     throw XCTSkip("TSCUtility.RelativePath failure")
 #else
     try withTemporaryDirectory { path in
-      guard let cwd = localFileSystem
-        .currentWorkingDirectory else { fatalError() }
+      guard let cwd = localFileSystem.currentWorkingDirectory else {
+        fatalError()
+      }
       let main = path.appending(component: "main.swift")
       let util = path.appending(component: "util.swift")
       let utilRelative = util.relative(to: cwd)

    throw XCTSkip("TSCUtility.RelativePath failure")
#else
    try withTemporaryDirectory { path in
      guard let cwd = localFileSystem
        .currentWorkingDirectory else { fatalError() }
      let outputFileMap = path.appending(component: "outputFileMap.json")
      try localFileSystem.writeFileContents(outputFileMap) {
        $0 <<< """


  func testResponseFileExpansionRelativePathsInCWD() throws {
    try withTemporaryDirectory { path in
      guard let preserveCwd = localFileSystem.currentWorkingDirectory else {
        fatalError()
      }
      try! localFileSystem.changeCurrentWorkingDirectory(to: path)
      defer { try! localFileSystem.changeCurrentWorkingDirectory(to: preserveCwd) }

