turns out records are just sugar

(and one that contains almost only mempty can be written much shorter
than I thought it could)

lib/CheckMap.hs

@@ -39,9 +39,9 @@ import           Util             (PrettyPrint (prettyprint), prettyprint)
 data MapResult = MapResult
   { mapresultLayer    :: Map Hint [Layer]
   , mapresultTileset  :: Map Hint [Tileset] --Map Text (LintResult Tileset)
-  , mapresultGeneral  :: [Lint]
   , mapresultDepends  :: [Dep]
   , mapresultProvides :: [Text]
+  , mapresultGeneral  :: [Lint]
   } deriving (Generic)
 
 instance ToJSON MapResult where
@@ -67,16 +67,10 @@ instance ToJSON CollectedLints where
 -- layers upwards in the file hierarchy
 loadAndLintMap :: FilePath -> Int -> IO (Maybe MapResult)
 loadAndLintMap path depth = loadTiledmap path >>= pure . \case
-    DecodeErr err -> Just $ MapResult
-      { mapresultLayer = mempty
-      , mapresultTileset = mempty
-      , mapresultDepends = []
-      , mapresultProvides = []
-      , mapresultGeneral =
+    DecodeErr err -> Just $ MapResult mempty mempty mempty mempty
         [ hint Fatal . T.pack $
           path <> ": Fatal: " <> err
         ]
-      }
     IOErr _ -> Nothing
     Loaded waMap ->
       Just (runLinter waMap depth)