Installing ROOT and Jupyter for ROOTbook via Homebrew/Linuxbrew

Homebrew/Linuxbrew can install ROOT and Jupyter. But Homebrew uses venv to install Jupyter, which makes the use of ROOTbook a bit complicated.

Jupyter Notebook + ROOT

First, install ROOT and Jupyter. Additionally, the metakernel package is required for C++ notebooks.

Terminal

brew install jupyterlab root
pip3 install metakernel --no-dependencies  # many of the dependencies are in venv
pip3 install ipyparallel portalocker --no-dependencies  # not in venv

In practice, you may also want to install matplotlib etc. via pip3.

Then, make your customised root command:

.bashrc

root() {
  (
    brew=$(command -v brew)
    . $(brew --prefix root)/bin/thisroot.sh  # this changes $PATH
    export PATH=$($brew --prefix jupyterlab)/libexec/bin/:$PATH
    command root "$@"
  )
}

Run it.

Terminal

root --notebook --no-browser

Check if simple examples work, e.g.,

Jupyter (Python 3)

import ROOT
c = ROOT.TCanvas()
f = ROOT.TF1("f", "sin(x)/x", 0.0, 10.0);
f.Draw();
c.Draw();

Jupyter (ROOT C++)

TCanvas c;
TF1 f("f1", "sin(x)/x", 0.0, 10.0);
f.Draw();
c.Draw();

JupyterLab + ROOT

The command root --notebook in the above section creates a customised Jupyter configurations in ~/.rootnb. One can make use of it for JupyterLab:

.bashrc

rootlab() {
  JUPYTER_CONFIG_DIR=~/.rootnb JUPYTER_PATH=~/.rootnb jupyter lab "$@"
}

Terminal

rootlab --no-browser

Tested environment

CentOS 7 (x86_64)
root        6.20.02
jupyterlab  2.0.1
metakernel  0.24.3