Update configuration to use neovim's internal language server support

nvim/.config/nvim/init.vim

@@ -1,8 +1,7 @@
 call plug#begin('~/.config/nvim/plugged')
 " Language Tools
-Plug 'roxma/nvim-yarp' " For language client
-Plug 'ncm2/ncm2' " For language client
-Plug 'autozimu/LanguageClient-neovim', {'branch': '0.1.159', 'do': 'bash install.sh' }
+Plug 'hrsh7th/nvim-compe'
+Plug 'neovim/nvim-lspconfig'
 Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --bin' }
 Plug 'junegunn/fzf.vim'
 Plug 'SirVer/ultisnips'
@@ -10,6 +9,7 @@ Plug 'luochen1990/rainbow'
 " Plug 'enomsg/vim-haskellConcealPlus' " This one isn't always good.
 
 " Languages
+Plug 'evanleck/vim-svelte'
 Plug 'LnL7/vim-nix'
 Plug 'whonore/Coqtail'
 Plug 'wlangstroth/vim-racket'
@@ -36,8 +36,11 @@ Plug 'junegunn/goyo.vim'
 Plug 'iamcco/markdown-preview.vim'
 Plug 'junegunn/limelight.vim'
 Plug 'luochen1990/rainbow'
+Plug 'simrat39/symbols-outline.nvim'
+Plug 'folke/todo-comments.nvim'
 
 " Misc
+Plug 'nvim-lua/plenary.nvim'
 Plug 'airblade/vim-gitgutter'
 call plug#end()
 
@@ -47,17 +50,14 @@ set expandtab " Expand tabs into spaces
 set number " Set line numbers
 set mouse=a " Allow mouse
 set signcolumn=yes " Always show extra column
-set guifont=Iosevka " Use Ioeska in frontends.
+set guifont=Iosevka:h35 " Use Ioeska in frontends.
 set hidden
 
-autocmd BufEnter * call ncm2#enable_for_buffer() " Enable ncm2 for all buffers
 autocmd BufRead,BufNewFile *.v set filetype=coq " Coq is not Verilog
 autocmd BufNewFile,BufRead *.cir set filetype=spice " LTSpice is Spice
 autocmd BufRead,BufNewFile *.dl set filetype=dl " Datalog is Datalog
 autocmd FileType crystal setlocal shiftwidth=2 " Crystal likes 2-wide indent
 
-set completeopt=noinsert,menuone
-
 " Settings for Rainbow
 let g:rainbow_active = 1
 
@@ -66,9 +66,9 @@ let g:limelight_conceal_ctermfg = 8
 
 " Settings for Vim's LaTeX plugin
 let g:tex_flavor = 'latex'
-
-" Settings for deoplete
-let g:deoplete#enable_at_startup = 1
+let g:vimtex_quickfix_open_on_warning = 0
+let g:vimtex_view_general_viewer = 'okular'
+let g:vimtex_view_general_options = '--unique file:@pdf\#src:@line@tex'
 
 " Settings for UltiSnips
 let g:UltiSnipsExpandTrigger="<tab>"
@@ -83,36 +83,30 @@ let g:neovide_cursor_vfx_mode="ripple"
 
 colorscheme nord
 
-" Language Client settings
-let g:LanguageClient_selectionUI = "fzf"
-let g:LanguageClient_hasSnippetSupport = 0
-let g:LanguageClient_serverCommands = {
-              \ 'haskell': ['haskell-language-server-wrapper', '--lsp'],
-              \ 'rust': ['rls'],
-              \ 'c': ['clangd'],
-              \ 'crystal': ['/home/vanilla/software/crystalline/crystalline'],
-              \ 'cpp': ['clangd'],
-              \ 'javascript': ['typescript-language-server', '--stdio'],
-              \ 'typescript': ['typescript-language-server', '--stdio'],
-              \ 'elm': ['elm-language-server', '--stdio'],
-              \ 'python': ['python', '-m', 'pyls'],
-              \ 'elixir': ['/home/vanilla/software/elixir-ls/language_server.sh']
-              \ }
-let g:LanguageClient_diagnosticsDisplay = {
-            \ 1: {"name": "Error","texthl": "ALEError","signText": ">>","signTexthl": "ALEErrorSign",},
-            \ 2: {"name": "Warning","texthl": "ALEWarning","signText": ">>","signTexthl": "ALEWarningSign",},
-            \ 3: {"name": "Information","texthl": "ALEInfo","signText": ">>","signTexthl": "ALEInfoSign",},
-            \ 4: {"name": "Hint","texthl": "ALEInfo","signText": ">>","signTexthl": "ALEInfoSign",},}
-let g:LanguageClient_rootMarkers = {
-            \ 'haskell': ['.git'],
-            \ 'crystal': ['.git'],
-            \ 'elm': ['elm.json'],
-            \ }
+lua require('lspconfig').hls.setup{}
+lua require('lspconfig').rls.setup{}
+lua require('lspconfig').clangd.setup{}
+lua require('lspconfig').tsserver.setup{}
+lua require('lspconfig').elmls.setup{}
+lua require('lspconfig').pylsp.setup{}
 
+" nmap <silent>K <Plug>(lcn-menu)
+nmap <silent>M <cmd>lua vim.lsp.diagnostic.show_line_diagnostics()<CR>
+nmap <silent>? <cmd>lua vim.lsp.buf.hover()<CR>
+nmap <silent>K <cmd>lua vim.lsp.buf.rename()<CR>
+
+" Ctrl-e to open file in new tab (or jump to it)
 nmap <c-e> :Files<CR>
-nmap <silent>K <Plug>(lcn-menu)
-nmap <silent>M <Plug>(lcn-explain-error)
-nmap <silent>? <Plug>(lcn-hover)
+
+" Autocompletion
+set completeopt=menuone,noselect
+let g:compe = {}
+let g:compe.enabled = v:true
+let g:compe.source = {
+  \ 'path': v:true,
+  \ 'buffer': v:true,
+  \ 'nvim_lsp': v:true,
+  \ }
 
 " Racket settings
 au BufReadPost *.rkt,*.rktl set filetype=racket
@@ -124,3 +118,9 @@ function! g:CoqtailHighlight()
     hi default link CoqtailChecked Visual
     hi default link CoqtailSent PmenuSel
 endfunction
+
+lua << EOF
+  require("todo-comments").setup {
+    search = { command = "ag", },
+  }
+EOF