To install the latest EVEREST release (2.0):
pip install everest-pipeline
Note that EVEREST depends on george, which requires the Eigen3 package. If you don't have Eigen3, follow the instructions here to get george set up.
You can also install the current development version of EVEREST from source:
git clone https://github.com/rodluger/everest
cd everest
python setup.py install --user
For more information on how to install and use EVEREST, please refer to the documentation. And if you're looking for the previous version of EVEREST, check out the latest v1 release.