Hello Tiago,
I don't believe the hardware requirements have changed from xenial to bionic.
That was just a guess. I have really no idea why the upgrade didn't work.
It's out of my hands. That release is frozen in time, and it includes only GCC 5, where we need version 7 or above.
OK, I see. I will then simply work with the frozen version of graph-tool which I currently have on that computer. Thanks again for your help and for providing graph-tool! Best regards Rolf -- ----------------------------------------------------------------------- Rolf Sander phone: [+49] 6131/305-4610 Max-Planck Institute of Chemistry email: rolf.sander@mpic.de PO Box 3060, 55020 Mainz, Germany homepage: www.rolf-sander.net ----------------------------------------------------------------------- https://www.encyclopedia-of-geosciences.net https://www.geoscientific-model-development.net -----------------------------------------------------------------------