make Format derive Clone

1 files changed, 1 insertions, 1 deletions

diff --git a/src/lib.rs b/src/lib.rs
index 6b61dea..b622326 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -369,7 +369,7 @@ pub enum Validation {
     Format(#[cfg_attr(feature = "parse-knuffel", knuffel(arguments))] Vec<Format>),
 }
 
-#[derive(Debug, PartialEq, Eq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
 #[cfg_attr(feature = "parse-knuffel", derive(DecodeScalar))]
 pub enum Format {
     DateTime,