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-rw-r--r--src/Pure.ml2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/Pure.ml b/src/Pure.ml
index 139b4c58..53c053b0 100644
--- a/src/Pure.ml
+++ b/src/Pure.ml
@@ -100,7 +100,7 @@ type ty =
polymorphic = false;
}]
-type field = { field_name : string; field_ty : ty } [@@deriving show]
+type field = { field_name : string option; field_ty : ty } [@@deriving show]
type variant = { variant_name : string; fields : field list } [@@deriving show]