Missing derivatives for asarray

[Gattocrucco]

import autograd
def f(x):
    return autograd.numpy.asarray(x)
g = autograd.elementwise_grad(f)
g(autograd.numpy.arange(3))

Error:

NotImplementedError: VJP of asarray wrt argnums (0,) not defined

Fix:

autograd.extend.defvjp(
    autograd.numpy.asarray,
    lambda ans, *args, **kw: lambda g: g
)

Python version:

Python 3.8.2 (v3.8.2:7b3ab5921f, Feb 24 2020, 17:52:18) 
[Clang 6.0 (clang-600.0.57)] on darwin

Autograd version: 1.3 (installed with pip)

[Gattocrucco]

In hindsight I understand why the derivatives of asarray are not defined by default, it is because array does additional stuff like searching for boxes in the arguments and it wouldn't be obvious if asarray does the same or not.