   }
 
   func testOutputFileMapRelativePathArg() throws {
-#if os(Windows)
-    throw XCTSkip("TSCUtility.RelativePath failure")
-#else
     guard let cwd = localFileSystem.currentWorkingDirectory else {
       fatalError()
     }

        .init(file: VirtualPath.relative(utilRelative).intern(), type: .swift) : utilMDate,
      ])
    }
#endif
  }

  func testPrimaryOutputKinds() throws {

  }

  func testRecordedInputModificationDates() throws {
    guard let cwd = localFileSystem.currentWorkingDirectory else {
      fatalError()
    }
