Uniformize environments and update dependencies

[aulemahal]

Pull Request Checklist:

• This PR addresses an already opened issue (for bug fixes / features)
  • This PR fixes #xyz
• (If applicable) Documentation has been added / updated (for bug fixes / features)
• HISTORY.rst has been updated (with summary of main changes)
  • Link to issue (:issue:number) and pull request (:pull:number) has been added

What kind of change does this PR introduce?

• Reorder the environment files to fit what's in setup.py (an alphabetical order)
• Remove fixes for esmpy 8.4, as xESMF 0.7 takes care of that (the pin is bumped).
• Add a (brand new!) fix for esmpy 8.4 to avoid installing packages with pip with running pip install -e . on xscen
• Remove numba for the envs, it is not a direct dep and the bug related to version 0.55 is caduc with 0.56.
• Uniformize the two envs : h5netcdf, pyarrow, fsspec

Does this PR introduce a breaking change?

No.

Other information:

This still install netCDF4 1.6.2, I'm not sure if this version has been fixed or not?

[aulemahal]

Well...
It works on my machine though...

[Zeitsperre]

Looks like an issue with ESMF?

[aulemahal]

Oh I see, I thought the test failures were because of my PR, but your PRs to main fix them, nice!

The RTD error seems to be related to this issue : conda-forge/esmf-feedstock#91 and the solution is to explicitly activate the env, which I don't think RTD does...

[aulemahal]

Related RTD issue is : readthedocs/readthedocs.org#4067. We will need to patch this environment variable in the code, I'll push something.

[Zeitsperre]

I'm just curious, but is there any way for us to manually restart the environment using the .readthedocs.yml? I.e.:

build:
  jobs:
    pre-build:
      - conda deactivate
      - conda activate xscen-env

[aulemahal]

Well, I thought of that and decided not to do it for 2 reasons:

• I didn't want to interfere with RTD's machinery.
• Can you call conda activate if you haven't called conda init ? Does RTD call the latter? I'm suspecting it doesn't and this is why the conventional activation mechanism isn't used.

[Zeitsperre]

That makes sense. Was just wondering. Your fix is clear enough for me. 👍