@User @User In last commit of the xschem_sky130 device symbols mosfets have only a 'mult' parameter, however when creating the netlist transistor instance will have m= and mult=:

XM1 net1 G1v8 S B sky130_fd_pr__nfet_01v8_lvt W=1 L=0.15 ad='W * 0.29' pd='2 * (W + 0.29)' as='W * 0.29'
+ ps='2 * (W + 0.29)' nrd='0.29 / W' nrs='0.29 / W' sa=0 sb=0 sd=0 nf=1 mult=1 m=1