{"article":{"atomspec":["app-eselect\/eselect-blas","app-eselect\/eselect-cblas","app-eselect\/eselect-lapack","sci-libs\/blis","sci-libs\/flexiblas","sci-libs\/lapack","sci-libs\/mkl","sci-libs\/openblas","virtual\/blas","virtual\/cblas","virtual\/lapack","virtual\/lapacke"],"authoremail":"sam@gentoo.org","authorname":"Sam James","body":["Gentoo is adopting FlexiBLAS (sci-libs\/flexiblas) [0][1] as the primary way of switching BLAS implementations at runtime.","The previous eselect-based 'eselect-blas', 'eselect-cblas', and 'eselect-lapack' approach will be phased out in favor of this because of various reliability problems we hit.","The defaults in profiles will change shortly for stable users. For ~arch users, the default was changed a little while ago.","Action required ---------------","Please check your configuration for any stale references to eselect-ldso:","    $ grep -rsin eselect-ldso \/etc\/portage","and drop any reference to to it in make.conf USE or package.use.","Please also deselect the relevant packages from world:","    $ emerge --deselect app-eselect\/eselect-blas app-eselect\/eselect-cblas     $ emerge --deselect app-eselect\/eselect-lapack","Then complete a world upgrade and depclean:","    $ emerge -a -uvDU @world     $ emerge -ac","Using flexiblas ---------------","Most users do not need to worry about this and the defaults will be fine.","For users that want to, FlexiBLAS allows both system-wide and per-user configuration and supersedes the functionality from the old setup. Please refer to the flexiblas(1) man page for details."],"newsid":"2025-11-30-flexiblas-migration","posted":"2025-11-30","title":"FlexiBLAS migration imminent","urls":["https:\/\/public-inbox.gentoo.org\/gentoo-dev\/db65740b619e7b2413ac2b4b06f94db960f3e46e.camel@gentoo.org\/","https:\/\/bugs.gentoo.org\/963034"]}}