Neovim: switch lsp to use mason automatic setup

home/.config/nvim/lua/plugins/mason.lua

@@ -0,0 +1,91 @@
+local m = {}
+
+function m.setup()
+  local function on_attach()
+    -- Setup lsp signature plugin
+    require("lsp_signature").setup({})
+
+    -- Setup keybinds
+    m.map_keys()
+  end
+
+  -- Inform lsp about completion capabilities from cmp
+  local capabilities = require("cmp_nvim_lsp").default_capabilities()
+
+  require("mason").setup()
+  local mason_lsp = require("mason-lspconfig")
+  mason_lsp.setup()
+
+  mason_lsp.setup_handlers({
+    -- Default handler
+    function(server_name)
+      require("lspconfig")[server_name].setup({
+        on_attach = on_attach,
+        capabilities = capabilities,
+      })
+    end,
+
+    -- Override lua_ls settings
+    ["lua_ls"] = function()
+      require("lspconfig").lua_ls.setup({
+        on_attach = on_attach,
+        capabilities = capabilities,
+        settings = {
+          Lua = {
+            runtime = {
+              -- Tell the language server which version of Lua you're using (most likely LuaJIT in the case of Neovim)
+              version = "LuaJIT",
+            },
+            diagnostics = {
+              -- Get the language server to recognize the `vim` global
+              globals = { "vim" },
+            },
+            workspace = {
+              -- Make the server aware of Neovim runtime files
+              library = vim.api.nvim_get_runtime_file("", true),
+            },
+            -- Do not send telemetry data containing a randomized but unique identifier
+            telemetry = { enable = false },
+          },
+        },
+      })
+    end,
+  })
+end
+
+function m.map_keys()
+  local wk = require("which-key")
+  wk.register({
+    g = {
+      name = "Go to",
+      d = { vim.lsp.buf.definition, "Definition" },
+      D = { vim.lsp.buf.declaration, "Declaration" },
+      i = { vim.lsp.buf.implementation, "Implementation" },
+      r = { vim.lsp.buf.references, "References" },
+    },
+    ["<leader>"] = {
+      name = "Leader",
+      w = {
+        name = "Workspace",
+        a = { vim.lsp.buf.add_workspace_folder, "Add folder" },
+        r = { vim.lsp.buf.remove_workspace_folder, "Remove folder" },
+        l = {
+          function()
+            print(vim.inspect(vim.lsp.buf.list_workspace_folders()))
+          end,
+          "List folders",
+        },
+      },
+      D = { vim.lsp.buf.type_definition, "Type definition" },
+      rn = { vim.lsp.buf.rename, "Rename symbol" },
+      ca = { vim.lsp.buf.code_action, "Code action" },
+      e = { vim.diagnostic.open_float, "Open diagnostics" },
+      f = { vim.lsp.buf.format, "Format" },
+    },
+    K = { vim.lsp.buf.hover, "Hover" },
+    ["["] = { d = { vim.diagnostic.goto_prev, "Previous diagnostic" } },
+    ["]"] = { d = { vim.diagnostic.goto_next, "Next diagnostic" } },
+  })
+end
+
+return m