[BUG] Cannot build with Hyperdrive

[Antoine4011]

Describe the bug

Hello, I cannot deploy my app with the hyperdrive binding.

When calling opennextjs-cloudflare build, it shows :

"UserError: When developing locally, you should use a local Postgres connection string to emulate Hyperdrive functionality. Please setup Postgres locally and set the value of the 'WRANGLER_HYPERDRIVE_LOCAL_CONNECTION_STRING_NEON' variable or "NEON"'s "localConnectionString" to the Postgres connection string."

• It's working with pnpm dev (and I understand why I need to have WRANGLER_HYPERDRIVE_LOCAL_CONNECTION_STRING_NEON setup locally)
• But it's not working when trying to deploy this to our worker. It's unclear to me why I would need to have a local postgres to deploy.

Thanks for your help !

Steps to reproduce

1. Add hyperdrive setup to wrangler

        {
          "binding": "NEON",
          "id": "hyperdrive-preview",
        }

2. Build with opennextjs-cloudflare build

Edit: issues seems to be on building, I haven't test the deploy yet

Expected behavior

It should work out of the box

@opennextjs/cloudflare version

1.8.2

Wrangler version

4.38.0

next info output

Operating System:
  Platform: darwin
  Arch: arm64
  Version: Darwin Kernel Version 25.0.0: Mon Aug 25 21:17:51 PDT 2025; root:xnu-12377.1.9~3/RELEASE_ARM64_T6000
  Available memory (MB): 32768
  Available CPU cores: 10
Binaries:
  Node: 22.16.0
  npm: 10.9.2
  Yarn: N/A
  pnpm: 10.16.1
Relevant Packages:
  next: 15.5.2 // There is a newer version (15.5.3) available, upgrade recommended! 
  eslint-config-next: N/A
  react: 19.0.0
  react-dom: 19.0.0
  typescript: 5.9.2

Additional context

No response

[vicb]

Could you please attach a minimal repro (link to a GH repository) here with the exact steps to trigger the error.
Thanks!