-import Data.Maybe (isJust)
-import GHC.Conc (getNumProcessors, setNumCapabilities)
-import System.IO (hPutStrLn, stderr)
-import System.Exit (exitSuccess, exitWith, ExitCode(..))
+import Data.Maybe ( fromJust )
+import GHC.Conc ( getNumProcessors, setNumCapabilities )
+import System.IO ( hPutStrLn, stderr )
+import System.Exit ( exitSuccess, exitWith, ExitCode(..) )