protected function setProjectName() {
    $project_name = basename($this->getConfigValue('repo.root'));
    $project_yml = $this->getConfigValue('blt.config-files.project');
    $project_config = YamlMunge::parseFile($project_yml);
    $project_config['project']['machine_name'] = $project_name;
    YamlMunge::writeFile($project_yml, $project_config);
  }