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-rw-r--r--haddock-api/src/Haddock/Backends/Hyperlinker/Ast.hs7
1 files changed, 4 insertions, 3 deletions
diff --git a/haddock-api/src/Haddock/Backends/Hyperlinker/Ast.hs b/haddock-api/src/Haddock/Backends/Hyperlinker/Ast.hs
index 28fdc3f5..71b73663 100644
--- a/haddock-api/src/Haddock/Backends/Hyperlinker/Ast.hs
+++ b/haddock-api/src/Haddock/Backends/Hyperlinker/Ast.hs
@@ -146,7 +146,7 @@ decls (group, _, _, _) = concatMap ($ group)
-- import lists.
imports :: GHC.RenamedSource -> DetailsMap
imports src@(_, imps, _, _) =
- everything (<|>) ie src ++ map (imp . GHC.unLoc) imps
+ everything (<|>) ie src ++ mapMaybe (imp . GHC.unLoc) imps
where
ie term = case cast term of
(Just (GHC.IEVar v)) -> pure $ var v
@@ -156,9 +156,10 @@ imports src@(_, imps, _, _) =
_ -> empty
typ (GHC.L sspan name) = (sspan, RtkType name)
var (GHC.L sspan name) = (sspan, RtkVar name)
- imp idecl =
+ imp idecl | not . GHC.ideclImplicit $ idecl =
let (GHC.L sspan name) = GHC.ideclName idecl
- in (sspan, RtkModule name)
+ in Just (sspan, RtkModule name)
+ imp _ = Nothing
-- | Check whether token stream span matches GHC source span.
--