def _format_first_text(self, txt: str) -> str:
        """
        Format the enabled/disabled text (aka first_text).
        """
        return txt.format(
            brightness=self.brightness,
            temperature=self.temperature,
            gamma_red=self.gamma_red,
            gamma_green=self.gamma_green,
            gamma_blue=self.gamma_blue,
            is_enabled=self.is_enabled,
        )

        Format the enabled/disabled text (aka first_text).
        
libqtile/widget/redshift.py