@User: Is this an error?: In xschemrc,

lappend tcl_files scripts/sky130_models.tcl

fails. It only works if I give it a full absolute path. It seems to me that for a relative path it should be checking

XSCHEM_LIBRARY_PATH

to find this.

Correct, in a final installation

tcl_files

should be a list of tcl scripts (example: ngspice backannotation) to load at startup. The

scripts/sky130_models.tcl

works when launching xschem from the directory where xschemrc is located. I did this to avoid specifying absolute paths (that depend on target system/installation). Another consideration:

tcl_files

is not related at all to

XSCHEM_LIBRARY_PATH

.

XSCHEM_LIBRARY_PATH

is used to find symbols / schematics by appending the reference found in the schematic to any paths in

XSCHEM_LIBRARY_PATH

until an existing file is found.