Feature powerset

How to build it

1. Run cargo hack with --feature-powerset in CI, bounding cost with --depth if needed.
2. Exclude feature combinations that cannot build, with a reason in the config.
3. Run the test suite for each combination that builds.

Signals in a repository

• cargo hack --feature-powerset steps in a workflow file.
• Feature lists in Cargo.toml with exclude or depth settings in the CI command.
• CI logs that show one run per feature combination.

In practice

4 repositories run a tool for this check in the scanned set.

• cargo-hack · 4 repos

Examples

• pola-rs/polars · cargo-hack

  cargo hack check -p polars --each-feature --no-dev-deps

• juspay/hyperswitch · cargo-hack

  cargo hack check --workspace --each-feature --all-targets --exclude-features v2 payment_v2

• tokio-rs/tokio · cargo-hack

  cargo hack test --each-feature

• tokio-rs/axum · cargo-hack

  cargo hack check --each-feature --no-dev-deps --all