There is always something useful to learn, even if it's a mistake. pnpm in particular centralizes your packages, and symlinks them to each project that needs them, which cuts down on file copy and disk usage significantly. The same principle could be applied to cargo/rust, python venvs, dotnet, or even large C++ projects could improve their disk usage and file copy significantly if they followed the same idea. Why do you have to have a massive target folder in every rust project if all that could live in a hash addressable shared store. Its the same basic idea of CoW or deduping file systems, but done in the application for far better result.