@User @User shared his lib in bug #288 if that helps

Yes I did the same modification like this: (sky130_fd_sc_hd__tt_025C_1v80.lib) … voltage_map(“VNB”, 0.0000000000)   voltage_map(“VPB”, 1.8000000000); … pg_pin (“VNB”) {       pg_type : “pwell”;       physical_connection : “device_layer”;                          voltage_name : “VNB”;                                }     pg_pin (“VPB”) {       pg_type : “nwell”;       physical_connection : “device_layer”;                          voltage_name : “VPB”; …. but seems doesn’t fix the problem(?), here is the warnings: connect(1): no such node Tile_X1Y1_LUT4AB/Inst_LUT4AB_switch_matrix/_2307_/VGND connect(1): no such node Tile_X1Y1_LUT4AB/Inst_LUT4AB_switch_matrix/_2307_/VNB … WARNING: missing bias (6) /Tile_X1Y2_LUT4AB/Inst_LUT4AB_switch_matrix/_2347_/VNB at (sky130_fd_sc_hd__a32o_4)/MMNA0 WARNING: missing bias (6) /Tile_X1Y2_LUT4AB/Inst_LUT4AB_switch_matrix/_2347_/VPB at (sky130_fd_sc_hd__a32o_4)/MMPA0 … So, I’m not sure whether the tool recognize those power/bias pins and do the mapping/routing for them?