Function buildGbrainEnv

lib/gbrain-exec.ts:96–125

(opts: BuildGbrainEnvOptions = {})

 * object identity.
 */
export function buildGbrainEnv(opts: BuildGbrainEnvOptions = {}): NodeJS.ProcessEnv {
  const baseEnv = opts.baseEnv || process.env;
  const out: NodeJS.ProcessEnv = { ...baseEnv };
  if (baseEnv.GSTACK_RESPECT_ENV_DATABASE_URL === "1") return out;

  const homeBase = baseEnv.HOME || homedir();
  const gbrainHome = baseEnv.GBRAIN_HOME || join(homeBase, ".gbrain");
  const configPath = join(gbrainHome, "config.json");
  if (!existsSync(configPath)) return out;

  let cfg: GbrainConfig = {};
  try {
    cfg = JSON.parse(readFileSync(configPath, "utf-8")) as GbrainConfig;
  } catch {
    return out;
  }
  if (!cfg.database_url) return out;

  const hadCaller = baseEnv.DATABASE_URL !== undefined;
  const alreadyMatch = baseEnv.DATABASE_URL === cfg.database_url;
  if (!alreadyMatch) {
    out.DATABASE_URL = cfg.database_url;
    if (opts.announce) {
      const note = hadCaller ? " (overrode value from caller env / .env.local)" : "";
      process.stderr.write(`[gbrain-exec] seeded DATABASE_URL from ${configPath}${note}\n`);
    }
  }

  return out;
}

/**
 * Windows can't directly spawn the `gbrain` launcher (bun/npm install it as a