CMSSW setup instructions broken for CMSSW_12_X_Y and later #196
Description
The setup instructions for CMSSW do not yield the desired python release (i.e. the one shipped with CMSSW) anymore after the switch to python3. One needs to explicitly choose python3 for the creation of the virtual environment.
The fix is to update the documentation to state this explicitly for CMSSW_12_X_Y and later:
virtualenv -p $(which python3) hepdata_lib_env