max_name_len

pub const max_name_len = switch (native_os) {
    .linux => 15,
    .windows => 31,
    .macos, .ios, .watchos, .tvos, .visionos => 63,
    .netbsd => 31,
    .freebsd => 15,
    .openbsd => 23,
    .dragonfly => 1023,
    .solaris, .illumos => 31,
    // https://github.com/SerenityOS/serenity/blob/6b4c300353da49d3508b5442cf61da70bd04d757/Kernel/Tasks/Thread.h#L102
    .serenity => 63,
    else => 0,
}