feat(ada_ls): alire.toml #3667

Author: eliericha

lua/lspconfig/configs/ada_ls.lua

@@ -4,15 +4,17 @@ return {
   default_config = {
     cmd = { 'ada_language_server' },
     filetypes = { 'ada' },
-    root_dir = util.root_pattern('Makefile', '.git', '*.gpr', '*.adc'),
+    root_dir = util.root_pattern('Makefile', '.git', 'alire.toml', '*.gpr', '*.adc'),
   },
   docs = {
     description = [[
 https://github.com/AdaCore/ada_language_server
 
 Installation instructions can be found [here](https://github.com/AdaCore/ada_language_server#Install).
 
-Can be configured by passing a "settings" object to `ada_ls.setup{}`:
+Workspace-specific [settings](https://github.com/AdaCore/ada_language_server/blob/master/doc/settings.md) such as `projectFile` can be provided in a `.als.json` file at the root of the workspace.
+
+Alternatively, configuration may be passed as a "settings" object to `ada_ls.setup{}`:
 
 ```lua
 require('lspconfig').ada_ls.setup{