cargo-hack

Cargo subcommand for testing all feature flag combinations of a crate. Useful for catching compilation failures hidden behind optional features.

Install

cargo install cargo-hack

Usage

# check every feature combination compiles
cargo hack check --feature-powerset
 
# test with each feature enabled individually
cargo hack test --each-feature
 
# exclude specific features
cargo hack check --feature-powerset --exclude-features default

Flags

Flag	Effect
--feature-powerset	Test all combinations of features
--each-feature	Test each feature individually
--no-dev-deps	Skip dev-dependencies
--clean-per-run	Clean build artifacts between runs