calculate-overlay/profiles/default/package.mask

sci-libs/blas-reference
sci-libs/cblas-reference
sci-libs/lapack-reference

# mask portage wgetpaste
>app-text/wgetpaste-2.25-r4

# prevent automagic depends
sys-libs/db:6.0

# not compiled
=dev-db/myodbc-8.0.23
=media-libs/allegro-4.4.3.1
=sci-libs/cifparse-obj-7.105

# removed cool emoji
=media-fonts/noto-emoji-20201214

# no support in CDS yet
=net-dns/bind-9.16.12