On Wed, Jun 14, 2023 at 08:27:28PM -0000, Arch Linux: Recent news updates: Felix Yan wrote: > The openblas package prior to version 0.3.23-2 doesn't ship optimized > LAPACK routine and CBLAS/LAPACKE interfaces for compatibility. This > decision has been reverted now, and the ability to choose a different > default system BLAS/LAPACK implementation while keeping openblas > installed is now provided to allow future co-installation of BLIS, > ATLAS, etc. This must be the most confusing advice I ever got :-) As suggested, I tried: pacman -Syu blas-openblas which resulted in: :: Starting full system upgrade... resolving dependencies... looking for conflicting packages... :: blas-openblas and cblas are in conflict. Remove cblas? [y/N] n error: unresolvable package conflicts detected error: failed to prepare transaction (conflicting dependencies) :: blas-openblas and cblas are in conflict So what should I do if I want to keep cblas, lapack, numpy, scipy etc.. working ? Which blas is now 'the default one' ? TNX -- FA