fix removal of 'def' in all modules

diagnose.cabal

@@ -1,11 +1,11 @@
 cabal-version: 1.12
 
--- This file has been generated from package.yaml by hpack version 0.35.0.
+-- This file has been generated from package.yaml by hpack version 0.35.2.
 --
 -- see: https://github.com/sol/hpack
 
 name:           diagnose
-version:        2.5.0
+version:        2.5.1
 synopsis:       Beautiful error reporting done easily
 description:    This package provides a simple way of getting beautiful compiler/interpreter errors
                 using a very simple interface for the programmer.

package.yaml

@@ -1,5 +1,5 @@
 name: diagnose
-version: 2.4.0
+version: 2.5.1
 github: "mesabloo/diagnose"
 license: BSD3
 author: "Ghilain Bergeron"

src/Error/Diagnose/Compat/Megaparsec.hs

@@ -47,7 +47,7 @@ diagnosticFromBundle ::
   MP.ParseErrorBundle s e ->
   Diagnostic msg
 diagnosticFromBundle isError code msg (fromMaybe [] -> trivialHints) MP.ParseErrorBundle {..} =
-  foldl addReport def (toLabeledPosition <$> bundleErrors)
+  foldl addReport mempty (toLabeledPosition <$> bundleErrors)
   where
     toLabeledPosition :: MP.ParseError s e -> Report msg
     toLabeledPosition error =

src/Error/Diagnose/Compat/Parsec.hs

@@ -48,7 +48,7 @@ diagnosticFromParseError isError code msg (fromMaybe [] -> defaultHints) error =
   let pos = fromSourcePos $ PE.errorPos error
       markers = toMarkers pos $ PE.errorMessages error
       report = (if isError error then Err code msg else Warn code msg) markers (defaultHints <> hints (undefined :: Void))
-   in addReport def report
+   in addReport mempty report
   where
     fromSourcePos :: PP.SourcePos -> Position
     fromSourcePos pos =