(<>) needs the import of Data.Semigroup (ghc 8.2.2)
commit08b5e8653683a6558aa39898684b91819438fbcf
authorakhesacaro <caroline.gaudreau@gmail.com>
dateTue 16 Mar 2021, 20:31 (6 years ago)
parent86eb250
doc/cookbook/custom-errors/CustomErrors.lhs+1
@@ -20,6 +20,7 @@ Extensions and imports:
2020import Data.Aeson
2121import Data.Proxy
2222import Data.Text
23+import Data.Semigroup
2324import GHC.Generics
2425import Network.Wai
2526import Network.Wai.Handler.Warp