Hi @dambo
Thanks! Glad you liked it.
Can you please tell if you’re using a conda virtual environment for Xeus-Cling? If not, can you please try and install xeus-cling in a new virtual environment and double-check? I suspect the error might be because of the conflicts with existing libraries.
Also, if the above solution doesn’t work, I suggest changing set(TORCH_CXX_FLAGS "-D_GLIBCXX_USE_CXX11_ABI=")  to  set(TORCH_CXX_FLAGS "-D_GLIBCXX_USE_CXX11_ABI=1") and reload the libraries and header files. This, I suspect, might solve C++ ABI compatibility issue, if any.
Thanks!