Prevent workspace dependencies from failing on missing bundle

lib/ruby_lsp/executor.rb

@@ -223,15 +223,7 @@ def run(request)
       when "rubyLsp/textDocument/showSyntaxTree"
         show_syntax_tree(uri, request.dig(:params, :range))
       when "rubyLsp/workspace/dependencies"
-        dep_keys = Bundler.definition.locked_deps.keys.to_set
-        Bundler.definition.specs.map do |spec|
-          {
-            name: spec.name,
-            version: spec.version,
-            path: spec.full_gem_path,
-            dependency: dep_keys.include?(spec.name),
-          }
-        end
+        workspace_dependencies
       else
         VOID
       end
@@ -262,6 +254,21 @@ def did_change_watched_files(changes)
       VOID
     end
 
+    def workspace_dependencies
+      definition = Bundler.definition
+      dep_keys = definition.locked_deps.keys.to_set
+      definition.specs.map do |spec|
+        {
+          name: spec.name,
+          version: spec.version,
+          path: spec.full_gem_path,
+          dependency: dep_keys.include?(spec.name),
+        }
+      end
+    rescue Bundler::GemfileNotFound
+      []
+    end
+
     sig { void }
     def perform_initial_indexing
       # The begin progress invocation happens during `initialize`, so that the notification is sent before we are