Virtual package libblas.so is provided by:
dpkg-query: no packages found matching libblis-openmp-dev dpkg-query: no packages found matching libblis-pthread-dev dpkg-query: no packages found matching libblis-serial-dev ||/ Name Version Architecture +++-=============================-===========-==================================== ii libatlas-base-dev:amd64 3.10.3-13 amd64 Automatically Tuned Linear Algebra Software, generic static ii libblas-dev:amd64 3.11.0-2 amd64 Basic Linear Algebra Subroutines 3, static library un libopenblas-openmp-dev <none> <none> (no description available) ii libopenblas-pthread-dev:amd64 0.3.21+ds-4 amd64 Optimized BLAS (linear algebra) library (dev, pthread) un libopenblas-serial-dev <none> <none> (no description available) 5 packages