apt-get will ask before package removal To continue type in the phrase 'Yes, do as I say!'.
Outcome:
Essential: yes however doesn’t work for that purpose. It results in installing package qubes-whonix-workstation on Qubes-Whonix-Gateway. Therefore I needed to git revert that commit.
This was undone. Because when adding Whonix repository and then using a multi strap (“debootstrap”) (such as mmdebstrap) it would by default install all of these essential packages which actually conflict with each other.