Imports
- github.com/juju/loggo
- launchpad.net/juju-core/environs
- launchpad.net/juju-core/environs/simplestreams
- launchpad.net/juju-core/environs/storage
- launchpad.net/juju-core/errors
- launchpad.net/juju-core/tools
- launchpad.net/juju-core/utils/set
- launchpad.net/juju-core/version