Thanks, Benedict - the same solution worked for me. Specifically:
sudo apt-get install libopenblas-base- libopenblas-dev- \ libblas3 liblapack3 libblas-dev liblapack-dev Unfortunately julia and libjulia0.6 were also removed here, since they depend on libopenblas-base. I intend to report this as a bug, and request that they depend instead on the virtual packages libblas.so.3 and liblapack.so.3 (which can also be provided by liblapack3 and libblas3, resp.).