Pretty print exception in displayException

tweag · May 23, 2023 · 7e76dbc · 7e76dbc
1 parent 17ae060
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -4,6 +4,9 @@
   not mentioned in an existing cabal file. [Issue
   1032](https://github.com/tweag/ormolu/issues/1032)
 
+* Update `displayException` for `OrmoluException` to pretty print the
+  exception. [PR 1031](https://github.com/tweag/ormolu/pull/1031).
+
 ## Ormolu 0.7.0.0
 
 * Inference of operator fixity information is now more precise and takes

diff --git a/src/Ormolu/Exception.hs b/src/Ormolu/Exception.hs
@@ -47,7 +47,8 @@ data OrmoluException
     OrmoluFixityOverridesParseError (ParseErrorBundle Text Void)
   deriving (Show)
 
-instance Exception OrmoluException
+instance Exception OrmoluException where
+  displayException = T.unpack . runTermPure . printOrmoluException
 
 -- | Print an 'OrmoluException'.
 printOrmoluException ::