In case someone on this list can do something about it: the paradigm of using emacs on Ubuntu has changed / is broken. The emacs / emacs-nox packages on all but the latest Ubuntu release appear to be empty.
https://packages.ubuntu.com/xenial/all/emacs/filelist
»
Ubuntu
»
Packages
»
xenial
»
emacs
»
all
» File list
File list of package
emacs
in
xenial
of architecture
all
/usr/share/doc/emacs/changelog.gz /usr/share/doc/emacs/copyright