gatling_env :: %Gatling.Env{available_port: term, available_tasks: term, build_dir: term, built_release_path: term, deploy_callback_module: term, deploy_dir: term, deploy_path: term, domains: term, etc_dir: term, etc_path: term, git_hook_path: term, nginx_available_path: term, nginx_dir: term, nginx_enabled_path: term, nginx_template: term, project: term, release_config_path: term, releases: term, script_template: term, upgrade_callback_module: term, upgrade_dir: term, upgrade_path: term, version: term}

project :: binary