1 files changed, 6 insertions, 0 deletions
diff --git a/tvix/eval/src/errors.rs b/tvix/eval/src/errors.rs
index 2b8ba8f963..ad4acd479e 100644
--- a/tvix/eval/src/errors.rs
+++ b/tvix/eval/src/errors.rs
@@ -6,6 +6,12 @@ pub enum ErrorKind {
         key: String,
     },
 
+    /// Attempted to specify an invalid key type (e.g. integer) in a
+    /// dynamic attribute name.
+    InvalidAttributeName {
+        given: &'static str,
+    },
+
     AttributeNotFound {
         name: String,
     },