1 files changed, 12 insertions, 10 deletions
diff --git a/tvix/serde/src/de.rs b/tvix/serde/src/de.rs
index 0999e8a60368..2f7b2ba4d66d 100644
--- a/tvix/serde/src/de.rs
+++ b/tvix/serde/src/de.rs
@@ -225,14 +225,14 @@ impl<'de> de::Deserializer<'de> for NixDeserializer {
     where
         V: de::Visitor<'de>,
     {
-        todo!("how to represent this?");
+        unimplemented!()
     }
 
     fn deserialize_byte_buf<V>(self, visitor: V) -> Result<V::Value, Self::Error>
     where
         V: de::Visitor<'de>,
     {
-        todo!("how to represent this?");
+        unimplemented!()
     }
 
     // Note that this can not distinguish between a serialisation of
@@ -261,24 +261,24 @@ impl<'de> de::Deserializer<'de> for NixDeserializer {
 
     fn deserialize_unit_struct<V>(
         self,
-        name: &'static str,
+        _name: &'static str,
         visitor: V,
     ) -> Result<V::Value, Self::Error>
     where
         V: de::Visitor<'de>,
     {
-        todo!("how to represent this?");
+        self.deserialize_unit(visitor)
     }
 
     fn deserialize_newtype_struct<V>(
         self,
-        name: &'static str,
+        _name: &'static str,
         visitor: V,
     ) -> Result<V::Value, Self::Error>
     where
         V: de::Visitor<'de>,
     {
-        todo!("how to represent this?");
+        visitor.visit_newtype_struct(self)
     }
 
     fn deserialize_seq<V>(self, visitor: V) -> Result<V::Value, Self::Error>
@@ -296,23 +296,25 @@ impl<'de> de::Deserializer<'de> for NixDeserializer {
         Err(unexpected("list", &self.value))
     }
 
-    fn deserialize_tuple<V>(self, len: usize, visitor: V) -> Result<V::Value, Self::Error>
+    fn deserialize_tuple<V>(self, _len: usize, visitor: V) -> Result<V::Value, Self::Error>
     where
         V: de::Visitor<'de>,
     {
-        todo!()
+        // just represent tuples as lists ...
+        self.deserialize_seq(visitor)
     }
 
     fn deserialize_tuple_struct<V>(
         self,
-        name: &'static str,
+        _name: &'static str,
         len: usize,
         visitor: V,
     ) -> Result<V::Value, Self::Error>
     where
         V: de::Visitor<'de>,
     {
-        todo!()
+        // same as above
+        self.deserialize_seq(visitor)
     }
 
     fn deserialize_map<V>(self, visitor: V) -> Result<V::Value, Self::Error>