Enforce Settings on a Dependency

Sometimes your service requires specific configuration on a dependency — Bitcoin Core must have txindex=true, or ZMQ must be enabled. A cross-service task fires on the dependency whenever its config drifts from the required values.

Solution

In setupDependencies(), call sdk.action.createTask() targeting the dependency’s autoconfig action (imported from the dependency’s package). Pass input: { kind: 'partial', value: { ... } } with the required field values, and when: { condition: 'input-not-matches', once: false } so the task re-fires whenever the dependency’s config drifts. The autoconfig action must be exported by the dependency and added to your package.json dependencies.

Reference: Dependencies · Tasks

Examples

See startos/dependencies.ts in: fulcrum (txindex + ZMQ on Bitcoin Core), public-pool (ZMQ on Bitcoin Core)