Can't access env vars in Workers build

[rotund comet]

I'm migrating some Astro projects, that build static pages, from Cloudflare Pages to Cloudflare Workers. I'm following the migration tutotial and looking the docs. But I 'cant access the environment variables defined in wrangler.toml in process.env during or after the build.
I using the compat flags:
compatibility_flags = [ "nodejs_compat", "nodejs_compat_populate_process_env" ]
But in any moment i'm seeing the variables in log
Is there anything else i need to do?

[zealous peak]

Have you added those variables to Settings > Build > Build Variables and Secrets? Or do you mean they aren't present once deployed

[rotund comet]

I added some secrets in the panel, in this path you mentioned.
But i have others vars that are defined in wrangler.toml
The secrets from panel appear in process.env, but the vars from wrangler.toml dont

[zealous peak]

To confirm, you are logging process.env during the build right, not against your deployed Worker?

[rotund comet]

Yes. I'm lookin in the Build history log

[zealous peak]

Yeah, that's expected. The variables in your wrangler.toml/jsonc are the variables present on your deployed Worker. They wouldn't be available in the build environment

[rotund comet]

Ohh. That's a bummer
In build time the only env vars present is the ones defined via panel?

[zealous peak]

Yes, that's correct

For example, if you have a build variable configuring the version of Node you need to build your project, it wouldn't make sense to add that to the deployed Worker, and vice versa

[rotund comet]

Thats makes sense. Is there another way to define build vars for workers, or only in the panel?

[zealous peak]

I think it is only via the panel right now?

Maybe the API?