All sorts of test scaffolding works now

orchid-extension/src/conv.rs

@@ -35,7 +35,7 @@ impl<A: AtomicFeatures> TryFromExpr for TypAtom<'_, A> {
 	async fn try_from_expr(expr: Expr) -> OrcRes<Self> {
 		match expr.atom().await {
 			Err(ex) => Err(err_not_atom(ex.data().await.pos.clone(), &ex.ctx().i).await.into()),
-			Ok(f) => match downcast_atom(f).await {
+			Ok(f) => match downcast_atom::<A>(f).await {
 				Ok(a) => Ok(a),
 				Err(f) => Err(err_type(f.pos(), &f.ctx().i).await.into()),
 			},