Can't import xesmf package using Google Colab

[ktcarr]

Related issues: see here and here.

Error message:

KeyError                                  Traceback (most recent call last)
[/usr/local/lib/python3.10/site-packages/esmpy/interface/loadESMF.py](https://q53thv21z3c-496ff2e9c6d22116-0-colab.googleusercontent.com/outputframe.html?vrz=colab_20240717-060213_RC00_653143945#) in <module>
     25 try:
---> 26     esmfmk = os.environ["ESMFMKFILE"]
     27 except KeyError:

8 frames
KeyError: 'ESMFMKFILE'

During handling of the above exception, another exception occurred:

ImportError                               Traceback (most recent call last)
ImportError: The esmf.mk file cannot be found. Pass its path in the ESMFMKFILE environment variable.

During handling of the above exception, another exception occurred:

ModuleNotFoundError                       Traceback (most recent call last)
[/usr/local/lib/python3.10/site-packages/xesmf/util.py](https://q53thv21z3c-496ff2e9c6d22116-0-colab.googleusercontent.com/outputframe.html?vrz=colab_20240717-060213_RC00_653143945#) in <module>
      8     import esmpy as ESMF
      9 except ImportError:
---> 10     import ESMF
     11 
     12 LON_CF_ATTRS = {'standard_name': 'longitude', 'units': 'degrees_east'}

ModuleNotFoundError: No module named 'ESMF'