code: def platform(cls):
          
          system_name = platform.system()
          if system_name == "Linux":
              libc = cls.libc()
              return "unknown-linux-{libc}".format(libc=libc)
          elif system_name == "Darwin":
              return "apple-darwin"
          else:
              return "unknown"
docs: What Operating System (and sub-system like glibc / musl)