Limit mutation checks to per commit diffs - #21
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this says it limits mutants to --in-diff but actually does a bunch of things, please split into separate commits or ideally separate PRs
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PR now focuses on mutant diff and also nextest baseline those are what were dicussed in #17 other changes have been removed Also PR has been updated to suggested changes |
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Closes #17
This PR makes mutation testing faster by passing each commit’s first-parent diff to cargo-mutants, limiting mutations to code changed by that commit. Compatible checks remain batched while mutation checks run separately with their commit-specific Nix input.
CI now runs a quick validation stage before the complete suite avoiding expensive checks when basic tests or linting already fail. It also reuses the successful Nextest result instead of repeating the mutation baseline run.