hello, I am following postivefb's installation guide and am not able to see the skywater pdk show up when i run xschem. I see the following: and when i run klayout, there is a step where I should be able to go to File, New Layout, and in the bottom left select the drop down to change to Sky130 and you should see the different devices you can drop in. I don't see a drop down menu to change to sky130. Here is the image:

Regarding the klayout issue, what options are you calling klayout with? I run it like so

klayout -nn <path to pdk>/sky130A/libs.tech/klayout/tech/sky130A.lyt -l <path to pdk>/sky130A/libs.tech/klayout/tech/sky130A.lyp

I followed this guide: https://positivefb.com/skywater-130nm-installation/ it sounds like you're asking what was the path klayout is using to access the PDK? I did it as the guide says which I think might be correct (?) : -Tools, Manage Technologies, General, set base path to /openpdk/share/pdk/sky130A/libs.tech/klayout -Close and restart Klayout -File, New Layout, and in the bottom left select the drop down to change to Sky130 and you should see the different devices you can drop in. If all good, close klayout

Hi @asdf asdf, please follow the instructions in the repository: https://github.com/efabless/sky130_klayout_pdk To use the PCells, you need to install gdsfactory. If you use the KLayout derivation from our nix-flake (https://github.com/efabless/nix-eda), you can start KLayout as follows:

nix run github:efabless/nix-eda#klayout-gdsfactory

I did this following: 1. Option: Use KLayout's Salt package manager 2. In Klayout select

Tools

→

Manage Packages

. Inside the Salt package manager under "Install New Packages" search for "Efabless_sky130", click the checkmark and apply. and the drop down menu now includes the skywater 130nm. Regarding the xschem file, I believe I need to change something in the xschemrc or bashrc file so that xschem can access the pdk. It keeps on saying somethign is missing.

@asdf asdf great! Do the PCells work for you? As for xschem, you can take a look how our template works: https://github.com/efabless/sky130_ef_ip__template Inside the

xschem/

folder, there is an

xschemrc

that sets up a few things and loads the PDK's

xschemrc

. (Don't modify the PDK's xschemrc.) If you start xschem from inside the

xschem/

folder it will automatically source the local

xschemrc

and you should be able to see the devices.

I don't know what the PCells are but i think i might be able to. Here is what I am seeing: I'm not sure how to use this template. In the positive feedback installation guide, there is a step where you need to create a "workingdir" toward the end and you copy an xschemrc file into the schematic file within "workingdir". I tried changing the xschemrc file by deleting it and creating a new one where I copy and pasted the contents from xschem/xschemrc file in your github. However, after trying to run the xschem command, it says

PCells are used to draw the devices of the PDK. If you click on "Instance" a window should open in the bottom left, there you can select a library and a cell and place it.

the pcells aren't showing up then:

Can you select the skywater130 library? If not, then probably because you didn't install gdsfactory correctly. If you start KLayout from a terminal, you should see an error message. Please re-read my message from the beginning to install gdsfactory correctly, or to install KLayout via Nix to include gdsfactory.