インストール
$ conda create -n rapids-25.04 -c rapidsai-nightly -c conda-forge -c nvidia \
cudf=25.04 python=3.12 'cuda-version>=12.0,<=12.8'
# To activate this environment, use
#
# $ conda activate rapids-25.04
#
# To deactivate an active environment, use
#
# $ conda deactivate
