An Xcode BuildPhase to enforce a minimum SwiftLint version

SwiftlintBuildPhase.sh

if [[ "$(uname -m)" == arm64 ]]; then
    export PATH="/opt/homebrew/bin:$PATH"
fi

SWIFTLINT_VERSION=$(swiftlint --version | awk '{print $NF}')
MIN_VERSION="0.52.4"

# Only run if `installed version` >= `minimum version`. 
if [[ "$(printf '%s\n' "$MIN_VERSION" "$SWIFTLINT_VERSION" | sort -V | head -n1)" == "$MIN_VERSION" ]]; then
    echo "SwiftLint version: $SWIFTLINT_VERSION"
    swiftlint
else
    echo "error: SwiftLint version $MIN_VERSION is required, but you have version $SWIFTLINT_VERSION installed. Run: brew install swiftlint"
    exit 1
fi