm64_sequoia, arm64_sonoma, sonoma, arm64_linux, x86_64_linux

Version History

Detected	Version	Rev	Change	Commit
Jan 16, 2025 10:02pm		0	VERSION_BUMP	64175a87
Jan 16, 2025 1:00pm		0	NEW	5fc3b7ef