Hi Guix,

attached are three more patches to replace ATLAS with OpenBLAS in
python.scm.

I noticed that numpy also needs "lapack", because OpenBLAS is built with
"NO_LAPACK=1".  That's what the first patch is for.

This is also important for the second patch which makes python-scipy use
OpenBLAS and Lapack instead of ATLAS.

The final patch replaces "atlas" with "openblas" in the
python-scikit-learn package definition.

~~ Ricardo