From what I can tell, this package appears to be a thin wrapper built on top of a two-year-old version of GDSFactory (v7).
Would you be open to porting this functionality directly into the current version of GDSFactory?
Doing so would allow it to benefit from the many improvements introduced since v7, including enhanced routing, simulation, and PCell support available in GDSFactory v9 (port visualization, metadata ...)