open-source-silicon.dev

Hi All,

I'm trying to make klayout drc from command line but I'm not sure which drc files use. For now I'm relying on precheck drc but I think the the others should be important as well.

Also, the drc file `klayout_gds_drc_check.py` holds a reference to the gf180mcu precheck drc in line 68:
```klayout_sky130A_mr_drc_script_path = Path(__file__).parent.parent.parent / "tech-files/gf180mcuD_mr.drc"```
Maybe I should change that to sky130A_mr.drc? That's the same to run the precheck drc directly?

`lvs_run.py` also has an error because it relies on `sky130.lvs` being on `$PDK_ROOT/$PDK`, not in libs.tech/lvs. For now the solution is use `sky130.lvs` .

<@U03B029DKU5> What precheck repo are you using?

The files with problems are not from the precheck repo, are from volare (open_pdks commit bdc9412b3e468c102d01b7cf6337be06ec6e9c9a).
The sky130 precheck file I'm using is <https://raw.githubusercontent.com/efabless/mpw_precheck/main/checks/tech-files/sky130A_mr.drc>

DRC and LVS is fine when using `sky130A_mr.drc` and `$(KLAYOUT_HOME)/lvs/sky130.lvs`

<@U03B029DKU5> thanks for reporting this. I’ll escalate the issue.