Comment 44 for bug 1727355

Robie Basak and Andreas Hasenack have observed that the Breaks: from distro-info-data are against the wrong package: juju-core is built from juju-1 source and there is no newer version of this binary package in xenial which is not affected by the Breaks:, resulting in distro-info-data being held back.

distro-info-data needs a versioned breaks against the juju-2 binary package instead.