@User: These are not DRC errors, they are errors in accessing the library, which indicate, as it says, that a DEF file was read in without first reading the LEF file containing the standard cell macros.

Here I am looking at the spm.drc.mag layout. I am viewing it through this command:

magic -T ../../../../../../../pdks/sky130A/libs.tech/magic/sky130A.tech lef read ../../tmp/merged.lef def read spm.drc.mag

. It has 1057 drc errors. Looking at them I see that they are all the same as mentioned here: Error area #2: Local interconnect minimum area < 0.0561um^2 (li.6)

@Aireen Amir Jalal: Can you zoom in one one of the errors (in magic, "drc find" followed by "findbox zoom", although then you will want to zoom out a bit for context)? This sounds like a "false positive" related to the way the libraries are read in from LEF, but I'd like to see what is being flagged.

Sure. Here is the zoomed in image.

@Aireen Amir Jalal: Are you running on CentOS, by any chance? It appears that this problem is both randomly-occurring and OS-dependent. I'm looking into a fix.

No I'm running it on Ubuntu.