Use
git clone git@github.com:rdemaria/sixtracklib.git
pip install [--user] -e sixtracklib
To run the examples other libraries are needed: http://github.com/rdemaria/sixtracktools and http://github.com/rdemaria/pyoptics that can be installed in a similar way
A test suite can be run using
cd sixtracklib
pytest tests
A draft of the physics manual is being edited in https://www.overleaf.com/read/jsfjffbnvhvl