Howto use it? sorry for the noob question. I tried `uv --preview-features content-addressed-cache` and I get an error: `uv --preview-features content-addresse

Howto use it? sorry for the noob question. I tried `uv --preview-features content-addressed-cache` and I get an error: `uv --preview-features content-addressed-cache error: 'uv' requires a subcommand but one was not provided`