I haven't seen a virtual filesystem overlaid on top of a monorepo before, do you have any examples of what that looks like? Semi-related, I try to use symlink

I haven't seen a virtual filesystem overlaid on top of a monorepo before, do you have any examples of what that looks like? Semi-related, I try to use symlink shenanigans in git to share common files between monorepo projects w/o using 3rd party tooling, but my latest attempt worked on Windows but the symlink fell apart when the repo was pulled down on a Mac! Not the OS that I thought would have issues. :)