Fatal error: Loading sourcekitdInProc.framework/Versions/A/sourcekitdInProc failed zsh: illegal hardware instruction swiftlint

New Issue Checklist

• [ x] I've Updated SwiftLint to the latest version.
• [ x] I've searched for existing GitHub issues.

Bug Description

I just upgraded to Xcode 26.2 and swiftLint to 0.63.2 (see more in environment section). The Xcode build phase script failed to execute.

(1) I tried the method mentioned in many comments

sudo xcode-select -s /Applications/Xcode.app/Contents/Developer

but it does not work for me, if you check the snapshot below, it shows the

SourceKittenFramework/library_wrapper.swift:58: Fatal error: Loading sourcekitdInProc.framework/Versions/A/sourcekitdInProc failed

(2) Some folks mentioned that they got it work on Xcode 26.0 (17A324) and I am not sure this is a Xcode specific problem.

Build Phase Script

if [ "$CI_TEST" == true ]; then
    echo "Not local env, skip swiftLint"
    exit 0
else
    echo "Start swiftLint"
fi


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

if which swiftlint >/dev/null; then
    swiftlint --fix && swiftlint
    # echo "swiftLint disabled"
else
    echo "warning: SwiftLint not installed, download from https://github.com/realm/SwiftLint"
    exit 1
fi

Environment

.yml

disabled_rules:
  - statement_position # https://realm.github.io/SwiftLint/statement_position.html
  - colon
  - nesting
  - line_length
  - identifier_name
  - multiple_closures_with_trailing_closure
  - cyclomatic_complexity
  - function_body_length
  - type_name
  - file_length
  - type_body_length
  - function_parameter_count
  - large_tuple
  - redundant_discardable_let
  - for_where
  - unneeded_synthesized_initializer

included:
  - <MY_PROJECT>
  - <MY_PROJECT>Tests
  - <MY_PROJECT>UITests
  
excluded:
  - Packages/<MY_PROJECT>/Sources/<MY_PROJECT>/Hashids.swift

Start with the failing build phase script and the reported SourceKittenFramework/library_wrapper.swift:58 error under Xcode 26.2 and SwiftLint 0.63.2. Compare the Xcode 26.0 discussion in issue 6221, then reproduce the failure with the provided script and environment details. Done means identifying a reproducible project cause and a confirmed fix or documented compatibility outcome.