Antigravity 2.0 split (I/O 2026) — package launches the new agent app instead of Antigravity IDE

[BadranRaza]

Hi! I'm the maintainer of BadranRaza/com.unity.ide.antigravity, one of the other community Antigravity-Unity packages. Filing this as a heads-up rather than a bug report — feel free to close as wontfix if it doesn't fit your roadmap.

What changed

At Google I/O 2026 (May 19, 2026) Google split the Antigravity product line into two separate desktop apps:

Product	What it is	Default Windows path
Antigravity (2.0)	Agent-orchestration tool. No code editor.	%LOCALAPPDATA%\Programs\Antigravity\Antigravity.exe
Antigravity IDE	VS Code fork. The actual code editor.	%LOCALAPPDATA%\Programs\Antigravity IDE\Antigravity IDE.exe

Both share the same Code-fork shell, so the standard discovery regex (*Antigravity*.exe) matches both. On machines with both installed, Unity often ends up launching the agent app on every script double-click — and the agent app has no editor surface, so users just stare at the agent home screen instead of their script.

How I fixed it in my fork (in case it's useful)

Three layers:

1. Filename filter — discovery only accepts Antigravity IDE.exe / Antigravity IDE*.app / antigravity-ide[-insiders].

2. Manifest verification — read resources/app/package.json and reject anything whose name field isn't Antigravity IDE. This is defence-in-depth if a user manually Browse...-es to the agent app.

   var manifest = JsonUtility.FromJson<VisualStudioCodeManifest>(File.ReadAllText(manifestFullPath));
   manifestName = manifest.name;
   // …
   if (!string.IsNullOrEmpty(manifestName) &&
       manifestName.IndexOf("Antigravity IDE", StringComparison.OrdinalIgnoreCase) < 0)
       return false;

3. Search-path narrowing — drop the bare Antigravity install dirs from the candidate list entirely.

Process matching for "reuse existing window" features and workspace-storage paths also need updating — AppData/Application Support/.config now use Antigravity IDE subfolders, not Antigravity.

Full write-up with code refs: https://github.com/BadranRaza/com.unity.ide.antigravity/blob/master/Documentation~/antigravity-2-0-fix.md

If you'd rather link to my package than port the change, the README in this fork mentions the trade-offs, but honestly either approach is fine — the goal is just to get fewer Unity devs stuck staring at the agent app's home screen. 🙂

— Badran