Update Persistent language extensions in Person table code example

yesodweb · Apr 16, 2024 · 934297d · 934297d
1 parent 6fe17c6
commit 934297d
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/book/asciidoc/persistent.asciidoc b/book/asciidoc/persistent.asciidoc
@@ -337,6 +337,8 @@ pass it off to other Persistent functions.
 {-# LANGUAGE QuasiQuotes                #-}
 {-# LANGUAGE TemplateHaskell            #-}
 {-# LANGUAGE TypeFamilies               #-}
+{-# LANGUAGE StandaloneDeriving         #-}
+{-# LANGUAGE FlexibleInstances          #-}
 
 import           Control.Monad.IO.Class  (liftIO)
 import           Database.Persist