@User I have a friend interested in doing some custom transistor layouts on SKY130. Did the extraction issues with the deep n-well ever get fixed / is there a timeline on that?

It should be correct now. As of about two days ago with some more fixes that I pushed. Because it's so recent, it has been lightly tested, but so far it looks okay on the examples I've tested.

Cool. Thanks!

I can confirm that extraction now works for the circuit I submitted for MPW-5 (some hundreds of transistors including some deep n-wells). However, I still have to flatten the circuit prior to extraction. If I don't flatten the circuit I still get wrong extraction results. Here is the code I use for flattening (found somewhere here in the slack channels):

set NAME [cellname list self]; select top cell; flatten "[list $NAME]_flat"; load "[list $NAME]_flat"; select top cell;