neovim: Replace CoC with nvim-lspconfig for Rust

neovim/coc-settings.json

@@ -1,8 +0,0 @@
-{
-  "coc.preferences.formatOnSaveFiletypes": ["rust"],
-  "rust-analyzer.enable": false,
-  "rust-analyzer.diagnostics.enableExperimental": false,
-  "rust-analyzer.inlayHints.enable": false,
-  "rust-analyzer.procMacro.enable": true,
-  "rust-analyzer.updates.channel": "nightly"
-}

neovim/coc/.gitignore

@@ -1,3 +0,0 @@
-/list-extensions-history.json
-/list-location-history.json
-/commands

neovim/coc/extensions/.gitignore

@@ -1,2 +0,0 @@
-/coc-rust-analyzer-data
-/package-lock.json

neovim/coc/extensions/db.json

@@ -1 +0,0 @@
-{}

neovim/coc/extensions/package.json

@@ -1,8 +0,0 @@
-{
-  "dependencies": {
-    "coc-json": ">=1.3.4",
-    "coc-rls": ">=1.1.6",
-    "coc-rust-analyzer": ">=0.46.0",
-    "coc-tsserver": ">=1.8.1"
-  }
-}

neovim/coc/memos.json

@@ -1,5 +0,0 @@
-{
-  "coc-rust-analyzer|global": {
-    "release": "nightly 2021-06-05"
-  }
-}

neovim/init.vim

@@ -32,7 +32,7 @@ Plug 'ledger/vim-ledger'
 Plug 'LnL7/vim-nix'
 Plug 'MarcWeber/vim-addon-local-vimrc'
 Plug 'mxw/vim-jsx'
-Plug 'neoclide/coc.nvim', {'branch': 'release'}
+Plug 'neovim/nvim-lspconfig'
 Plug 'ntpeters/vim-better-whitespace'
 Plug 'pangloss/vim-javascript'
 Plug 'plasticboy/vim-markdown'
@@ -328,5 +328,41 @@ endfun
 command ResetScreen call s:ResetScreen()
 nnoremap <C-l> :ResetScreen<CR>
 
-nmap <silent> <Leader>j <Plug>(coc-diagnostic-next)
-nmap <silent> <Leader>k <Plug>(coc-diagnostic-prev)
+lua <<LSPCONFIG
+local nvim_lsp = require('lspconfig')
+
+local on_attach = function(client, bufno)
+  local function buf_set_keymap(...) vim.api.nvim_buf_set_keymap(bufno, ...) end
+  local function buf_set_option(...) vim.api.nvim_buf_set_option(bufno, ...) end
+
+  -- Enable completion through omnifunc, triggered by <C-x><C-o>
+  buf_set_option('omnifunc', 'v:lua.vim.lsp.omnifunc')
+
+  -- Mappings.
+  local opts = { noremap=true, silent=true }
+
+  buf_set_keymap('n', 'gd', '<cmd>lua vim.lsp.buf.definition()<CR>', opts)
+  buf_set_keymap('n', 'gD', '<cmd>lua vim.lsp.buf.declaration()<CR>', opts)
+  buf_set_keymap('n', 'K', '<cmd>lua vim.lsp.buf.hover()<CR>', opts)
+  buf_set_keymap('n', 'gi', '<cmd>lua vim.lsp.buf.implementation()<CR>', opts)
+  buf_set_keymap('n', '<C-k>', '<cmd>lua vim.lsp.buf.signature_help()<CR>', opts)
+  buf_set_keymap('n', '<Leader>D', '<cmd>lua vim.lsp.buf.type_definition()<CR>', opts)
+  buf_set_keymap('n', '<Leader>R', '<cmd>lua vim.lsp.buf.rename()<CR>', opts)
+  buf_set_keymap('n', '<Leader>ca', '<cmd>lua vim.lsp.buf.code_action()<CR>', opts)
+  buf_set_keymap('n', 'gr', '<cmd>lua vim.lsp.buf.references()<CR>', opts)
+  buf_set_keymap('n', '<Leader>d', '<cmd>lua vim.lsp.diagnostic.show_line_diagnostics()<CR>', opts)
+  buf_set_keymap('n', '<Leader>j', '<cmd>lua vim.lsp.diagnostic.goto_prev()<CR>', opts)
+  buf_set_keymap('n', '<Leader>k', '<cmd>lua vim.lsp.diagnostic.goto_next()<CR>', opts)
+  buf_set_keymap('n', '<Leader>q', '<cmd>lua vim.lsp.diagnostic.set_loclist()<CR>', opts)
+  buf_set_keymap('n', '<Leader>f', '<cmd>lua vim.lsp.buf.formatting()<CR>', opts)
+
+  vim.api.nvim_command [[autocmd BufWritePre <buffer> lua vim.lsp.buf.formatting_seq_sync()]]
+end
+
+local servers = { 'rust_analyzer' }
+for _, lsp in ipairs(servers) do
+  nvim_lsp[lsp].setup {
+    on_attach = on_attach,
+  }
+end
+LSPCONFIG

neovim/neosnippets/ruby.snippets

@@ -1,15 +0,0 @@
-snippet sigp
-abbr sig { params(...).returns(...) }
-  sig { params(${1}).returns(${2}) }${0}
-
-snippet sigdo
-abbr sig do params(...).returns(...) end
-  sig do
-    params(
-      ${1}
-    ).returns(${2})
-  end${0}
-
-snippet sigv
-abbr sig { params(...).void}
-  sig { params(${1}).void }${0}