Neovim in Windows

#vim #windows

This is a guide for setting up Neovim in Windows with plugins for doing Python development. While most of the time I'll be working in WSL using a similar Neovim setup there, I thought it be handy to have approximation of the config in Windows.

Packages

We'll be using scoop for installing neovim and our Python versions (2 and 3). Head on over to https://scoop.sh/ and follow the instructions there to get scoop configured and installed.

Neovim is present in the main buckets:

scoop install neovim

As well as Python 3.8.0

scoop install python

Let's also grab a copy of Python 2.7.17 so we can create a virtualenv for either version

scoop bucket add versions
scoop install python27

Grab a copy of fzf for fuzzy finding in your project directories. We'll install an plugin for this in a later step

scoop install fzf

And rg for text searching

scoop install rg

Virtualenvs

We'll be creating virtualenvs for nvim to use Python plugins, like deoplete, as well as one for the black formatting plugin. By default, the pip shim should point to the binary in your Python 3.8 install.

pip install virtualenv

md C:\Users\coolguy\virtualenvs
cd virtualenvs

virtualenv -p C:\Users\coolguy\scoop\apps\python\3.8.0\python.exe nvimpy3
virtualenv -p C:\Users\coolguy\scoop\apps\python27\2.7.17\python.exe nvimpy2
virtualenv -p C:\Users\coolguy\scoop\apps\python\3.8.0\python.exe black

Now we'll install some packages in the virtualenvs.

C:\Users\coolguy\virtualenvs\nvimpy3\Scripts\pip.exe install pynvim jedi
C:\Users\coolguy\virtualenvs\nvimpy2\Scripts\pip.exe install pynvim jedi
C:\Users\coolguy\virtualenvs\black\Scripts\pip.exe install black

vim-plug Plugin Manager

Run the following to setup your plugin directory and install vim-plug

md ~\AppData\Local\nvim\autoload
$uri = 'https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim'
(New-Object Net.WebClient).DownloadFile(
  $uri,
  $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath(
    "~\AppData\Local\nvim\autoload\plug.vim"
  )
)

init.vim

The config for Neovim lives in C:\Users<user>\AppData\Local\nvim\init.vim. The following is the config we'll be using:

set nocompatible
filetype off
set t_Co=256

call plug#begin('~/AppData/Local/nvim/plugged')
" Python autocomplete
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-jedi'
" Git wrapper
Plug 'tpope/vim-fugitive'
" Directory sidebar tree view
Plug 'scrooloose/nerdtree'
" Json plugin
Plug 'elzr/vim-json'
" Text search your project directory
Plug 'dyng/ctrlsf.vim'
" Fuzzy file finder
Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
Plug 'junegunn/fzf.vim'
" Root the project dir to folder w/ .git if applicable
Plug 'airblade/vim-rooter'
" Nice colorscheme based on Visual Studio dark
Plug 'tomasiser/vim-code-dark'

call plug#end()

colors codedark
let g:airline_theme = 'codedark'
set shiftwidth=4
set tabstop=4
set expandtab
filetype plugin on
filetype indent on
syntax on
set nu
set autochdir
nmap <leader>l :set list!<CR>
set mouse=a
set autoread
let NERDTreeQuitOnOpen = 1
set completeopt=menu
set linebreak
autocmd Filetype html,ruby,javascript,yml,yaml,json,haskell,ejs,htmldjango setlocal ts=2 sts=2 sw=2
set noswapfile
set wildignore+=*.pyc

if &term =~ '256color'
  " disable Background Color Erase (BCE) so that color schemes
  " render properly when inside 256-color tmux and GNU screen.
  " see also http://snk.tuxfamily.org/log/vim-256color-bce.html
  set t_ut=
endif

let g:ycm_autoclose_preview_window_after_completion=1
set enc=utf-8
set fileencodings=ucs-bom,utf8,prc
set fileencoding=utf-8

set nofoldenable
filetype plugin indent on

let g:python2_host_prog = 'C:\Users\coolguy\virtualenvs\nvimpy2\Scripts\python.exe'
let g:python3_host_prog = 'C:\Users\coolguy\virtualenvs\nvimpy3\Scripts\python.exe'
let g:black_virtualenv = 'c:/Users/jgori/virtualenvs/black'

let g:acp_enableAtStartup = 0

let g:deoplete#enable_at_startup = 1
" deoplete tab-complete
inoremap <expr><tab> pumvisible() ? "\<c-n>" : "\<tab>"

let g:fzf_action = {
      \ 'ctrl-s': 'split',
      \ 'ctrl-v': 'vsplit',
      \ 'ctrl-t': 'tabe'
      \ }
nnoremap <c-p> :FZF<cr>
nnoremap <c-f> :Rg<cr>

command! -bang -nargs=* Rg
  \ call fzf#vim#grep(
  \ 'rg --column --line-number --no-heading --color=always --smart-case '.shellescape(<q-args>), 1,
  \ <bang>0 ? fzf#vim#with_preview('up:60%')
  \ : fzf#vim#with_preview('right:50%:hidden', '?'),
  \ <bang>0)

init.vim

First Run

You'll get some errors of nonexistent packages. In command mode, enter :PlugInstall to install the plugins listed in init.vim. To update these later, run :PlugUpdate.