Rust + Neovim

This assumes you have Neovim installed already.

  1. Install Rust. Make sure to add export PATH="$HOME/.cargo/bin:$PATH" to end of ~/.bashrc. Note: you can uninstall at anytime with rustup self uninstall.

  2. Install rustfmt and its Vim counterpart, rust.vim

  3. Install Rust Clippy

Getting Autocomplete in Neovim with Deoplete

  1. Install Deoplete
  • You may first be required to install some Python stuff. You may want to get your pyenv setup working first. However, in a pinch, these commands have worked for me in the past:

    • Install pip3 with sudo apt-get install python3-pip
    • and then pip3 install neovim
  1. Check that let g:deoplete#enable_at_startup = 1 is set in your Vim config file.

  2. Install Racer

  3. Make sure Vim Racer is installed. My vim-racer config is:

Plug 'racer-rust/vim-racer'
set hidden
let g:racer_cmd = "~/.cargo/bin/racer"
let g:racer_experimental_completer = 1
  1. Make sure you you've got the rust.vim Vim plugin installed: Plug 'rust-lang/rust.vim'

Language Server

  1. Install Rust Language Server
  2. Get LanguageClient-Neovim setup.

Altogether your Neovim init.vim is going to look something like this:

" Rust Language Server
Plug 'autozimu/LanguageClient-neovim', {
\ 'branch': 'next',
\ 'do': 'bash',
\ }

Plug 'junegunn/fzf'

" Auto-complete
if has('nvim')
  Plug 'Shougo/deoplete.nvim', { 'do': ':UpdateRemotePlugins' }
  Plug 'Shougo/deoplete.nvim'
  Plug 'roxma/nvim-yarp'
  Plug 'roxma/vim-hug-neovim-rpc'

" Language or filetype specific
Plug 'rust-lang/rust.vim'
Plug 'racer-rust/vim-racer'

" ...

" Language Server Config
let g:LanguageClient_serverCommands = {
\ 'rust': ['~/.cargo/bin/rustup', 'run', 'stable', 'rls'],
\ }

nnoremap <silent> K :call LanguageClient#textDocument_hover()<CR>
nnoremap <silent> gd :call LanguageClient#textDocument_definition()<CR>
" got an error with this on only attempt
nnoremap <silent> gr :call LanguageClient#textDocument_rename()<CR>

" Deoplete (general auto-complete)
let g:deoplete#enable_at_startup = 1

" Racer (Rust auto-complete)
let g:racer_cmd = "~/.cargo/bin/racer"
let g:racer_experimental_completer = 1

" ...

set hidden

Then, from the command line, run nvim +PlugInstall +UpdateRemotePlugins +qa to install all that right.