User talk:Houseofsuns

Applicability
The BLAS and LAPACK stack in the science overlay are incompatible with the BLAS and LAPACK stack from the main tree. If you want to use the version from the science overlay you will have to migrate your installation.

If you see random packages fail to configure with problems finding BLAS and LAPACK you probably have already pulled in the science stack.

Migration
First step is to mask the packages from the main tree which could interfere. Append the following to /etc/portage/package.mask to get them out of your system.

Now we need to install form science overlay, which manages the new stack.

Now we need to move all libraries to their version from the science overlay. The following uses to find out which these are.

We disabled the preserve-libs feature so that it does not preserve something we want to get rid of. This may break some reverse-dependencies so we need to fix this up.

At this point you should be migrated to the science overlay. If something goes wrong look at the next section for hints. If there is a gap in this migration guide, please write an [mailto:sci@gentoo.org email].

Possible Pitfalls
If you tried the above but had preserve-libs enabled you will need to remove libblas.so and run revdep-rebuild to get rid of it.