So, I was thinking of taking a stab at optimizing the liberty.py script that generates liberty models. If anyone is interested I did a first profiling here https://gist.github.com/olofk/5393aa66f32590a12485085bff78b92a This is from running

python3 -m skywater_pdk.liberty libraries/sky130_fd_sc_hd/latest all

. Seems like the liberty_float thingie is the culprit here