Note: The default branch for the SwiftLint git repository will be renamed from master to main on September 1st. Please update any code or automation accordingly.

Breaking

• SwiftLint now requires Swift 5.6 or higher to build, and macOS 12 or higher to run.
  JP Simard

• Code Climate reports now use SHA256 strings as the issue fingerprint values.
  JP Simard

• Make comma_inheritance an opt-in rule.
  Steve Madsen #4027

• The autocorrect command that was deprecated in 0.43.0 has now been completely removed. Use --fix instead.
  JP Simard

• Remove the AutomaticTestableRule protocol. All examples listed in rules are now tested automatically to make sure they are correct.
  SimplyDanny

• Deprecate the --in-process-sourcekit command line flag. SwiftLint now always uses an in-process SourceKit.
  JP Simard

Experimental

• None.

Enhancements

• Make duplicate_imports rule correctable. Fix duplicate_imports rule reporting redundant violations when more than one duplicate is present.
  Timofey Solonin

• Support for building SwiftLint with bazel.
  JP Simard

• Support for writing custom private native rules when building with bazel.
  JP Simard Keith Smiley #3516

• Make comma rule about 10x faster, finding some previously missed cases and fixing some previously wrong corrections.
  JP Simard

• Make colon rule about 7x faster, finding some previously missed cases.
  JP Simard

• Make closure_spacing rule about 9x faster, finding some previously missed cases and fixing some previously wrong corrections.
  JP Simard SimplyDanny #4090

• Introduce new configuration option include_compiler_directives (true by default) for the indentation_width rule that allows to ignore compiler directives in the indentation analysis. This is especially useful if one (or a formatter) prefers to have compiler directives always at the very beginning of a line.
  SimplyDanny #4030

• Enable (recursive) globs in included file paths.
  sarastro-nl

• Custom rules are now broken down per rule instead of in aggregate in --benchmark.
  JP Simard

• The version command now has an optional --verbose flag that prints out the full version info, notably the build ID, which can be used to determine if two swiftlint executables are identical.
  JP Simard

• Update documentation for multiline_arguments_brackets and multiline_literal_brackets to make it immediately obvious that common examples will trigger.
  chrisjf #4060

• The --compile-commands argument can now parse SwiftPM yaml files produced when running swift build at .build/{debug,release}.yaml.
  JP Simard

• Add new configuration option allowed_no_space_operators to operator_usage_whitespace rule. It allows to specify custom operators which shall not be considered by the rule.
  imben123

• Add new protocols to remove some boilerplate involved in writing SwiftSyntax-based rules.
  JP Simard

Bug Fixes

• Fix false positive in self_in_property_initialization rule when using closures inside didSet and other accessors.
  Marcelo Fabri #4041

• Fix false positive in Duplicated Key in Dictionary Literal Violation rule when using keys that are generated at runtime with the same source code.
  OrEliyahu #4012

• Fix false positive in yoda_condition rule by basing it on SwiftSyntax.
  SimplyDanny #4081

• Fix false negatives in first_where rule when filtering array of dictionaries with String keys.
  KS1019

• Fix broken correction for explicit_init rule.
  KS1019

Using Bazel

Put this in your WORKSPACE:

load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")

http_archive(
    name = "build_bazel_rules_apple",
    sha256 = "f003875c248544009c8e8ae03906bbdacb970bc3e5931b40cd76cadeded99632",
    url = "https://github.com/bazelbuild/rules_apple/releases/download/1.1.0/rules_apple.1.1.0.tar.gz",
)

load(
    "@build_bazel_rules_apple//apple:repositories.bzl",
    "apple_rules_dependencies",
)

apple_rules_dependencies()

load(
    "@build_bazel_rules_swift//swift:repositories.bzl",
    "swift_rules_dependencies",
)

swift_rules_dependencies()

load(
    "@build_bazel_rules_swift//swift:extras.bzl",
    "swift_rules_extra_dependencies",
)

swift_rules_extra_dependencies()

http_archive(
    name = "SwiftLint",
    sha256 = "ec566314e9220ff681ddb639d3a0532834f66f7e733f5a59c7390469dcb5bd3e",
    url = "https://github.com/realm/SwiftLint/releases/download/0.49.0/bazel.tar.gz",
)

load("@SwiftLint//bazel:repos.bzl", "swiftlint_repos")

swiftlint_repos()

load("@SwiftLint//bazel:deps.bzl", "swiftlint_deps")

swiftlint_deps()

Then you can run SwiftLint in the current directory with this command:

bazel run @SwiftLint//:swiftlint -- --help