local sys = require "sys"sys.os"linux", "macos" or "windows".
sys.arch"x86_64" or "aarch64".
sys.libc"musl" or "gnu". Note that libc is "lua" when using the pure Lua
implementation of LuaX.
sys.exeExtension of executable files on the platform ("" or ".exe").
sys.soExtension of shared libraries on the platform (".so", ".dylib" or
".dll").
sys.nameName of the platform.