disable based pyright language services if installed

Summary: if pyrefly is installed and language services are enabled, turn off basedpyright language services to not conflict

Reviewed By: migeed-z

Differential Revision: D88676060

fbshipit-source-id: bd18df9a1d533e410198aba628253306d229ff76

Author: kinto0

lsp/src/extension-interop.ts

@@ -49,3 +49,18 @@ export async function disableWindsurfPyrightIfInstalled() {
     await config.update(setting, true, vscode.ConfigurationTarget.Global);
   }
 }
+
+/**
+ * This function checks if the Based Pyright extension is installed, and if so,
+ * disables its language services to avoid conflicts with Pyrefly.
+ */
+export async function disableBasedPyrightIfInstalled() {
+  const basedPyrightExtension = vscode.extensions.getExtension(
+    'detachhead.basedpyright',
+  );
+  if (basedPyrightExtension) {
+    const config = vscode.workspace.getConfiguration('basedpyright');
+    const setting = 'disableLanguageServices';
+    await config.update(setting, true, vscode.ConfigurationTarget.Global);
+  }
+}

lsp/src/extension.ts

@@ -27,6 +27,7 @@ import {runDocstringFoldingCommand} from './docstring';
 import {
   triggerMsPythonRefreshLanguageServers,
   disableWindsurfPyrightIfInstalled,
+  disableBasedPyrightIfInstalled,
 } from './extension-interop';
 
 let client: LanguageClient;
@@ -235,6 +236,14 @@ export async function activate(context: ExtensionContext) {
   // Disable Windsurf Pyright language services if the extension is installed
   await disableWindsurfPyrightIfInstalled();
 
+  // Disable Based Pyright language services if the extension is installed and Pyrefly is enabled
+  const pyreflyDisabled = vscode.workspace
+    .getConfiguration('python.pyrefly')
+    .get<boolean>('disableLanguageServices', false);
+  if (!pyreflyDisabled) {
+    await disableBasedPyrightIfInstalled();
+  }
+
   // Start the client. This will also launch the server
   await client.start();