How to Run SwiftLint in GitHub Actions

Install SwiftLint with Homebrew and run it in strict mode so any warning fails the CI job.

SwiftLint ships as a Homebrew formula. Install it, then run swiftlint lint --strict so warnings become errors and the gate is enforced. Use --reporter github-actions-logging for inline annotations.

Steps

• Install SwiftLint with brew install swiftlint.
• Run swiftlint lint --strict to fail on any violation.
• Add --reporter github-actions-logging for inline PR annotations.

Workflow

jobs:
  lint:
    runs-on: macos-latest
    env:
      HOMEBREW_NO_AUTO_UPDATE: '1'
    steps:
      - uses: actions/checkout@v4
      - run: brew install swiftlint
      - run: swiftlint lint --strict --reporter github-actions-logging

Gotchas

• --strict turns warnings into a non-zero exit, so an unfixed warning blocks the merge.
• Commit a .swiftlint.yml so local and CI runs use the same enabled rules.

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