Hi @Tim Edwards, I downloaded CACE from the git repository. I am trying to run it on

sky130_ef_ip_instramp

. When I use command

../cace/cace_gui.py

I get the following error :

Traceback (most recent call last):

File "../cace/cace_gui.py", line 52, in <module>

from .gui.tksimpledialog import *

ImportError: attempted relative import with no known parent package

. Can you please tell me what am I doing wrong?

Maybe you did not install cace as a pip package. Run this command instead

COMMIT=b6b0b4c173a9b40a9274ba138792e6152aea59dd
python -m pip install git+<https://github.com/efabless/cace.git@$COMMIT>

This will install acording to the COMMIT (Which is the latests)

Hi @aquiles viza. Thank you so much for your reply. I did as you suggested. gui opens when I use

cace-gui

. But when I invoke it from

sky130_ef_ip_instramp

folder using

cace_gui.py

file, I get the same error.

Yes, sorry, this is a change from what I said in my presentation, because after that I got Leo Moser to package it up properly, and in just a day or so he had it registered with PiPI as a package, which allows it now to be installed with

pip

and called directly from the command line as

cace-gui

(or

cace-cli

). Overall, it works much better this way, except for the confusion caused by changing the installation method right after I introduced the tool.

Ok. Thank you so much for explanation @Tim Edwards

Hello, i cannot open cace, can someone help

Per the above: I suggested

pip install tk

but apparently that didn't work. @Inderjit Singh Dhanjal: Can you post the error message you got when you did

pip install tk

?

Maybe

sudo apt install python3-tk

?

Yes, I tried sudo apt installpython3-tk, its working now,

Hi Guys, I tried using the commands above, but I cannot open Cace-gui. Can someone help me?

@Phạm Thế Hùng Just use

cace-gui

command from sky130_ef_ip... folder to open CACE.

@naina singhal I also used

cace-gui

command. However, it is not true in bash shell.

@Phạm Thế Hùng If CACE is installed, cace-gui should be present there.

@naina singhal I tried them and got the same errors.

Sorry I have no idea why the CACE is not installing properly. @Tim Edwards can help you with the issue.

I think there are two different types of errors that are now mixed together in this slack thread. For people who are getting the error "attempted relative import with no known parent package": In order to make CACE accessible through PiPI with a simple

pip install

command, the tool had to be configured a bit differently from the description I gave in the workshop. The current version of CACE installs with

pip install cace --upgrade

and runs from the Linux command line as simply

cace-gui

. Do not run it as

python

and give the full path to

cace-gui.py

. There is some way to do that but I don't know what it is off the top of my head. For the error with

cace-gui:  command not found

: You can find a discussion of the problem and solution here: https://stackoverflow.com/questions/35898734/pip-installs-packages-successfully-but-executables-not-found-from-command-line In short,

pip install

installs the executable into

~/.local/bin/

, and this is often not in the

$PATH

environment variable and so is not found. The best thing to do is to make sure this path is added to

$PATH

in your login shell, although you can also add it manually with

export PATH=$PATH:~/.local/bin

, and you can also call

~/.local/bin/cace-gui

directly from the command line.

Thanks @Tim Edwards and @naina singhal for supporting me. I tried configuring the .bashrc file in my linux system by adding the following command:

export PATH=$PATH:~/.local/bin

. After that, I run the command:

pip install cace --upgrade

. Finally, I opened Cace tool successfully using :

cace-gui