[ebuild  r  U ] gnome-extra/evolution-data-server-3.40.0 [3.38.4] USE="berkdb gnome-online-accounts gtk introspection ipv6 vala weather -gtk-doc -kerberos -ldap -oauth -test" 
[ebuild  rR   ] gnome-base/gnome-shell-3.38.4  USE="bluetooth browser-extension ibus networkmanager systemd (-elogind) -gtk-doc -telepathy -test" PYTHON_SINGLE_TARGET="python3_9 -python3_7 -python3_8" 

The following packages are causing rebuilds:

  (gnome-extra/evolution-data-server-3.40.0:0/62-26-20::gentoo, ebuild scheduled for merge) causes rebuilds for:
    (gnome-base/gnome-shell-3.38.4:0/0::gentoo, ebuild scheduled for merge)