Hi Nyall, > Yep -- see e.g. > > Defining a new widget type: > https://github.com/nyalldawson/pyqgis/blob/master/processing/layout_algorithms.py#L67 > > > Using your custom widget in an algorithm: > > https://github.com/nyalldawson/pyqgis/blob/master/processing/layout_algorithms.py#L182 awesome, thanks! Matteo