I have an extracted spice file that has like 40 pins and trying to create that using https://xschem.sourceforge.io/stefan/xschem_man/tutorial_create_symbol.html seem like it would take me forever.

@tnt one problem with spice files is that a spice netlist does not provide any information about the direction of pins. CDL netlists in some cases provide this info as commented metadata, like:

.subckt tt_asw_1v8 VPWR ctrl mod bus VGND

`.PININFO VPWR:B VGND:B mod:B bus:B ctrl:I`*

XM4 tgon tgon_n VGND VGND sky130_fd_pr__nfet_01v8 L=0.15 W=1.5 nf=1 m=1

XM3 tgon tgon_n VPWR VPWR sky130_fd_pr__pfet_01v8 L=0.15 W=3 nf=2 m=1

XM2 tgon_n ctrl VGND VGND sky130_fd_pr__nfet_01v8 L=0.15 W=1.5 nf=1 m=1

XM1 tgon_n ctrl VPWR VPWR sky130_fd_pr__pfet_01v8 L=0.15 W=3 nf=2 m=1

XM6 bus tgon mod VGND sky130_fd_pr__nfet_01v8_lvt L=0.5 W='12 * 4 ' nf=4 m=1

XM5 bus tgon_n mod VPWR sky130_fd_pr__pfet_01v8_lvt L=0.5 W='21 * 7 ' nf=7 m=1

.ends

in the xschem installation (

.../share/xschem/make_sym_from_spice.awk

) there is a script. Given a spice netlist containing one or more subckts it will create the related sym files:

.../.../make_sym_from_spice.awk opamp.spice

if

opamp.spice

contains an

opamp

subcircuit a

opamp.sym

file will be created. However if netlist does not provide information on pin direction the symbols will be generated with all ports declared as '`inout`' and all on the right. You can quickly edit the symbol to reposition pins. see short video.