chore(tvix/eval): implement improved Display for internal values r/4497

Having these visible more explicitly is useful while debugging.

Change-Id: I86b497883063d32792b635eb4514b7aeae484af4
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6164
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: grfn <grfn@gws.fyi>

1 files changed, 2 insertions, 1 deletions

diff --git a/tvix/eval/src/value/mod.rs b/tvix/eval/src/value/mod.rs
index 99eb4c657ba5..355678fb7496 100644
--- a/tvix/eval/src/value/mod.rs
+++ b/tvix/eval/src/value/mod.rs
@@ -116,7 +116,8 @@ impl Display for Value {
             )),
 
             // internal types
-            Value::AttrPath(_) | Value::Blackhole => f.write_str("internal"),
+            Value::AttrPath(_) => f.write_str("internal<attrpath>"),
+            Value::Blackhole => f.write_str("internal<blackhole>"),
         }
     }
 }