[WIP] Modernize package with a pyproject.toml

[pradal]

Fix #270

[pradal]

@brichet

[brichet]

Thanks @pradal for working on this.
On my side I had to install some packages from PyPI and some from conda/mamba.

After a very quick test, I managed to make it work (for my use case only) with:

pip install -r requirements.txt
conda install -c openalea3 openalea.core openalea.deploy
pip install pyyaml legacy-cgi # those packages may be missing from requirements
pip install -e .

Is there a way to install openalea.core and openalea.deploy from PyPI ?
That would make PyCrop2ML only depends on PyPI packages, as far as I know.

[pradal]

Great!
deploy normally is not needed anymore.
You can retrieve openalea on our RC label :
mamba install -c openalea3/label/rc -copenalea3 -c conda-forge openalea.core

I have not tried to make openalea.core available on Pypi. But due to only pure Python deps, it can done.
I just do not master the workflow yet.
I will create an issue.

But you can test something like
pip install git+https://github.com/openalea/core

[brichet]

But you can test something like
pip install git+https://github.com/openalea/core

Works well 🎉