1 files changed, 42 insertions, 25 deletions
diff --git a/lua/lvim/lsp/manager.lua b/lua/lvim/lsp/manager.lua
index dbb7b87f..7a35f1ff 100644
--- a/lua/lvim/lsp/manager.lua
+++ b/lua/lvim/lsp/manager.lua
@@ -45,48 +45,65 @@ local function buf_try_add(server_name, bufnr)
   require("lspconfig")[server_name].manager.try_add_wrapper(bufnr)
 end
 
+-- check if the manager autocomd has already been configured since some servers can take a while to initialize
+-- this helps guarding against a data-race condition where a server can get configured twice
+-- which seems to occur only when attaching to single-files
+local function client_is_configured(server_name, ft)
+  ft = ft or vim.bo.filetype
+  local active_autocmds = vim.split(vim.fn.execute("autocmd FileType " .. ft), "\n")
+  for _, result in ipairs(active_autocmds) do
+    if result:match(server_name) then
+      return true
+    end
+  end
+  return false
+end
+
 ---Setup a language server by providing a name
 ---@param server_name string name of the language server
 ---@param user_config table [optional] when available it will take predence over any default configurations
 function M.setup(server_name, user_config)
   vim.validate { name = { server_name, "string" } }
 
-  if lvim_lsp_utils.is_client_active(server_name) then
+  if lvim_lsp_utils.is_client_active(server_name) or client_is_configured(server_name) then
+    Log:debug(string.format("[%q] is already configured. Ignoring repeated setup call.", server_name))
     return
   end
-  local servers = require "nvim-lsp-installer.servers"
 
   local config = resolve_config(server_name, user_config)
+
+  local servers = require "nvim-lsp-installer.servers"
   local server_available, requested_server = servers.get_server(server_name)
 
-  if server_available then
-    local install_notification = false
-
-    if not requested_server:is_installed() then
-      if lvim.lsp.automatic_servers_installation then
-        Log:debug "Automatic server installation detected"
-        requested_server:install()
-        install_notification = true
-      else
-        Log:debug(requested_server.name .. " is not managed by the automatic installer")
-      end
-    end
+  local is_overridden = vim.tbl_contains(lvim.lsp.override, server_name)
 
-    requested_server:on_ready(function()
-      if install_notification then
-        vim.notify(string.format("Installation complete for [%s] server", requested_server.name), vim.log.levels.INFO)
-      end
-      install_notification = false
-      requested_server:setup(config)
-    end)
-  else
-    -- since it may not be installed, don't attempt to configure the LSP unless there is a custom provider
-    local has_custom_provider, _ = pcall(require, "lvim/lsp/providers/" .. server_name)
-    if has_custom_provider then
+  if not server_available or is_overridden then
+    pcall(function()
       require("lspconfig")[server_name].setup(config)
       buf_try_add(server_name)
+    end)
+    return
+  end
+
+  local install_notification = false
+
+  if not requested_server:is_installed() then
+    if lvim.lsp.automatic_servers_installation then
+      Log:debug "Automatic server installation detected"
+      requested_server:install()
+      install_notification = true
+    else
+      Log:debug(requested_server.name .. " is not managed by the automatic installer")
     end
   end
+
+  requested_server:on_ready(function()
+    if install_notification then
+      vim.notify(string.format("Installation complete for [%s] server", requested_server.name), vim.log.levels.INFO)
+    end
+    install_notification = false
+    requested_server:setup(config)
+  end)
 end
 
 return M