health#provider#check↲
========================================================================↲
## Clipboard (optional)↲
  - OK: Clipboard tool found: pbcopy↲
↲
## Python 2 provider (optional)↲
  - OK: pyenv found: "/Users/okamura/dotfiles/.pyenv/libexec/pyenv"↲
  - INFO: Using: g:python_host_prog = "~/.pyenv/versions/neovim2/bin/python"↲
  - INFO: Executable: /Users/okamura/.pyenv/versions/3.6.3/bin/python↲
  - WARNING: Unexpected Python version. This could lead to confusing error messages.↲
  - INFO: Python2 version: 3.6.3↲
  - INFO: python-neovim version: 0.2.0↲
  - OK: Latest python-neovim is installed: 0.2.0↲
↲
## Python 3 provider (optional)↲
  - OK: pyenv found: "/Users/okamura/dotfiles/.pyenv/libexec/pyenv"↲
  - INFO: Using: g:python3_host_prog = "~/.pyenv/versions/neovim3/bin/python"↲
  - INFO: Executable: /Users/okamura/.pyenv/versions/3.6.3/bin/python↲
  - INFO: Python3 version: 3.6.3↲
  - INFO: python-neovim version: 0.2.0↲
  - OK: Latest python-neovim is installed: 0.2.0↲

INFO: Python2 version: 3.6.3↲となってしまうのは何故でしょうか。
virtualenvでpy2用のneovim2とpy3用のneovim3は作っています。

.config/nvim/init.vimには下記の2行を記載しています。

let g:python_host_prog = '~/.pyenv/versions/neovim2/bin/python'↲
let g:python3_host_prog = '~/.pyenv/versions/neovim3/bin/python'