docs: def _lfs_add(files, git):
      """
      Add any oversized files with lfs.
      Throws error if a file is bigger than 2GB or git-lfs is not installed.
      """
      # Check for large files > 100 MB (and huge files > 2 GB)
      # https://help.github.com/articles/conditions-for-large-files/
      # https://help.github.com/articles/about-git-large-file-storage/
      larges, huges = [], []
      for file in files:
          size = os.path.getsize(file)
          if size > (100 * 1024 * 1024):
              larges.append(file)
          elif size > (2 * 1024 * 1024 * 1024):
              huges.append(file)
  
      # Raise Error if a file is >2GB
      if huges:
          raise Error(_("These files are too large to be submitted:\n{}\n"
                        "Remove these files from your directory "
                        "and then re-run {}!").format("\n".join(huges), org))
  
      # Add large files (>100MB) with git-lfs
      if larges:
          # Raise Error if git-lfs not installed
          if not shutil.which("git-lfs"):
              raise Error(_("These files are too large to be submitted:\n{}\n"
                            "Install git-lfs (or remove these files from your directory) "
                            "and then re-run!").format("\n".join(larges)))
  
          # Install git-lfs for this repo
          _run(git("lfs install --local"))
  
          # For pre-push hook
          _run(git("config credential.helper cache"))
  
          # Rm previously added file, have lfs track file, add file again
          for large in larges:
              _run(git("rm --cached {}".format(shlex.quote(large))))
              _run(git("lfs track {}".format(shlex.quote(large))))
              _run(git("add {}".format(shlex.quote(large))))
          _run(git("add --force .gitattributes"))