libtmux not found on Mac even though installed

[prateek-zh]

Hi,

I have setup tmux-window-name using the tpm but when I source .tmux.conf, I see an error at the bottom of the window saying:

ERROR: tmux-window-name - Python dependency libtmux not found (Check the README)

I am running tmux on iTerm2 and on a Mac. Any idea what the issue might be?

[ofirgall]

can you share the output of python3 -m pip list?

[prateek-zh]

❯ python3 -m pip list
Package           Version
----------------- -------
awscli-local      0.20
boto3             1.24.20
botocore          1.27.20
jmespath          1.0.1
libtmux           0.11.0
localstack-client 1.35
pip               22.1.2
python-dateutil   2.8.2
s3transfer        0.6.0
setuptools        58.1.0
six               1.16.0
urllib3           1.26.9

[ofirgall]

can you run this bash code and share the output

pip_list=$(python3 -m pip list 2> /dev/null)
echo "pip_list"
echo "$pip_list"
if ! echo "$pip_list" | grep libtmux -q; then
    echo "error"
    exit 0
fi
echo "ok"

[prateek-zh]

❯ ./debug.sh
pip_list
Package           Version
----------------- -------
awscli-local      0.20
boto3             1.24.20
botocore          1.27.20
jmespath          1.0.1
libtmux           0.11.0
localstack-client 1.35
pip               22.1.2
python-dateutil   2.8.2
setuptools        58.1.0
six               1.16.0
urllib3           1.26.9
ok

Just a heads up, I uninstalled s3transfer just now so it would be a package that is missing from my last message.

[ofirgall]

It's very weird, the output is ok, its the same code from tmux_window_name.tmux which tpm runs, you can manually edit your tmux_window_name.tmux to add debug prints, add echo "$pip_list" and reload your plugins <prefix> + r

[prateek-zh]

It is super weird indeed. I added the echo "$pip_list" before the if-block but it does not get printed on the screen, the error is displayed though. How do I see the output?

I've tried <prefix> + r and also running tmux source-file ~/.tmux.conf with the same results.

[ofirgall]

it's usually "stops" the current screen on the tmux session and shows the output, make sure you edited `"~/.tmux/plugins/tmux-window-name/tmux_window_name.tmux", if it still doesn't show output you can send the output to file.

echo "$pip_list" > /tmp/tmux_out

[prateek-zh]

I confirmed that the "~/.tmux/plugins/tmux-window-name/tmux_window_name.tmux" was indeed updated but the output is not being printed. Updated to send output to file:

Package    Version
---------- -------
pip        22.0.4
setuptools 60.10.0
six        1.16.0
wheel      0.37.1

I am on zsh could that be a problem?

[ofirgall]

zsh isn't a problem.

It seems that your tpm runs the bash/python with different user/python version.

Please add:

echo $USER
which python3
python3 -V
python3 -m site
python3 -m site --user-site

[prateek-zh]

I think I found the issue. tmux_window_name uses a different version of python: /usr/local/bin/python.

In my shell, I use the python provided with pyenv. Let me try initializing pyenv in the "~/.tmux/plugins/tmux-window-name/tmux_window_name.tmux".

[prateek-zh]

Added the following:

if command -v pyenv 1>/dev/null 2>&1; then
  eval "$(pyenv init --path)";
fi

and the pip_list is now as expected. Will try to see if the names are showing up as expected.

[prateek-zh]

No errors anymore but switching between screens in a session gives the following error:

'~/.tmux/plugins/tmux-window-name/scripts/rename_session_windows.py' returned 1

[ofirgall]

I strongly suggest to installed libtmux in the user python, I designed the plugin to use the user python env.

You can manually run ~/.tmux/plugins/tmux-window-name/scripts/rename_session_windows.py' from your terminal to see the traceback.

[prateek-zh]

Thanks for your suggestion. I installed libtmux to the default python3, removed the pyenv initialization and now it works as expected.

Appreciate your prompt responses and maintaining this super useful tool. Kudos!

[ofirgall]

Thanks! Have fun with the tool :)

I added note in the README to use the user plugin instead of virtualenv

[ShelpAm]

I strongly suggest to installed libtmux in the user python, I designed the plugin to use the user python env.

It seems that in 'tmux_window_name.tmux', pip_list=$(python3 -m pip list 2> /dev/null) doesn't retreive user packages but rather root's packages. I added tmux display "$(pip -V)" in the script, and it prints message: pip 24.2 from /usr/local/lib/python3.12/site-packages/pip (python 3.12), which is not in user mode.

EDIT: And now I'm encountering the same problem (libtmux not found).

The problem has now disappeared.

[ken-matsui]

For those who encounter the same problem in the future, we need to use the system python3, not Homebrew's:

$ which python3
/opt/homebrew/opt/python@3.10/libexec/bin/python3

If your environment returns something like this, you should do the following instead:

$ /usr/bin/python3 -m pip install --user libtmux