calculate-overlay/profiles/default/package.mask

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

# deprecated
sys-process/vixie-cron

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

# prevent automagic depends
sys-libs/db:6.0

=net-dns/bind-9.14.12

=dev-python/PyQt5-5.14.2-r1
=dev-python/PyQt5-sip-4.19.22-r1
=dev-python/sip-4.19.22-r1

# not supported gnome-extra/libgda-5.2.8-r1
=dev-libs/libxml2-2.9.10
=dev-libs/libxml2-2.9.10-r1
=dev-libs/libxslt-1.1.34