Earlier quoted context omitted.
Which general purpose package manager works correctly on Windows (not WSL, actual Windows) and Linux? Cross-platform is more important than not creating another package manager. I think a far more interesting question is, does the package repository support falling back to e.g. curl. That would allow those who don't want another package manager to still use the registry.
You should distinguish between "can run on Windows" and "can manage Windows software as packages". Most package managers could probably run fine on Windows; at worst they could use cygwin or, indeed, WSL. Managing Windows software is much harder, but isn't necessary: This is a package manager for WebAssembly packages, not Windows packages or Linux packages. And anyway, wasmer itself doesn't even support Windows.
> wasmer itself doesn't even support Windows
First, it will: https://github.com/wasmerio/wasmer/issues/51#issuecomment-44...
Second, I write code that doesn't run on my terminal all the time, but I need the packages I'm using to be installed and versioned correctly.