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<@U01819B63HP> I have installed Xschem and Ngspice in a different directory than the system root for CentOS 7. Some of the schematics in the xschem_sky130 library have missing components, too. Do I need to install Xschem again, or is there a workaround?

you should run xschem from the xschem_sky130 directory. There is a xschemrc file. Edit this file and correct the path to reference the share/xschem/xschem_library directory, according to your xschem installation.

```append XSCHEM_LIBRARY_PATH /xschem/install/root/share/xschem/xschem_library```


If you did a full open_pdks install then create a directory, copy the xschemrc you find in .`../share/pdk/sky130A/libs.tech/xschem`
and adjust the `XSCHEM_LIBRARY_PATH` according to xschem install root.