Just for the record, the increased CMake version requirement is not met on Ubuntu bionic. https://launchpad.net/ubuntu/+source/cmake Only focal will be able to have geos backports via the UbuntuGIS PPA. Kind Regards, Bas -- GPG Key ID: 4096R/6750F10AE88D4AF1 Fingerprint: 8182 DE41 7056 408D 6146 50D1 6750 F10A E88D 4AF1