E117: Unknown function: IPyConnect

[dpavlic]

This looks like an interesting project; however, I can't get it off the ground. I insall the plugin via BundleInstall, start neovim, and attempt :IPython but I get:

E117: Unknown function: IPyConnect

I've just started using Neovim from Vim, so I may be missing something obvious.

[bfredl]

Are both neovim and its python-client relatively recent master versions? If you run :UpdateRemotePlugins and then restart neovim does it help?

[dpavlic]

It seems this is not a problem with the plugin:

Error detected while processing function <SNR>62_UpdateRemotePlugins..<SNR>62_RegistrationCommands..remote#host#Require..<SNR>62_RequirePythonHost:
line   66:
E605: Exception not caught: Failed to load python host. Try upgrading the Neovim python module with 'pip install --upgrade neovim' or see ':help nvim-python'.
Error detected while processing function <SNR>62_UpdateRemotePlugins..<SNR>62_RegistrationCommands..remote#host#Require:
line    6:
E171: Missing :endif
Error detected while processing function <SNR>62_UpdateRemotePlugins:
line    5:
E171: Missing :endif

What's strange is that the python-client is the latest version... but it's not being loaded for some reason.

[bfredl]

Unfortunately, that message is a bit misleading: the host could fail to load, because there was an error with the plugin. If you just source the python file, ie

python2 rplugin/python/nvim_ipy.py
from the root of this repo, do you get any error? (remove the 2 if python2 couldn't be found)
What version of IPython do you have?

[dpavlic]

AHA!

OK, issue is solved. The script requires pyzmq, while I had just a vanilla ipython installation.

Thanks for your help.

[bfredl]

Happy to help :) Just post here, if there is any further problem, or any suggestions. (Something obviously missing is that I haven't written almost any documentation so far)

[dpavlic]

I'm going to close the issue now, but I will let you know if I run into any trouble. I am using it right now with tears of joy :). I've migrated at least some of my Python development off to emacs/evil due to async painfulness, and even with neovim's 'alpha' state, it looks like it's time to migrate back.

[justmytwospence]

I can run the script itself (ie, python .vim/plugins/nvim-ipy/rplugin/python/nvim_ipy.py), but I still get this error in neovim.

[bfredl]

@justmytwospence Have you tried :UpdateRemotePlugins and restart nvim? If it doesn't help, what is the contents of .nvim/.nvimrc-rplugin~ ?

[rsdenijs]

@bfredl. UpdateRemotePlugins solved it for me.