rootpy and ROOT 6.18 about rootpy HOT 5 OPEN

although you can disable the new pyroot by using -Dpyroot_experimental=OFF but we would like to move forward with new pyroot and would like to get a version fo rootpy which works with it. Any plans to support the new pyroot? Otherwise I am afraid we have to drop rootpy from CMSSW software stack

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@zodiacfireworks
yes, that's because ROOT is moving on to new PyROOT for which they have enable building the new libs by default. You can see this comment from ROOT devs
cms-sw/cmsdist#5531 (comment)
on what has changed. You can also add this cmake flag:
-Dpyroot_experimental=OFF
to have the old lib version

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I was reading the existing issues and I think what you have is similar to my issue which you can read about here: cms-sw/cmsdist#5531 (comment)
in short you are probably building (installing) the newer pyroot libs instead of the old one. If you list your ROOTSYS/lib and there is not libPyROOT but libROOTTPython that is it

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Hi @mrodozov,

thanks for the tip.

I bumped into this problem when building ROOT from source indeed (new laptop, I wanted a fresh install), then I decided to take a different approach and install ROOT via conda and encapsulate it in a conda environment.

For the posterity, this worked with root 6.18.00

conda create -n alt_root python=3.7 root -c conda-forge
conda activate alt_root
conda config --env --add channels conda-forge
conda install -n alt_root root_numpy
conda install -n alt_root tensorflow -c conda-forge
conda install -n alt_root keras -c conda-forge
conda install -n alt_root matplotlib
conda install -n alt_root scikit-learn
python -m pip install rootpy --user

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Same issue here!

rootpy 1.0.1
ROOT 6.21/01

I have libROOTTPython, not libPyROOT :(

Any plan to update?
How I can help?

:)

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