linux (Lubuntu 17.10) 2018.02
neovim with vim-plugin, vim-go and deoplete.vim code completion

prerequisites:
go -Installation
Python3 or Anaconda3 (- use pip for python neovim needed by deoplete)
export PATH=$PATH:/usr/local/go/bin
export GOROOT=/usr/local/go
export GOPATH=$HOME/go

$ sudo apt-get update
$ sudo apt-get install neovim
( –> vs 0.2.0 in ~/.local/share/nvim )

$ pip install neovim

$ cd ~/.local/share/nvim/
$ git clone https://github.com/Shougo/deoplete.nvim.git
$ curl -fLo ~/.local/share/nvim/site/autoload/plug.vim –create-dirs https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim

$ mkdir ~/.local/share/nvim/plugged
$ mkdir ~/.config/nvim/

$ nvim ~/.config/nvim/init.vim

call plug#begin('~/.local/share/nvim/plugged')

Plug 'junegunn/vim-easy-align'

Plug 'https://github.com/junegunn/vim-github-dashboard.git'

Plug 'scrooloose/nerdtree', { 'on':  'NERDTreeToggle' }

Plug 'fatih/vim-go', { 'tag': '*' }

Plug 'nsf/gocode', { 'tag': 'v.20150303', 'rtp': 'vim' }

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

Plug 'zchee/deoplete-go', { 'do': 'make'}

Plug 'terryma/vim-multiple-cursors'

call plug#end()

" neocomplete like
set completeopt+=noinsert
" deoplete.nvim recommend
set completeopt+=noselect

" Path to python interpreter for neovim
let g:python3_host_prog  = '/path/to/python'
" Skip the check of neovim module
let g:python3_host_skip_check = 1

" Run deoplete.nvim automatically
let g:deoplete#enable_at_startup = 1
" deoplete-go settings
let g:deoplete#sources#go#gocode_binary = $GOPATH.'/bin/gocode'
let g:deoplete#sources#go#sort_class = ['package', 'func', 'type', 'var', 'const']
let g:go_auto_type_info = 1

" Disable deoplete when in multi cursor mode
function! Multiple_cursors_before()
    let b:deoplete_disable_auto_complete = 1
endfunction
function! Multiple_cursors_after()
    let b:deoplete_disable_auto_complete = 0
endfunction

restart nvim
:PlugInstall
:GoInstallBinaries

___and you’re DONE___