@@ -1,7 +1,11 @@
1module Main where
2module Main where
3import Control.Monad (when)
4import Control.Monad (when)
4import Data.Maybe (fromMaybe)
5import Data.Maybe (fromMaybe)
6+#if !(MIN_VERSION_base(4,11,0))
7+import Data.Semigroup ((<>))
5import System.Environment (getArgs, getProgName)
9import System.Environment (getArgs, getProgName)
6import System.Exit (exitFailure)
10import System.Exit (exitFailure)
7import System.Console.GetOpt
11import System.Console.GetOpt