IHaskell.Display.Widgets.Singletons: add -XStandaloneDeriving

quytelda · Feb 8, 2019 · 33f63ff · 33f63ff
1 parent a36ce6b
commit 33f63ff
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/ihaskell-display/ihaskell-widgets/src/IHaskell/Display/Widgets/Singletons.hs b/ihaskell-display/ihaskell-widgets/src/IHaskell/Display/Widgets/Singletons.hs
@@ -6,6 +6,7 @@
 {-# LANGUAGE TemplateHaskell #-}
 {-# LANGUAGE QuasiQuotes #-}
 {-# LANGUAGE ScopedTypeVariables #-}
+{-# LANGUAGE StandaloneDeriving #-}
 {-# LANGUAGE InstanceSigs #-}
 {-# LANGUAGE EmptyCase #-}
 {-# LANGUAGE CPP #-}