diff --git a/tvix/eval/src/value.rs b/tvix/eval/src/value/mod.rs
similarity index 99%
rename from tvix/eval/src/value.rs
rename to tvix/eval/src/value/mod.rs
index a4656b1b9..7052df3d4 100644
--- a/tvix/eval/src/value.rs
+++ b/tvix/eval/src/value/mod.rs
@@ -1,10 +1,11 @@
 //! This module implements the backing representation of runtime
 //! values in the Nix language.
-
 use std::fmt::Display;
 
 use crate::errors::{Error, EvalResult};
 
+mod string;
+
 #[derive(Clone, Copy, Debug, PartialEq)]
 pub enum Value {
     Null,
diff --git a/tvix/eval/src/value/string.rs b/tvix/eval/src/value/string.rs
new file mode 100644
index 000000000..c123fc3ee
--- /dev/null
+++ b/tvix/eval/src/value/string.rs
@@ -0,0 +1,13 @@
+use std::fmt::Display;
+
+/// This module implements Nix language strings and their different
+/// backing implementations.
+
+#[derive(Debug, Hash, PartialEq)]
+pub struct NixString(String);
+
+impl Display for NixString {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.write_str(self.0.as_str())
+    }
+}