gtk2-engines-equinox: No summary available for gtk2-engines-equinox in ubuntu zesty.
gtk2-engines-equinox-dbgsym: No summary available for gtk2-engines-equinox-dbgsym in ubuntu disco.
There is no current release of this source package
in The Wily Werewolf.
You can still report bugs, make translations, and so on,
but they might not be used until the package is published.