Linux: just for fun. Congrats to this release. I vividly remember playing all sorts of Linux games when I was younger. Helped me to feel not as lonely as I was.
You can even mmap a socket on some systems (iOS and macOS via GCD). But doing that is super fragile. Socket errors are swallowed.
My interpretation always was the mmap should only be used for immutable and local files. You may still run into issues with those type of files but it’s very unlikely.