id,node_id,number,title,user,state,locked,assignee,milestone,comments,created_at,updated_at,closed_at,author_association,active_lock_reason,draft,pull_request,body,reactions,performed_via_github_app,state_reason,repo,type
1352445128,I_kwDOAMm_X85QnKzI,6957,import xarray fails with numpy 1.20.x,32060225,closed,0,,,2,2022-08-26T15:52:07Z,2022-08-26T16:37:09Z,2022-08-26T16:37:08Z,NONE,,,,"### What happened?

After installing xarray version 2022.6.0 (currently the latest one) via `pip install xarray`:
```
$ python -c ""import xarray; print(xarray.__version__)""
Traceback (most recent call last):
  File ""<string>"", line 1, in <module>
  File ""/packages/xarray/xa/lib/python3.9/site-packages/xarray/__init__.py"", line 1, in <module>
    from . import testing, tutorial
  File ""/packages/xarray/xa/lib/python3.9/site-packages/xarray/testing.py"", line 9, in <module>
    from xarray.core import duck_array_ops, formatting, utils
  File ""/packages/xarray/xa/lib/python3.9/site-packages/xarray/core/duck_array_ops.py"", line 26, in <module>
    from . import dask_array_compat, dask_array_ops, dtypes, npcompat, nputils
  File ""/packages/xarray/xa/lib/python3.9/site-packages/xarray/core/npcompat.py"", line 72, in <module>
    _SupportsDType[np.dtype],
  File ""/x86_64/anaconda/3/2021.11/lib/python3.9/typing.py"", line 275, in inner
    return func(*args, **kwds)
  File ""/x86_64/anaconda/3/2021.11/lib/python3.9/typing.py"", line 999, in __class_getitem__
    _check_generic(cls, params, len(cls.__parameters__))
  File ""/x86_64/anaconda/3/2021.11/lib/python3.9/typing.py"", line 209, in _check_generic
    raise TypeError(f""{cls} is not a generic class"")
TypeError: <class 'numpy.typing._dtype_like._SupportsDType'> is not a generic class
```

My environment includes numpy 1.20.3 which satisfies the minimal requirements in [setup.cfg](https://github.com/pydata/xarray/blob/4ad706fc4ef102c525555d55b20bc7ccc72d7045/setup.cfg#L78). On the other hand, updating it to version 1.21.0 or downgrading it to 1.19.0 solves the problem.

### What did you expect to happen?

Successful import of xarray

### Minimal Complete Verifiable Example

```Python
python -m venv test
source test/bin/activate
pip install numpy==1.20.0
pip install xarray==2022.06.0
python -c ""import xarray""
```


### MVCE confirmation

- [X] Minimal example — the example is as focused as reasonably possible to demonstrate the underlying issue in xarray.
- [X] Complete example — the example is self-contained, including all data and the text of any traceback.
- [ ] Verifiable example — the example copy & pastes into an IPython prompt or [Binder notebook](https://mybinder.org/v2/gh/pydata/xarray/main?urlpath=lab/tree/doc/examples/blank_template.ipynb), returning the result.
- [ ] New issue — a search of GitHub Issues suggests this is not a duplicate.

### Relevant log output

_No response_

### Anything else we need to know?

_No response_

### Environment

<details>



</details>
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