Yeah, theres no DRC or LVS in the open_pdks files. I use magic for that. The only DRC that matters for submissions through the shuttle program is the magic one. So I focus on that. I have scripts that pulls a cell from the GDS and runs DRC or LVS. The LVS one also generates a fresh netlist from xschem to compare against the magic extraction using netgen. You can see them here if you're interested: https://github.com/yrrapt/caravel_amsat_txrx_ic/blob/master/utils/run_drc.sh https://github.com/yrrapt/caravel_amsat_txrx_ic/blob/master/utils/run_lvs_pex.sh