Fix deprecation warnings

1 files changed, 2 insertions, 7 deletions

diff --git a/src/System/IO/Terminal/Render.hs b/src/System/IO/Terminal/Render.hs
index 6939c9f..86b5cb3 100644
--- a/src/System/IO/Terminal/Render.hs
+++ b/src/System/IO/Terminal/Render.hs
@@ -49,7 +49,6 @@ module System.IO.Terminal.Render
     ,module System.IO.Terminal.Characters)
     where
 
-import Control.Concurrent
 import Control.Monad.State.Strict
 import Data.Array.IO
 import Data.Colour.SRGB hiding (RGB)
@@ -131,12 +130,8 @@ withRender act = do
     whenM (liftIO $ not <$> hIsTerminalDevice stdout) $
         liftIO $ die "ERROR: Stdout is not connected to a terminal!"
 
-    liftIO $ A.hSupportsANSIWithoutEmulation stdout >>= \case
-        Just True  -> return ()
-        Just False -> die "ERROR: Terminal is not capable of interpreting ANSI escape sequences!"
-        Nothing    -> do
-            hPutStrLn stderr "WARNING: Cannot determine terminal capabilities; continuing anyway..."
-            threadDelay 1000000
+    liftIO $ whenM (not <$> A.hSupportsANSI stdout) $
+        die "ERROR: Terminal is not capable of interpreting ANSI escape sequences!"
 
     liftIO IO.toAlternateScreen
     liftIO A.clearScreen