Can't find module "pync"?

Hey there,

I’ve installed the plugin (and have python 2.7.10 installed via pyenv) as well as done a pip install pync, but on load of the plugin, this happens:

python: stdout/stderr: Traceback (most recent call last):
python: stdout/stderr:   File "/Users/colby/.weechat/python/autoload/notification_center.py", line 6, in <module>
python: stdout/stderr:     from pync import Notifier
python: stdout/stderr: ImportError: No module named pync
python: unable to parse file "/Users/colby/.weechat/python/autoload/notification_center.py"

I’m assuming it’s because it can’t find the pync package I’ve installed? What can I do to get it to recognize my pyenv Python install? It definitely is installed, because when I try it out via the Python REPL, I get this (with the notification appearing properly):

Hope you can help me out! Let me know if you need anything else from me.

[ghost]

@leoj3n I was about to give up on getting OS X notifications from Weechat! Thanks, you put me on the right track!

The trick is: “python” from homebrew must be installed BEFORE you install weechat via homebrew. Otherwise weechat links to macOS “python2” install, which lacks the ability to load all libraries.

I don’t use pyenv. Instead, I always use “python2/python3/pip2/pip3” prefixes to specify which version I want.

Here’s how I fixed my weechat which had been installed before I had homebrew’s python2:

brew uninstall weechat
brew install python3
brew install python
brew unlink python && brew link --overwrite python # make sure python links to python2
pip2 install --upgrade pip setuptools # upgrade to latest pip2
pip3 install --upgrade pip setuptools # upgrade to latest pip3
pip2 install pync
brew install weechat --with-perl --with-python --with-ruby --with-lua

After that, my weechat worked and was able to use pync!

So all that remained was to do this in weechat:

/script install notification_center.py
/script autoload notification_center.py

Success!

[leoj3n]

I have found this same issue with zsh+pyenv+weechat installed via Homebrew.

WeeChat is built using cmake: https://github.com/weechat/weechat/blob/master/Makefile.am#L58

I don’t really know much about cmake, but my guess is it “finds” the system python instead of pyenv.

Maybe we need to tell WeeChat’s cmake to use pyenv like this?

Can someone with more knowledge on the subject confirm whether or not the problem is indeed in how WeeChat builds itself, or maybe is it a problem with how Homebrew builds WeeChat? Certainly it’s not a problem with weechat-notification-center but not sure where to go next.

Also note that WeeChat recommends python version 2.7 over 3.x.

https://github.com/Homebrew/brew/blob/master/Library/Homebrew/language/python.rb#L20 https://github.com/Homebrew/brew/blob/master/Library/Homebrew/requirements/python_requirement.rb#L22

http://stackoverflow.com/questions/32018969/coexistence-of-homebrew-and-pyenv-on-macosx-yosemite

If I force the env var PYTHONPATH:

export PYTHONPATH="/usr/local/var/pyenv/versions/2.7.10/lib/python2.7/site-packages"

It finds pync but the error changes from ImportError: No module named pync to:

ImportError: dlopen(/usr/lib/python2.7/lib-dynload/_struct.so, 2): Symbol not found: _PyUnicodeUCS2_AsEncodedString

https://github.com/Homebrew/brew/blob/master/share/doc/homebrew/Homebrew-and-Python.md#homebrew-provided-python-bindings

https://docs.python.org/2/using/cmdline.html#envvar-PYTHONHOME

Finally:

I just gave up on that and used Homebrew’s python and pip:

brew install python
pyenv global system 2.7.10 3.5.1
pip install --upgrade pip setuptools
pip install pync
brew uninstall weechat
brew install weechat --with-lua --with-perl --with-ruby --with-aspell --with-python

Works. 👍