I can request a specific version of tool and python when using uv's tool functionality, e.g.: uvx --python=3.10 --from="jupyterlab@4.0.10" jupyter-lab But I don't see a way to pin dependencies to make sure subsequent invocations will not silently auto-update (possibly breaking) something. The docs say: uvx will use the latest available version of the requested tool on the first invocation. After that, uvx will use the cached version of the tool unless a different version is requested, the cache is pruned, or the cache is refreshed. ...and apparently the cache can get refreshed without me asking for it explicitly, as I caught the above command suddenly reinstalling the tool instead of reusing an existing environment. For uv projects and scripts there's a lock command and related --frozen/--locked parameters, but nothing seems to be available for tools? I found some tangentially related issues (#5815, #10082), but nothing explicitly about this, so I feel I'm missing something obvious. Continue reading...
