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Install SwiftLint

To install SwiftLint simply run the following line in your terminal:

brew install swiftlint

SwiftLint will run every time you build the project and show you all warnings and errors for the possible violations in your Xcode IDE.

Install SwiftLint Autocorrect

⚠ ️This plugin will not work with Xcode 8 or later without disabling SIP(System Integrity Protection). But disabling SIP is not recommended.

To enable SwiftLint autocorrect in your Xcode project you need to install the Xcode-plugin SwiftLintXcode. To load third-party plugins in Xcode 8 we have to re-codesign Xcode, because Xcode 8 won't load any unsigned plugins without resigning Xcode itself.

Re-codesign Xcode

  1. Close Xcode.
  2. Open Keychain Access and select login in the left pane.
  3. Go to KeyChain Access -> Certificate Assistant Select Create a Certificate.
  4. Set XcodeSigner as the name and select Code Signing for Certificate Type.
  5. Press Create.
  6. Go to Terminal and write the following command to re-codesign Xcode with the new certificate: sudo codesign -f -s XcodeSigner /Applications/Xcode.app (this can take a few minutes)

SwiftLintXcode is available through Alcatraz.

Install Alcatraz

  1. Download Alcatraz here.
  2. Open and build the Xcode project. Alcatraz.xcplugin will be created and saved automatically to Xcode's Plug-ins folder.
  3. Restart Xcode.
  4. When a pop-up asks to load or skip bundle, choose Load Bundle.

Install SwiftLintXcode

  1. In Xcode go to Window -> Package Manager, search for SwiftLintXcode and press Install.
  2. Restart Xcode.
  3. When a pop-up asks to load or skip bundle, choose Load Bundle.

That's it! Now everytime your swift file is (auto)saved, the autocorrect is executed.

Change the SwiftLint file

Run the command open .swiftlint.yml from your project to adjust the rules.