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<@U0172QZ342D> in the git repo that i cloned just now the power cells are written as "vdd" and "vss" in the user_proj_example.v and user_project_wrapper.v but the videos I am following from the "how-to" playlist from efabless; in that power cells are called "vssd1".

After getting some error I found out the config.json files also refer to them as vssd1, vccd1, vccd2 etc. while .v files refer to them as vdd and vss. there is a clear mismatch

It didnt throw any error regarding this while hardening the user_proj_example but now while hardening the user_project_wrapper its throwing some error which i don't know if is related

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What the power supply names are called in the `user_proj_example` module is irrelevant;  the power supply names in `user_project_wrapper` _must_ be "vccd1", "vssd1", etc., because there are automated scripts that analyze the project wrapper and expect the pin names to match what's expected.
Within `user_project_wrapper`, the pin (net) names can get connected to different names in the instanced modules;  e.g., in the call to instantiate `user_proj_example`, the pin assignment `.vdd(vccd1)` would connect the power supply named  `vccd1` in `user_project_wrapper` to the power supply named  `vdd` in `user_proj_example`.

<@U016EM8L91B> Thank you i will change pin name in user_project_wrapper and run the floe again

<@U05H70DT7NV> the power for `sky130` is `vccd1` and `vssd1`. The power for `gf180mcu` is `vdd` and `vss`.

<@U017X0NM2E7>:  Good point.  Nothing in the discussion up to here specifies whether this project is on sky130 or gf180mcu, but it definitely makes a difference with respect to the power supply names.

Thank You <@U016EM8L91B> and <@U017X0NM2E7>. we were using sky130 only that issue got resolved, I changed all name in vccd1 format