Deoplete在ArchLimux中不适用于Neovim

Question

我试图在ArchLinux上将neovim与deoplete一起使用。两者都需要Python支持。 我已经使用pacman安装了neovim插件和python-neovim，python2-neovim个额外的插件以使用python。 这是我最简单的neovim配置：

call plug#begin('~/.vim/plugged')

if has('nvim')
  Plug 'Shougo/deoplete.nvim', { 'do': ':UpdateRemotePlugins' }
else
  Plug 'Shougo/deoplete.nvim'
  Plug 'roxma/nvim-yarp'
  Plug 'roxma/vim-hug-neovim-rpc'
endif
let g:deoplete#enable_at_startup = 1

" Initialize plugin system
call plug#end()

但是deoplete自动补全对我不起作用。 我已经运行:checkhealth，结果如下：

health#deoplete#check
========================================================================
## deoplete.nvim
  - OK: exists("v:t_list") was successful
  - OK: has("timers") was successful
  - OK: has("python3") was successful
  - OK: Python3.5+ was successful
  - INFO: If you're still having problems, try the following commands:
    $ export NVIM_PYTHON_LOG_FILE=/tmp/log
    $ export NVIM_PYTHON_LOG_LEVEL=DEBUG
    $ nvim
    $ cat /tmp/log_{PID}
    and then create an issue on github

有人可以向我解释我在做什么错吗？