Hi, do you know why this error ? This is model include:

-lib \\$::SKYWATER_MODELS\\/sky130.lib.spice ss

Don’t know if this is a tcl error or not, but you might try

$::env(SKYWATER_MODELS)

Also your inverter is from the

hvl

library, so make sure that’s the one you’re loading.

This is the result

Looks good, AFAICT.

Where is folder models inside ngspice folder of pdk?

you need to include standard cell spice file

.include /foss/pdks/sky130A/libs.ref/sky130_fd_sc_hvl/spice/sky130_fd_sc_hvl.spice

Okay thanks