dhall: BREAKING CHANGE update dhall config for 1.33+ compatibility

Since dhall 1.33.0 lang version the `Optional/fold` function is
removed from the language and can be replaced by the usage of the
`merge` function which now works on Optional values 🎉 since 1.29

https://github.com/dhall-lang/dhall-haskell/pull/1608

This new code is thus not compatible with versions of dhall
<1.29.0 (due to the new feature of the `merge` fonction).

1 files changed, 9 insertions, 15 deletions

diff --git a/dhall/server/service/plugin/correlationId.dhall b/dhall/server/service/plugin/correlationId.dhall
index d5d5928..41c5720 100644
--- a/dhall/server/service/plugin/correlationId.dhall
+++ b/dhall/server/service/plugin/correlationId.dhall
@@ -2,22 +2,16 @@ let Plugin = ./Plugin.dhall
 
 let config = ./Config.dhall
 
-in    λ(generator : Optional Text)
-    →   { name =
-            "correlation-id"
+in  λ(generator : Optional Text) →
+        { name = "correlation-id"
         , config =
             config.CorrelationId
-            { header_name =
-                "X-correl"
-            , echo_downstream =
-                True
-            , generator =
-                Optional/fold
-                Text
-                generator
-                Text
-                (λ(t : Text) → t)
-                "uuid#counter"
-            }
+              { header_name = "X-correl"
+              , echo_downstream = True
+              , generator =
+                  merge
+                    { None = "uuid#counter", Some = λ(x : Text) → x }
+                    generator
+              }
         }
       : Plugin