People that use GUIs/tools for things like ffmpeg, rclone etc really want the developer to autodetect if they have it already, and use that instead of installin

People that use GUIs/tools for things like ffmpeg, rclone etc really want the developer to autodetect if they have it already, and use that instead of installing a separate version/binary. How do I know? I built one (https://github.com/rclone-ui/rclone-ui https://github.com/rclone-ui/rclone-ui)