v0.2-verl-stable: `build backend is missing the 'build_editable' hook`

[Danau5tin]

Obtaining file:///mnt/storage/rllm_new_b/rllm
  Installing build dependencies ... done
  Checking if build backend supports build_editable ... done
ERROR: Project file:///mnt/storage/rllm_new_b/rllm has a 'pyproject.toml' and its build backend is missing the 'build_editable' hook. Since it does not have a 'setup.py' nor a 'setup.cfg', it cannot be installed in editable mode. Consider using a build backend that supports PEP 660.

After running:

git clone --recurse-submodules https://github.com/rllm-org/rllm.git 
cd rllm

git switch v0.2-verl-stable

conda create -n 02-rllm python=3.10
conda activate 02-rllm

# Install verl
bash verl/scripts/install_vllm_sglang_mcore.sh
pip install --no-deps -e ./verl

# Install rllm
pip install -e .

[jeffreysijuntan]

v0.2-verl-stable is a development branch and now integrated into v0.2, check out v0.2 and you should be able to install it there.