1 files changed, 5 insertions, 0 deletions
diff --git a/tvix/eval/src/errors.rs b/tvix/eval/src/errors.rs
index fb9f3b6ec5..f7f64f4e68 100644
--- a/tvix/eval/src/errors.rs
+++ b/tvix/eval/src/errors.rs
@@ -14,6 +14,11 @@ pub enum Error {
         expected: &'static str,
         actual: &'static str,
     },
+
+    Incomparable {
+        lhs: &'static str,
+        rhs: &'static str,
+    },
 }
 
 impl Display for Error {