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-rw-r--r--haddock-api/src/Haddock/GhcUtils.hs3
1 files changed, 2 insertions, 1 deletions
diff --git a/haddock-api/src/Haddock/GhcUtils.hs b/haddock-api/src/Haddock/GhcUtils.hs
index 83d23d1b..c870fdf9 100644
--- a/haddock-api/src/Haddock/GhcUtils.hs
+++ b/haddock-api/src/Haddock/GhcUtils.hs
@@ -41,6 +41,7 @@ import GHC.Types.Var.Env ( TyVarEnv, extendVarEnv, elemVarEnv, emptyVarEnv )
import GHC.Core.TyCo.Rep ( Type(..) )
import GHC.Core.Type ( isRuntimeRepVar )
import TysWiredIn( liftedRepDataConTyCon )
+import GHC.Hs.Utils (XCollectPat(..))
import StringBuffer ( StringBuffer )
import qualified StringBuffer as S
@@ -55,7 +56,7 @@ moduleString = moduleNameString . moduleName
isNameSym :: Name -> Bool
isNameSym = isSymOcc . nameOccName
-getMainDeclBinder :: HsDecl (GhcPass p) -> [IdP (GhcPass p)]
+getMainDeclBinder :: (XCollectPat (GhcPass p)) => HsDecl (GhcPass p) -> [IdP (GhcPass p)]
getMainDeclBinder (TyClD _ d) = [tcdName d]
getMainDeclBinder (ValD _ d) =
case collectHsBindBinders d of