Support for environment variables for OpenCode

[ottosulin]

Hi!

When using Google Vertex AI, the configuration requires currently use of environment variables. Relevant OpenCode documentation: https://opencode.ai/docs/providers#google-vertex-ai

The env variables are for most OpenCode users probably in .bashrc or .zshrc.

And because of this OpenWork with Vertex does work for me when I run: OpenWorkTest % open /Applications/OpenWork.app.

It would be great for less technical users to get it load the credentials automatically. OpenWork config does not currently support all of those as configuration options.

My suggestion: allow setting extra environment variables to use when starting opencode. Then a user can easily insert those as instructed in OpenCode docs.

[benjaminshafii]

That's a great idea @ottosulin. We really want to have great coverage of these features, at the same time we want to be mindful of making OpenWork feel more simple. I think the way I'd solve this is I would create some experimental settings only available if dev mode is on.

If you want, feel free to add a PR that experiments with this that can only be visible if the developer mode is turned on in settings.

Relevant screens

A new setting here

[benjaminshafii]

Automated message: this makes sense, especially for providers like Vertex that rely on env vars. A good direction is to let users define env vars in Settings and pass them through when OpenWork spawns OpenCode (host mode).

Can you list the exact variables you need (e.g. GOOGLE_APPLICATION_CREDENTIALS, project IDs, etc.)? That’ll help design a minimal UI that stays aligned with least‑privilege and transparency.

[ottosulin]

For Vertex you would need:

GOOGLE_APPLICATION_CREDENTIALS=/path/to/service-account.json
GOOGLE_CLOUD_PROJECT=your-project-id
GOOGLE_CLOUD_LOCATION=region

I guess the minimal implementation would be just a plain text box with title like "OpenCode environment variables" that would be then passed on when starting OpenCode. There you could add how many variables you need.