You need the Python bindings for notmuch. In Debian/Ubuntu, this is provided by the python3-notmuch package.
Fork the netviel backend and frontend:
And clone them to your computer.
Build it like so:
cd netviel && python3 -m pip install -e . --user
Install NVM:
wget -qO- https://raw.githubusercontent.com/nvm-sh/nvm/v0.35.3/install.sh | bash
(you can replace bash with your shell of choice.)
Then use NVM to install the latest NPM, and use it in the frontend directory you have cloned:
nvm install --latest-npm
cd netviel-frontend && npm install
Run the backend first:
cd netviel && export FLASK_DEBUG=1 && python3 -m netviel
(this avoids the need for admin rights). In a separate terminal, run the frontend:
cd netviel-frontend && npm run start
This will open a browser and fetch data from the local backend. Note that both run on localhost but the backend runs on port 5000 and the frontend on 8001.