add import Control.Monad in imports

2026-09-16 23:36:00 -06:00 · 2026-09-09 05:44:28 +02:00
parent 8fca28a76b
commit d790af2bd4
1 changed files with 1 additions and 1 deletions
@@ -50,7 +50,7 @@ grammar2haskell opts name gr = foldr (++++) [] $
          derivingClause
                 | dataExt = "deriving (Show,Data)"
                 | otherwise = "deriving Show"
-          extraImports | gadt = ["import Control.Monad.Identity", "import Data.Monoid"]
+          extraImports | gadt = ["import Control.Monad.Identity", "import Control.Monad", "import Data.Monoid"]
                       | dataExt = ["import Data.Data"]
                       | otherwise = []
          pgfImports = ["import PGF2", ""]