Bc new users with fancy hw keep asking about it and i suppose once
we add support the project will prolly get popular with them "career
hackers" with "nice furniture" 😹

Immediately known issues

• our use of XDG_RUNTIME_DIR
  on linux in the UDS tpt backend
  for the selection of the UDSAddress.def_bindspace is problematic.

  • see this SO answer which
    indicates using DARWIN_USER_TEMP_DIR per,

    So the only difference is that Mac doesn't guarantee cleanup on
    log out. (For example, if you're putting a Unix domain socket
    in your runtime directory, when being portable to Mac you can't
    rely on that socket being automatically deleted for you if the
    user logs out but doesn't turn off their computer.)

  • ideally we use some (lib's) cross-platform approach for these
    kinds of problems? I know in the past i've copied
    click.utils.get_app_dir()
    impl for use, but not sure there's an equiv for all $XDG_ style
    vars?

• there's our outstanding list from long ago ,

  • Fix: Shorten shm_list key for osx #341
  • pretty sure @jaredgoldman had a fix for the posix shm
    file-name len problem, but we may have lost that history?
    Either way think a collab has generated a soln with ol claudy
    Bo

• we need to get Macos in ci #342 !!