1 files changed, 6 insertions, 0 deletions
diff --git a/dhall/src/semantics/nze/env.rs b/dhall/src/semantics/nze/env.rs
index 5b036f0..241af40 100644
--- a/dhall/src/semantics/nze/env.rs
+++ b/dhall/src/semantics/nze/env.rs
@@ -86,3 +86,9 @@ impl<Type: Clone> ValEnv<Type> {
         }
     }
 }
+
+impl<'a> From<&'a NzEnv> for NzEnv {
+    fn from(x: &'a NzEnv) -> Self {
+        x.clone()
+    }
+}