Create a work-around for new installations due to fireworks

Fresh installations of vre-language / vre-middleware will sometimes not work. This error occurs:

AttributeError:
"safe_load()" has been removed, use

  yaml = YAML(typ='safe', pure=True)
  yaml.load(...)

instead of file "jupyter-base-2024-05-14/lib64/python3.9/site-packages/fireworks/utilities/fw_serializers.py", line 256

            dct = yaml.safe_load(f_str)

This issue has been solved in fireworks main branch but not yet released. See more discussions in this issue.

As a work-around vre-language tries to downgrade ruamel.yaml automatically. If downgrade of ruamel.yaml <0.18.0 is not possible, for example when the package is installed system-wide, another, non-automatic workaround has to be performed by the user. A fresh virtual environment has to be created (without fireworks, vre-language and vre-middleware). Then

python -m pip install git+https://github.com/materialsproject/fireworks.git
python -m pip install vre-language