# libtmux.common._no_version_flag_fallback

- **Module:** libtmux.common
- **Package:** libtmux
- **Language:** Python
- **Kind:** function
- **Source:** https://github.com/tmux-python/libtmux/blob/9fdd083a8181a827889337b63cd4e6daea661a8c/src/libtmux/common.py#L385
- **Page:** https://libtmux.org/en/py/latest/reference/libtmux-common-_no_version_flag_fallback/

```
libtmux.common._no_version_flag_fallback() -> str
```

Return a synthetic version string when tmux lacks ``-V``.

OpenBSD ships a ``-V``-less base tmux, so assume the maximum supported
version; any other platform is genuinely too old.