MarsSeed [1] filed a deletion request for opencblas [2]: This package has been obsoleted by repo's Jun 14 change when the full OpenBLAS-Lapack suite including its cblas component been published as the split package 'openblas' and 'blas-openblas'. The repo package uses the same build configuration for this component as this AUR package. Nothing depends specifically on the latter, only on cblas, which is also declared in the provides field of blas-openblas. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/opencblas/