def add_contents(self, dest, contents):
        """Add file contents to the archive under ``dest``.

        If ``dest`` is a path, it will be added compressed and world-readable
        (user-writeable). You may also pass a :py:class:`~zipfile.ZipInfo` for
        custom behavior.

        """
        assert not self._closed, "Archive closed"
        if not isinstance(dest, zipfile.ZipInfo):
            dest = zinfo(dest)  # see for some caveats
        # Ensure we apply the compression
        dest.compress_type = self.zip_compression
        # Mark host OS as Linux for all archives
        dest.create_system = 3
        self._zip_file.writestr(dest, contents)
Add file contents to the archive under ``dest``.

        If ``dest`` is a path, it will be added compressed and world-readable
        (user-writeable). You may also pass a :py:class:`~zipfile.ZipInfo` for
        custom behavior.