Hi, To expand on Bas' answer I believe that this is related to the fact that somehow Kwant has not been linked correctly against system libraries.
Indeed Bas' solution to use 'conda' may be the quickest way to get kwant working (if you already have a working Anaconda installation), however we would still like to find the root cause of this. Can you give details of how you built/installed Kwant on your system? Regards, Joe
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