Skip the slow test on macOS for now.

Author: 23Skidoo

cabal-testsuite/PackageTests/TestSuiteTests/ExeV10/cabal-with-hpc.multitest.hs

@@ -8,7 +8,9 @@ import qualified Distribution.Verbosity as Verbosity
 
 import Test.Cabal.Prelude
 
-main =
+main = do
+    skipIf =<< isOSX -- TODO: re-enable this once the macOS Travis
+                     -- issues are resolved, see discussion in #4902.
     forM_ (choose4 [True, False]) $ \(libProf, exeProf, exeDyn, shared) ->
       do
         let