@User if you are installing xschem as standalone and want to simulate with skywater you need to install xschem and xschem_sky130 from github and the skywater libraries and models. This video (or on ) explains the process. Alternatively you might want to install xchem as part of open_pdks.

Thank you for this video. I found it challenging to put all pieces together (pdk, tools, libraries...) and this video was very good guidance. I was wondering if the modification of the primitives library shown at 14:30 is still needed? (maybe the PDK got updated)

~For setting up xschem with ngspice on Mac OS, I found I needed to add some arguments to the configure command. They were: CFLAGS="-O2 -I/opt/X11/include/freetype2 -Wno-error=implicit-function-declaration" --x-includes=/opt/X11/include --x-libraries=/opt/X11/lib The entire string was: ./configure --enable-cider --enable-xspice --enable-openmp --enable-pss --enable-debug=no --prefix=/<path to>/ngspice-macos --enable-openmp CFLAGS="-O2 -I/opt/X11/include/freetype2 -Wno-error=implicit-function-declaration" LDFLAGS="-lomp" --x-includes=/opt/X11/include --x-libraries=/opt/X11/lib~

very good video, thanks!