Neovim LSP support

[gasacchi]

Hi, I currently using neovim nightly build.
can i use this plugin with https://github.com/neovim/nvim-lspconfig ?
Thanks

[ryyppy]

Only if the vim LSP client supports node-ipc communication.. we don't have a stdout, nor socket option.

Use the settings as stated in the coc vim config part in the README and let me know how it went!

[amiralies]

it just supports stdout AFAIK.
I think we need to support stdout (many language clients communicate via stdout only) and it should be trivial to implement.

[gasacchi]

yes, i try to look on lspconfig in the repo it seems only support stdout. well i'm going to use coc for now, btw thank for response 😄

[WhyThat]

Just for your information you can now configure the builtin LSP thanks to rescript-lang/rescript-vscode#88
Steps:

• git clone https://github.com/rescript-lang/rescript-vscode
• cd rescript-vscode
• npm install
• npm run compile
• cd analysis && make
• Add this wherever you configure your LSPs

local lsp = require'lspconfig'
local configs = require'lspconfig/configs'
local rescriptLspPath = '~/repos/rescript-vscode/server/out/server.js'

if not lsp.rescriptlsp then
  configs.rescriptlsp = {
    default_config = {
      cmd = {'node', rescriptLspPath, '--stdio'};
      filetypes = {"rescript"};
      root_dir = lsp.util.root_pattern('bsconfig.json');
      settings = {};
    };
  }
end
lsp.rescriptlsp.setup{
  -- with your configurations
}

[amiralies]

rescript supported is added to nvim-lspconfig so assuming you have latest lspconfig version setup is trivial

require'lspconfig'.rescriptls.setup {
  cmd = {
    'node',
    '<path to server.js>',
    '--stdio'
  }
}

[rocinant3]

For the third day I have been trying to integrate Rescript support on pure LSP (Not COC!) In neovim.
But nothing comes out (the LspInfo command confirms the presence of the client, but there is no support from him)!
Tried options with vs-code-lang-server and the official vim-rescript plugin. My config:

call plug#begin()
         Plug 'nvim-lua/completion-nvim'
         Plug 'rescript-lang/vim-rescript'
         Plug 'neovim/nvim-lspconfig'
         Plug 'nvim-treesitter/nvim-treesitter', {'do': ':TSUpdate'}
call plug#end()

set number

" LSP
lua require('lspconfig').pyright.setup{}
lua require('lspconfig').rescriptls.setup{cmd={'node','~/.config/nvim/plugged/vim-rescript/server/out/server.js','--stdio'}}
 
" Completion
 " lua require('lspconfig').pyright.setup{on_attach=require('completion').on_attach}
 " lua require('lspconfig').rescriptls.setup{on_attach=require('completion').on_attach}

set completeopt=menuone,noinsert,noselect
" Avoid showing message extra message when using completion
set shortmess+=c
let g:completion_enable_auto_popup = 1


" Use completion-nvim in every buffer
 autocmd BufEnter * lua require('completion').on_attach()

Can anyone help?

[amiralies]

@rocinant3 can you try pointing to server with absolute path?
/home/<username>/.config/......
instead of
~/.config/...

[rocinant3]

@amiralies, seems works!, thank you

But what about auto-completion?
There is an instruction in my config (usually works with all languages)
lua require('lspconfig').rescriptls.setup{on_attach=require('completion').on_attach}

But in this case nvim crashed with error:

An error was encountered while processing the FileType Autocommand for "rescript":
E5108: Error executing lua Vim:E928: String required
E5108: Error executing lua Vim:E928: String required

[amiralies]

I'm not sure if its related with rescript's config.
I use nvim-compe and it just works.

[rocinant3]

Solved a problem! Everything is working. Thanks again

[barkanido]

@rocinant3 can I ask how?