code: def sdist():
      ret = list()
      for p in pipcl.git_items(g_root):
          if p.startswith(
              (
                  "docs/",
                  "signatures/",
                  ".",
              )
          ):
              pass
          else:
              ret.append(p)
      tgz = get_mupdf_tgz()
      if tgz:
          ret.append((tgz, mupdf_tgz))
      return ret
  
imports: import glob
  import io
  import os
  import textwrap
  import time
  import platform
  import shlex
  import shutil
  import stat
  import subprocess
  import sys
  import tarfile
  import urllib.request
  import zipfile
  import pipcl
  import sys
label_desc: Use image node_id 21 for calling a global function with example usage: sdist() and returns: ret