Support doesn't work

Question

I'm trying to use neovim with deoplete and UtilSnips. Both requires Python support from nvim.

I followed the instructions in :help nvim_python to set the support but the output of :echo has('python') or :echo has('python3') are both 0.

On nvim-startup I get the message UltiSnips requires py >= 2.7 or py3 and for deoplete It requires Neovim with Python 3 support ("+python3").

My python (2.7.10) and python3 (3.4.3) are both installed with homebrew. The neovim module is installed over pip and pip3 with install neovim but nvim can't find it, even when I set the let g:python_host_prog path in nvimrc.

I don't know what I am able to do anymore, has anyone an idea whats wrong with it?

Answer 1

Please follow the instruction on https://neovim.io/doc/user/provider.html#provider-python to setup the python interpreter for neovim.

First, install pynvim (previously, it was named neovim, but that has been changed) plugin

pip3 install pynvim

Print g:loaded_python3_provider

echo g:loaded_python3_provider
" for python 2.x use the following
" echo g:loaded_python_provider

If it returns 1, the python is not setup for neovim. In your ~/.config/nvim/init.vim file, set the python interpreter

let g:python3_host_prog='/path/to/python3'
" for python2, use the following instead
"let g:python_host_prog = '/path/to/python2.7'

Answer 2

I encountered the same problem lately. Here are the steps adapted from answer of @VforVitamin where I made it working.

Assuming python2 and python3 are installed.

1. Install neovim plugin pip3 install neovim.
2. Open neovim.
3. Execute command :UpdateRemotePlugins.
4. Restart neovim.

Answer 3

I had the issue myself because I used neovim inside virtualenv. If so, make sure to pip install neovim inside your virtualenv, and make sure that import neovim works in the python interpreter.

If that doesn't help, you can try and run neovim with debug messages (neovim -V3, or any other logging level) and see what you can pick from there.

Answer 4

I bet you have a line in your init file that starts with "set runtimepath=". Change it to "set runtimepath+="