Anybody have an analog or mixed-signal repo with a functioning build and test scripts? Can't get @Soumil Jain’s crossbar project to work.

I suggest https://github.com/iic-jku/ (Harald Pretl's group at Johanes Kepler University in Austria). There are a number of projects there; the SAR-ADC is a good one to look at.

SKY130_SAR-ADC1 lives! I saw the dead one and thought it didn't exist. Wonderful!