Here's the code:

github.com/tailscale/go... -- a Go module cache virtual filesystem (FUSE or WebDAV) with deduping

I think big techs strategy of just writing all its own internal tools and hosting it behind a corp network starts to make sense.

stderr can still be used for printf debugging? I also think there are debug like jsonrpc notifications the server can send to your editor. I do remember heavily investing in debug pages for Sourcegraph’s lsp-proxy. Leaning on some custom pages and go’s net/trace pkg