old_contents: import os
  import sys
  
  import petname
  
  from conjureup import controllers, juju, utils
  from conjureup.app_config import app
  
  
  class CloudsController:
  
      def finish(self):
          if app.argv.cloud == "localhost":
              if not utils.check_bridge_exists():
                  back = "{} to localhost".format(app.argv.config['spell'])
                  os.execl("/usr/share/conjure-up/run-lxd-config",
                           "/usr/share/conjure-up/run-lxd-config",
                           back)
          if app.argv.controller:
              existing_controller = app.argv.controller
              if juju.get_controller(existing_controller) is None:
                  utils.error("Specified controller '{}' "
                              "could not be found in cloud '{}'.".format(
                                  existing_controller, app.argv.cloud))
                  sys.exit(1)
          else:
              existing_controller = juju.get_controller_in_cloud(app.argv.cloud)
  
          if existing_controller is None:
              return controllers.use('newcloud').render(app.argv.cloud)
  
          utils.info("Using controller '{}'".format(existing_controller))
  
          app.current_controller = existing_controller
          app.current_model = petname.Name()
          utils.info("Creating new juju model named '{}', "
                     "please wait.".format(app.current_model))
          juju.add_model(app.current_model, app.current_controller)
  
          return controllers.use('deploy').render()
  
      def render(self):
          if app.argv.cloud not in juju.get_clouds().keys():
              formatted_clouds = ", ".join(juju.get_clouds().keys())
              utils.warning(
                  "Unknown Cloud: {}, please choose "
                  "from one of the following: {}".format(app.argv.cloud,
                                                         formatted_clouds))
              sys.exit(1)
          utils.info(
              "Summoning {} to {}".format(app.argv.spell, app.argv.cloud))
          self.finish()
  
  
  _controller_class = CloudsController
  
new_contents: import sys
  
  import petname
  
  from conjureup import controllers, juju, utils
  from conjureup.app_config import app
  
  
  class CloudsController:
  
      def finish(self):
          if app.argv.controller:
              existing_controller = app.argv.controller
              if juju.get_controller(existing_controller) is None:
                  utils.error("Specified controller '{}' "
                              "could not be found in cloud '{}'.".format(
                                  existing_controller, app.argv.cloud))
                  sys.exit(1)
          else:
              existing_controller = juju.get_controller_in_cloud(app.argv.cloud)
  
          if existing_controller is None:
              return controllers.use('newcloud').render(app.argv.cloud)
  
          utils.info("Using controller '{}'".format(existing_controller))
  
          app.current_controller = existing_controller
          app.current_model = petname.Name()
          utils.info("Creating new juju model named '{}', "
                     "please wait.".format(app.current_model))
          juju.add_model(app.current_model, app.current_controller)
  
          return controllers.use('deploy').render()
  
      def render(self):
          if app.argv.cloud not in juju.get_clouds().keys():
              formatted_clouds = ", ".join(juju.get_clouds().keys())
              utils.warning(
                  "Unknown Cloud: {}, please choose "
                  "from one of the following: {}".format(app.argv.cloud,
                                                         formatted_clouds))
              sys.exit(1)
          utils.info(
              "Summoning {} to {}".format(app.argv.spell, app.argv.cloud))
          self.finish()
  
  
  _controller_class = CloudsController
  
subject: fix tui code path when checking lxd (#510)