public function nuke() {
    $confirm = $this->confirm("This will destroy your VM, and delete all associated configuration. Continue?");
    if ($confirm) {
      $this->taskExecStack()
        ->exec("vagrant destroy")
        ->dir($this->getConfigValue('repo.root'))
        ->printOutput(TRUE)
        ->stopOnFail()
        ->run();
      $this->taskFilesystemStack()
        ->remove($this->projectDrupalVmConfigFile)
        ->remove($this->projectDrupalVmVagrantfile)
        // @todo More surgically remove drush.default_alias and drush.aliases.local values from this file
        // rather than overwriting it.
        ->remove($this->getConfigValue('blt.config-files.local'))
        ->run();
      $this->say("Your Drupal VM instance has been obliterated.");
      $this->say("Please run `blt vm` to create a new one.");
    }
  }