Introduce intermediate representation that stores typed expr

1 files changed, 1 insertions, 1 deletions

diff --git a/dhall/src/syntax/ast/expr.rs b/dhall/src/syntax/ast/expr.rs
index 170cbe7..f22a279 100644
--- a/dhall/src/syntax/ast/expr.rs
+++ b/dhall/src/syntax/ast/expr.rs
@@ -23,7 +23,7 @@ pub enum Const {
 /// The `Label` field is the variable's name (i.e. \"`x`\").
 /// The `Int` field is a DeBruijn index.
 /// See dhall-lang/standard/semantics.md for details
-#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub struct V<Label>(pub Label, pub usize);
 
 // Definition order must match precedence order for