This is a prerelease version. It won't be published to Homebrew or CocoaPods. But there are many other ways to install:

• Downloading the attached SwiftLint.pkg installer and launching it
• Downloading the attached portable_swiftlint.zip archive, extracting it and moving the binary from portable_swiftlint/swiftlint to /usr/local/bin or elsewhere in your PATH
• Using Mint: mint install realm/SwiftLint@0.49.0-rc.1
• Cloning and building from source: git clone https://github.com/realm/SwiftLint.git && cd SwiftLint && git checkout 0.49.0-rc.1 && make install
• Docker: docker run -it -v `pwd`:`pwd` -w `pwd` ghcr.io/realm/swiftlint:0.49.0-rc.1
• Bazel: See instructions at the bottom

Changes from 0.48.0: https://github.com/realm/SwiftLint/compare/0.48.0...0.49.0-rc.1

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

• 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

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

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 = "36072d4f3614d309d6a703da0dfe48684ec4c65a89611aeb9590b45af7a3e592",
    url = "https://github.com/bazelbuild/rules_apple/releases/download/1.0.1/rules_apple.1.0.1.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 = "e954f4483f7f4cf523896693ee3505585f6beb0f791e362b42d9bdbb615f051a",
    url = "https://github.com/realm/SwiftLint/releases/download/0.49.0-rc.1/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