feat(tvix/eval): impl Default for AttrsRep r/5355

Change-Id: I3a55413e5004777b90c06cd8655f26abb2faf39b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7448
Autosubmit: Adam Joseph <adam@westernsemico.com>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI

1 files changed, 7 insertions, 1 deletions

diff --git a/tvix/eval/src/value/attrs.rs b/tvix/eval/src/value/attrs.rs
index 1593ab19d3..fced32a865 100644
--- a/tvix/eval/src/value/attrs.rs
+++ b/tvix/eval/src/value/attrs.rs
@@ -33,6 +33,12 @@ enum AttrsRep {
     },
 }
 
+impl Default for AttrsRep {
+    fn default() -> Self {
+        AttrsRep::Empty
+    }
+}
+
 impl AttrsRep {
     /// Retrieve reference to a mutable map inside of an attrs,
     /// optionally changing the representation if required.
@@ -79,7 +85,7 @@ impl AttrsRep {
 }
 
 #[repr(transparent)]
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct NixAttrs(AttrsRep);
 
 impl TotalDisplay for NixAttrs {