I tried this on ppc64el and see this issue: 2017-09-21 20:07:06 DEBUG install Some packages could not be installed. This may mean that you have 2017-09-21 20:07:06 DEBUG install requested an impossible situation or if you are using the unstable 2017-09-21 20:07:06 DEBUG install distribution that some required packages have not yet been created 2017-09-21 20:07:06 DEBUG install or been moved out of Incoming. 2017-09-21 20:07:06 DEBUG install The following information may help to resolve the situation: 2017-09-21 20:07:06 DEBUG install 2017-09-21 20:07:06 DEBUG install The following packages have unmet dependencies: 2017-09-21 20:07:06 DEBUG install percona-xtradb-cluster-server-5.6 : Depends: libevent-2.1-6 (>= 2.1.8-stable) but it is not installable 2017-09-21 20:07:06 DEBUG install E: Unable to correct problems, you have held broken packages. 2017-09-21 20:07:06 DEBUG worker.uniter.jujuc server.go:178 running hook tool "juju-log" 2017-09-21 20:07:06 INFO juju-log Couldn't acquire DPKG lock. Will retry in 10 seconds
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