That looks interesting, but ideally it would be something that works with multiple processes. Imagine opening a command prompt, launching vscode from it and doing a yarn/npm/nuget/pip install; this craps thousands of files for various "caches" and unconfigurable "install roots" and so on. I think a light-weight Docker for Windows would be great for this actually, but even a simple solution that builds on top of container.dll (or similar technology) to virtualize the file system would be very welcome.