2 files changed, 17 insertions, 0 deletions
diff --git a/tvix/eval/src/value/mod.rs b/tvix/eval/src/value/mod.rs
index f6583db5ab97..eb23605bd0b2 100644
--- a/tvix/eval/src/value/mod.rs
+++ b/tvix/eval/src/value/mod.rs
@@ -80,6 +80,17 @@ impl Value {
         }
     }
 
+    pub fn as_str(&self) -> EvalResult<&str> {
+        match self {
+            Value::String(s) => Ok(s.as_str()),
+            other => Err(ErrorKind::TypeError {
+                expected: "string",
+                actual: other.type_of(),
+            }
+            .into()),
+        }
+    }
+
     pub fn to_string(self) -> EvalResult<NixString> {
         match self {
             Value::String(s) => Ok(s),
diff --git a/tvix/eval/src/value/string.rs b/tvix/eval/src/value/string.rs
index 51b0f0345457..65022b6cc49c 100644
--- a/tvix/eval/src/value/string.rs
+++ b/tvix/eval/src/value/string.rs
@@ -46,6 +46,12 @@ impl From<String> for NixString {
     }
 }
 
+impl From<SmolStr> for NixString {
+    fn from(s: SmolStr) -> Self {
+        NixString(StringRepr::Smol(s))
+    }
+}
+
 impl Hash for NixString {
     fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
         self.as_str().hash(state)