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Extracting text labels as ports
Version 8.3.413
sky130A process. text exists on both text layers and port layers (not the same text, not the same underlying layer). Both the text on the text layer and the text on the port layer also have rectangular "pins" on the same layer. Both types of text (text layer and port layer) are extracted as ports.
Removing the polygons on the text layer prevents the text on the text layer from being extracted as ports.
So from what I can deduce, the tech file statements aren't working as expected.
layer m1 MET1,MET1TXT,MET1PIN
and-not MET1RES,MET1SHORT
labels MET1
labels MET1PIN port
labels MET1TXT text
I expect text on MET1PIN
to be ports and text on MET1TXT
not to be ports, but it appears that what determines whether or not gds text is considered a port or not is the presence of a polygon on the same layer as the text.