issue_comments: 962958896

I'm getting a similar issue with xarray=0.20.1 when rioxarray and rasterio are both installed, looks like #5931 didn't fully fix things? Here's the full traceback.

```python-traceback __ testopen_variable_filter[open_rasterio_engine] ___

open_rasterio = <function open_rasterio_engine at 0x7fa99ca7ec10>

def test_open_variable_filter(open_rasterio):

  with open_rasterio(
        os.path.join(TEST_INPUT_DATA_DIR, "PLANET_SCOPE_3D.nc"), variable=["blue"]
    ) as rds:

test/integration/test_integration__io.py:185:

---

test/conftest.py:103: in open_rasterio_engine return xr.open_dataset(file_name_or_object, engine="rasterio", **kwargs) ../../../miniconda3/envs/rioxarray/lib/python3.9/site-packages/xarray/backends/api.py:481: in open_dataset backend = plugins.get_backend(engine) ../../../miniconda3/envs/rioxarray/lib/python3.9/site-packages/xarray/backends/plugins.py:158: in get_backend engines = list_engines() ../../../miniconda3/envs/rioxarray/lib/python3.9/site-packages/xarray/backends/plugins.py:103: in list_engines return build_engines(entrypoints) ../../../miniconda3/envs/rioxarray/lib/python3.9/site-packages/xarray/backends/plugins.py:92: in build_engines entrypoints = remove_duplicates(entrypoints)

---

entrypoints = [EntryPoint(name='rasterio', value='rioxarray.xarray_plugin:RasterioBackend', group='xarray.backends'), EntryPoint(nam...rray.backends'), EntryPoint(name='rasterio', value='rioxarray.xarray_plugin:RasterioBackend', group='xarray.backends')]

def remove_duplicates(entrypoints):
    # sort and group entrypoints by name
    entrypoints = sorted(entrypoints, key=lambda ep: ep.name)
    entrypoints_grouped = itertools.groupby(entrypoints, key=lambda ep: ep.name)
    # check if there are multiple entrypoints for the same name
    unique_entrypoints = []
    for name, matches in entrypoints_grouped:
        matches = list(matches)
        unique_entrypoints.append(matches[0])
        matches_len = len(matches)
        if matches_len > 1:

          selected_module_name = matches[0].module_name

E AttributeError: 'EntryPoint' object has no attribute 'module_name'

../../../miniconda3/envs/rioxarray/lib/python3.9/site-packages/xarray/backends/plugins.py:29: AttributeError ================================ warnings summary ================================= test/integration/test_integration__io.py::test_open_variable_filter[open_rasterio] /home/username/projects/rioxarray/rioxarray/_io.py:366: DeprecationWarning: string or file could not be read to its end due to unmatched data; this will raise a ValueError in the future. new_val = np.fromstring(value.strip("{}"), dtype="float", sep=",")

-- Docs: https://docs.pytest.org/en/stable/warnings.html ============================= short test summary info ============================= FAILED test/integration/test_integration__io.py::test_open_variable_filter[open_rasterio_engine] !!!!!!!!!!!!!!!!!!!!!!!!!!!! stopping after 1 failures !!!!!!!!!!!!!!!!!!!!!!!!!!!!

```

Output of xr.show_versions()

``` INSTALLED VERSIONS ------------------ commit: None python: 3.9.7 | packaged by conda-forge | (default, Sep 29 2021, 19:20:46) [GCC 9.4.0] python-bits: 64 OS: Linux OS-release: 5.10.0-8-amd64 machine: x86_64 processor: byteorder: little LC_ALL: None LANG: en_NZ.UTF-8 LOCALE: ('en_NZ', 'UTF-8') libhdf5: 1.12.1 libnetcdf: 4.8.1 xarray: 0.20.1 pandas: 1.3.4 numpy: 1.21.4 scipy: 1.7.1 netCDF4: 1.5.8 pydap: None h5netcdf: None h5py: None Nio: None zarr: None cftime: 1.5.1.1 nc_time_axis: None PseudoNetCDF: None rasterio: 1.2.10 cfgrib: None iris: None bottleneck: None dask: 2021.11.0 distributed: 2021.11.0 matplotlib: None cartopy: None seaborn: None numbagg: None fsspec: 2021.11.0 cupy: None pint: None sparse: None setuptools: 58.5.3 pip: 21.3.1 conda: None pytest: 6.2.5 IPython: None sphinx: 1.8.5 ```