Pin the lint toolchain with mise and move the hook to hk - #487
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lint.yml installed SwiftFormat and SwiftLint with a bare `brew install` -- whatever version Homebrew had that morning -- while contributors ran whatever they happened to have installed. A formatter release could therefore redden a pull request that changed nothing, and nothing in the repository recorded which version the rules were written against. Homebrew has no versioned formulae for either tool, so the pin has to live somewhere else. mise.toml now pins every tool the lint gate runs, and the three lint jobs install from it instead of from `brew` and `pipx`. The linters are still invoked directly with their github-actions reporters, so inline pull request annotations survive; CI does not run hk. The hand-rolled .githooks/pre-commit becomes hk.pkl. Both standing policies carry over: the hook checks rather than fixes, so a commit never contains changes you have not read, and it skips HTMLTemplates.swift, which SwiftLint excludes -- without that skip, SwiftLint exits nonzero with "No lintable files found" and fails a commit touching only that file. Installing the hook is now a side effect of `mise install` rather than a separate `git config core.hooksPath` step, but it stays opt-in: `mise trust` is where you agree to let the repository run its own setup. Contributors who set up the old directory must clear the leftover core.hooksPath, which would otherwise stop the new hook from firing; CONTRIBUTING.md carries that note. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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📝 WalkthroughWalkthroughThe legacy pre-commit hook was deleted. The repository now pins lint and hook tools with ChangesTooling migration
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: ⚪ Minimal · up to The PR pins the lint toolchain and moves hook setup to hk while preserving the existing checks; no actionable merge-blocking risk remains after normal checks and review. Possibly related PRs
🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Inline comments:
In `@mise.toml`:
- Around line 38-44: Update all three install_args values used by the CI setup
to include --no-hooks, preventing mise from running the postinstall hook during
partial installs while preserving the existing package installation arguments.
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hk.pklis excluded by!**/*.pkl
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.githooks/pre-commit.github/workflows/lint.ymlCONTRIBUTING.mdmise.toml
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- .githooks/pre-commit
Each lint job installs only the tools it needs, so `hk` is absent and mise.toml's postinstall hook exits 127 with `hk: command not found`. mise downgrades that to a warning and the jobs stayed green, but a warning present in every run is one nobody reads, and it would mask a postinstall failure that did matter. Installing a git hook on an ephemeral runner is pointless anyway. `--no-hooks` is a global mise flag rather than a `mise install` option -- `mise install --no-hooks shellcheck` exits with a usage error -- so it cannot ride along in the action's install_args. MISE_NO_HOOKS is the env form of the same switch, set once for the whole workflow. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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The bug this fixes
lint.ymlinstalled SwiftFormat and SwiftLint with a barebrew install— whatever version Homebrew had that morning — while contributors ran whatever they happened to have installed. A formatter release could therefore redden a pull request that changed nothing, and nothing in the repository recorded which version the rules were written against. Homebrew has no versioned formulae for either tool, so the pin has to live somewhere else.What changed
mise.tomlpins every tool the lint gate runs: SwiftFormat 0.62.1, SwiftLint 0.65.0, shellcheck 0.11.0, zizmor 1.29.0, plus hk and pkl. The Swift toolchain is deliberately absent — it comes from Xcode, and drift there is whattoolchain-drift.ymlwatches for.hk.pklreplaces the hand-rolled.githooks/pre-commit. Both standing policies carry over:fix = false), so a commit never contains changes you have not read.HTMLTemplates.swift, which.swiftlint.ymlexcludes. Without that skip SwiftLint exits nonzero withNo lintable files foundand fails a commit touching only that file.CI installs from
mise.tomlviajdx/mise-actioninstead ofbrewandpipx. The linters are still invoked directly with theirgithub-actionsreporters, so inline PR annotations survive. CI does not run hk —hk.pklandlint.ymlstay separate definitions on purpose.Installing the hook is now a side effect of
mise installrather than a separategit config core.hooksPathstep, but it stays opt-in:mise trustis where you agree to let the repository run its own setup.Upgrading
If you set up the old
.githooksdirectory, clear the leftover config once, or it will silently override the new hook:CONTRIBUTING.mdcarries this note too.Verification
Onboarding tested from a clean clone (
mise trust && mise install→ hook installed). Hook behavior, exercised through realgit commit:force_castHTMLTemplates.swift--no-verifyAlso confirmed the hook does not rewrite files (checksum unchanged across a failing commit),
zizmor --min-severity lowis clean on the edited workflows including the new SHA-pinned action, and full-repo shellcheck passes.🤖 Generated with Claude Code
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Documentation