Remove install dependency + support Python 3.9, 3.10

[minouHub]

This PR is to attempt to remove dependencies in the install of RADIS. Each push will be tested for one of the requirements of environment.yaml

• python=3.8 - required by vaex, see [FEATURE-REQUEST] Support Python 3.12 vaexio/vaex#2397
• cython
• pandas < 2.0 - solved in Make codebase Pandas 2.0-ready #641
• publib - Not possible with python>3.8
• progressbar2 - noted as needed by vaex, so it should be automatically managed by vaex (not us)

Also:

• add limit python<3.9 in setup.py for pip install

[erwanp]

Also upgrade publib dependency in requirements.txt to

publib>=0.4.0

I just published a new version of the package (https://pypi.org/project/publib/ ) that fixes a non compatibility with Matplotlib 3.8.0
due to matplotlib/matplotlib#26831

[erwanp]

Regarding the test failures, see my comment here: https://github.com/radis/radis/pull/633/files#r1555134045

[codecov-commenter]

Codecov Report

Merging #647 (7d8fcf0) into develop (f9eae74) will increase coverage by 0.01%.
The diff coverage is n/a.

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Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #647      +/-   ##
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+ Coverage    72.92%   72.94%   +0.01%     
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  Files          148      148              
  Lines        21066    21066              
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+ Hits         15363    15366       +3     
+ Misses        5703     5700       -3     

[erwanp]

therefore test on python>=3.11 or something?

[minouHub]

sorry I didn't get it.

[minouHub]

vaex is not compatible with python>3.8 (see original post). matplotlib==3.8 requires python>3.8, thus, we should hold this update for the moment

[minouHub]

@erwanp, waiting for your final review on this. I will try to sort the docs by tonight

[minouHub]

To summarize, when vaex will move to a higher python version we will be able to:

• remove the limit in python<3.9 in setup.py
• remove python=3.8 in environment.yml
• upgrade to publib>=0.4.0 in requirements.txt

[erwanp]

Which is actively being worked on : vaexio/vaex#2331 (@minouHub register to this PR to know when it is released)

[minouHub]

@erwanp did you change this PR name because you want to wait for vaex? I would have prefer to merge now and put the support of Python 3.11 on a to-do list

[erwanp]

@minouHub ok I updated the PR title

[HajimeKawahara]

@minouHub @erwanp

We have an installation problem because of

• add limit python<3.9 in setup.py for pip install

What is the reason for this restriction?

HajimeKawahara/exojax#481

[minouHub]

Hello,
This restriction is introduced because vaex cannot be installed with Python > 3.8. Before this PR, the limit was present in the conda requirements but not in pip. In other words, if you did that, the regular pip install failed, see below:

conda create --name test_radis python==3.9 # or anything above 3.9
conda activate test_radis
pip install radis

The problem was that the error message was hard to understand. With this requirement, it's clearer. In the past, you could somehow trick the install with the developer install pip -e . but this is not stable to my opinion.

The main strategy I applied was to wait for vaex to update their package. The alternative if that is a big problem for you is to revert this modification, but remains the installation problem.

[HajimeKawahara]

@minouHub Thanks. I see. The problem is that jax requires python >3.8. so, for us, it is a big problem. Can you revert this modification for a while if you do not have a big problem?

[minouHub]

oh wait .... it worked .... I'm trying a quick fix in #651. Will keep you updated

[HajimeKawahara]

Ah, I see. Thanks for the quick check!

[minouHub]

Hello,
Very sorry for the mess. Two mistakes on my side.

1. vaex is actually compatible with python 3.9 and 3.10. I don't understand how I missed that.
2. if vaex limits the python version, we don't need to state it on our side

[HajimeKawahara]

@minouHub thank you so much!

[erwanp]

2. if vaex limits the python version, we don't need to state it on our side

If and only if vaex is installed through Conda and not Pip on our side; which it is=> so all good. Well done for fixing it