install cling jupyter kernel

run.sh

# see https://blog.jupyter.org/interactive-workflows-for-c-with-jupyter-fe9b54227d92
# tested with python 3.8
git config --global http.sslCAInfo /etc/ssl/certs/ca-certificates.crt
pip install jupyter
# read:
# https://unix.stackexchange.com/a/442517
# https://github.com/conda/conda/issues/10431
sudo dpkg-reconfigure dash
file /bin/sh # /bin/sh must be symbolic link to bash
wget https://repo.anaconda.com/miniconda/Miniconda3-py38_4.10.3-Linux-x86_64.sh
sh Miniconda3-py38_4.10.3-Linux-x86_64.sh
cat >> ~/.condarc << EOF
auto_activate_base: false
proxy_servers:
    http: 127.0.0.1:8088
    https: 127.0.0.1:8088
ssl_verify: /etc/ssl/certs/ca-certificates.crt
EOF
conda config --set auto_activate_base false
conda update conda -y
conda install -y ipython jupyter
conda install nb_conda -c conda-forge
pip3 install jupyterlab
jupyter serverextension enable --py jupyterlab 
# jupyter lab --no-browser # command starts JupyterLab
pip install https://github.com/ipython-contrib/jupyter_contrib_nbextensions/tarball/master
jupyter contrib nbextension install --user
# make virtual environment and activate
conda create -n xeus-cling
conda activate xeus-cling
#  install xeus-cling package
wget https://conda.anaconda.org/conda-forge/noarch/notebook-6.4.5-pyha770c72_0.tar.bz2
conda install --offline notebook-6.4.5-pyha770c72_0.tar.bz2
conda config --prepend channels \
  https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free
conda config --prepend channels \
  https://public.dhe.ibm.com/ibmdl/export/pub/software/server/ibm-ai/conda/
conda config --prepend channels \
  https://opence.mit.edu
# conda install cling -c conda-forge/label/gcc7
conda install xeus-cling notebook -c conda-forge/label/gcc7
# Read https://xeus-cling.readthedocs.io/en/latest/installation.html#installing-the-kernel-spec
find $HOME/miniconda3/ -name xcpp11
jupyter kernelspec install $HOME/miniconda3/pkgs/xeus-cling-0.13.0-h560cc44_1/share/jupyter/kernels/xcpp11 --user
jupyter kernelspec install $HOME/miniconda3/pkgs/xeus-cling-0.13.0-h560cc44_1/share/jupyter/kernels/xcpp14 --user
jupyter kernelspec install $HOME/miniconda3/pkgs/xeus-cling-0.13.0-h560cc44_1/share/jupyter/kernels/xcpp17 --user
jupyter kernelspec list
jupyter lab --no-browser # command starts JupyterLab
# Read https://learnopencv.com/xeus-cling-run-c-code-in-jupyter-notebook/
# The notebook server will start running on your localhost. Next, create a new Jupyter Notebook and select C++11 kernel.

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