The native Vercel integration in Trigger.dev handles environment variable syncing out of the box, but keeping legacy manual extensions around creates frustrating conflicts. To prevent these overlap issues, the syncVercelEnvVars build extension is now officially deprecated for users of the native integration.
Documentation across the Vercel setup guides has been updated with explicit warnings, advising developers to remove the manual extension. This guarantees variables populate correctly without manual workarounds tripping over the built-in system. For teams explicitly opting out of the Vercel integration, the manual sync approach remains fully supported.