No matter how hard I try, I cannot import ROOT from a conda installation of python.
Given the widespread use of conda as a python package manager, I think ROOT should have a working formula that allow users to use conda and pyROOT together.
Configuring CMake with
cmake -DPYTHON_EXECUTABLE=/home/eguiraud/Tools/miniconda2/bin/python path/to/root
and then building, this is what I get at python prompt:
It was suggested I should not source thisroot.sh (which is weird since most ROOT users just do it in their bashrc or anyway when they setup their working environment) and just export PYTHONPATH=$ROOTSYS/lib, but this yields similar results.