CastLike works with one type hack

extra/onnx_ops.py

@@ -151,3 +151,8 @@ def Tile(input, repeats):
 
 def Range(start, limit, delta): return Tensor.arange(safe_numpy(limit)[0], safe_numpy(start)[0], safe_numpy(delta)[0])
 def Where(condition, X, Y): return condition*X + (1-condition)*Y
+
+# NOTE: since we only have one type, this is valid!
+def CastLike(input, target_type):
+  assert isinstance(target_type, Tensor), "can only CastLike Tensor"
+  return input