xantares [1] filed a deletion request for mingw-w64-cblas [2]: It's part of the lapack archive now: https://projects.archlinux.org/svntogit/packages.git/tree/trunk/PKGBUI LD?h=packages/lapack I'll add the split package to mingw-w64-lapack xan. [1] https://aur.archlinux.org/account/xantares/ [2] https://aur.archlinux.org/pkgbase/mingw-w64-cblas/