# Runtime.install_dir
URL: https://lsd.tools/docs/api-runtime-install-dir
Updated: 2026-07-17

## Example

```python
from lsdtools import find_runtime

rt = find_runtime()
if rt:
    print(rt.install_dir)   # → C:\Program Files\LSD Desktop
```

## Notes

Always set on a discovered `Runtime` — it is the one required field the dataclass is built around.
The launcher and interpreter fields (`cli`, `gui`, `python`) may still be `None` when those files
aren't found inside the install dir.

## See also

**API:** [cli](/docs/api-runtime-cli) · [executable](/docs/api-runtime-executable) · [find_runtime](/docs/api-runtime-find-runtime)

**Guides:** [Install LSD](/docs/start-install)