docs: def FromCurrentSystem(cls):
      """Fill a Uname from the currently running platform."""
      uname = platform.uname()
      fqdn = socket.getfqdn()
      system = uname[0]
      architecture, _ = platform.architecture()
      if system == "Windows":
        service_pack = platform.win32_ver()[2]
        kernel = uname[3]  # 5.1.2600
        release = uname[2]  # XP, 2000, 7
        version = uname[3] + service_pack  # 5.1.2600 SP3, 6.1.7601 SP1
      elif system == "Darwin":
        kernel = uname[2]  # 12.2.0
        release = "OSX"  # OSX
        version = platform.mac_ver()[0]  # 10.8.2
      elif system == "Linux":
        kernel = uname[2]  # 3.2.5
        release = platform.linux_distribution()[0]  # Ubuntu
        version = platform.linux_distribution()[1]  # 12.04
  
      # Emulate PEP 425 naming conventions - e.g. cp27-cp27mu-linux_x86_64.
      if pep425tags:
        pep425tag = "%s%s-%s-%s" % (
            pep425tags.get_abbr_impl(), pep425tags.get_impl_ver(),
            str(pep425tags.get_abi_tag()).lower(), pep425tags.get_platform())
      else:
        # For example: windows_7_amd64
        pep425tag = "%s_%s_%s" % (system, release, architecture)
  
      return cls(
          system=system,
          architecture=architecture,
          release=release,
          version=version,
          machine=uname[4],  # x86, x86_64
          kernel=kernel,
          fqdn=fqdn,
          pep425tag=pep425tag,
      )