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-rw-r--r--tvix/eval/src/value/list.rs9
1 files changed, 9 insertions, 0 deletions
diff --git a/tvix/eval/src/value/list.rs b/tvix/eval/src/value/list.rs
index d5f7c8b2ba44..f9d85229410a 100644
--- a/tvix/eval/src/value/list.rs
+++ b/tvix/eval/src/value/list.rs
@@ -18,3 +18,12 @@ impl Display for NixList {
         f.write_str("]")
     }
 }
+
+impl NixList {
+    pub fn concat(&self, other: &Self) -> Self {
+        let mut lhs = self.clone();
+        let mut rhs = other.clone();
+        lhs.0.append(&mut rhs.0);
+        lhs
+    }
+}