2 files changed, 23 insertions, 10 deletions
diff --git a/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs b/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs
index b354658d..660a8475 100644
--- a/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs
+++ b/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs
@@ -607,20 +607,25 @@ ppInstHead links splice unicode qual mdoc origin orphan no ihd@(InstHead {..}) =
             , [subInstDetails iid ats sigs]
             )
           where
-            iid = instanceId origin no orphan ihd
             sigs = ppInstanceSigs links splice unicode qual clsiSigs
             ats = ppInstanceAssocTys links splice unicode qual clsiAssocTys
         TypeInst rhs ->
-            (ptype, mdoc, [])
+            ( subInstHead iid ptype
+            , mdoc
+            , [subFamInstDetails iid prhs]
+            )
           where
-            ptype = keyword "type" <+> typ <+> prhs
+            ptype = keyword "type" <+> typ
             prhs = maybe noHtml (\t -> equals <+> ppType unicode qual t) rhs
         DataInst dd ->
-            (pdata, mdoc, [])
+            ( subInstHead iid pdata
+            , mdoc
+            , [subFamInstDetails iid pdecl])
           where
-            pdata = keyword "data" <+> typ <+> pdecl
+            pdata = keyword "data" <+> typ
             pdecl = ppShortDataDecl False True dd unicode qual
   where
+    iid = instanceId origin no orphan ihd
     typ = ppAppNameTypes ihdClsName ihdKinds ihdTypes unicode qual
 
 
diff --git a/haddock-api/src/Haddock/Backends/Xhtml/Layout.hs b/haddock-api/src/Haddock/Backends/Xhtml/Layout.hs
index 26aeaff8..19de935c 100644
--- a/haddock-api/src/Haddock/Backends/Xhtml/Layout.hs
+++ b/haddock-api/src/Haddock/Backends/Xhtml/Layout.hs
@@ -31,7 +31,8 @@ module Haddock.Backends.Xhtml.Layout (
   subConstructors,
   subEquations,
   subFields,
-  subInstances, subOrphanInstances, subInstHead, subInstDetails,
+  subInstances, subOrphanInstances,
+  subInstHead, subInstDetails, subFamInstDetails,
   subMethods,
   subMinimal,
 
@@ -179,7 +180,6 @@ subAssociatedTypes = divSubDecls "associated-types" "Associated Types" . subBloc
 subConstructors :: Qualification -> [SubDecl] -> Html
 subConstructors qual = divSubDecls "constructors" "Constructors" . subTable qual
 
-
 subFields :: Qualification -> [SubDecl] -> Html
 subFields qual = divSubDecls "fields" "Fields" . subDlist qual
 
@@ -226,10 +226,18 @@ subInstDetails :: String -- ^ Instance unique id (for anchor generation)
                -> [Html] -- ^ Method contents (pretty-printed signatures)
                -> Html
 subInstDetails iid ats mets =
-    section << (subAssociatedTypes ats <+> subMethods mets)
-  where
-    section = thediv ! collapseSection (instAnchorId iid) False "inst-details"
+    subInstSection iid << (subAssociatedTypes ats <+> subMethods mets)
+
+subFamInstDetails :: String -- ^ Instance unique id (for anchor generation)
+                  -> Html   -- ^ Type or data family instance
+                  -> Html
+subFamInstDetails iid fi =
+    subInstSection iid << declElem fi
 
+subInstSection :: String -- ^ Instance unique id (for anchor generation)
+               -> Html
+               -> Html
+subInstSection iid = thediv ! collapseSection (instAnchorId iid) False "inst-details"
 
 instAnchorId :: String -> String
 instAnchorId iid = makeAnchorId $ "i:" ++ iid