While it doesn't make sense to install qubes-core-agent without qrexec,
it may make sense to do the otherway around - install just
qrexec-agent without all the qrexec services and configuration. For
example on some pre-installed system.
QubesOS/qubes-issues#2771
When a file is moved to other package, the new package needs Replaces:
and Breaks: dependecies on old package. Otherwise dpkg will refuse to
change file ownership.
QubesOS/qubes-issues#2771
This will save a lot of dependencies if networking is not needed in VMs
based on given template. Thanks to updates proxy over qrexec, template
itself do not need to have network configured too.
QubesOS/qubes-issues#2771
In Fedora it makes little sense, but in Debian it allows to avoid a lot
of dependencies. So split in both, to keep it simple.
QubesOS/qubes-issues#2771