StartOS

What's Changed

Fixed

• Daemons.dynamic now composes with setupMain instead of replacing it. main is always sdk.setupMain(...); what varies is the DaemonBuildable you return from it — a static sdk.Daemons.of(...) chain, or the reconciler for a runtime-varying daemon set. The OS ABI has always said as much (ExpectedExports.main returns a DaemonBuildable, and both Daemons and DaemonsReconciler implement it), but two signatures made that composition unwritable: setupMain demanded a Daemons rather than the ABI's DaemonBuildable, and Daemons.dynamic(fn) returned a main export — burying the DaemonsReconciler it constructs inside a closure. The only shape that compiled was the wrong one: replace main with Daemons.dynamic(...), then nest Daemons.of() inside its builder. Packages adopting dynamic daemons were funnelled straight into it. Now:

  • Breaking — Daemons.dynamic takes effects and returns the reconciler: sdk.Daemons.dynamic(effects, fn): DaemonsReconciler (was sdk.Daemons.dynamic(fn): main). Return it from setupMain.
  • setupMain's callback is widened to the ABI: it accepts any T.DaemonBuildable.

  Migration — wrap the builder in setupMain and pass effects:

  // before (2.0.0–2.0.3)
  export const main = sdk.Daemons.dynamic(async ({ effects }) => {
    return sdk.Daemons.of(effects).addDaemon(...)
  })
  
  // after
  export const main = sdk.setupMain(async ({ effects }) => {
    return sdk.Daemons.dynamic(effects, async ({ effects }) => {
      return sdk.Daemons.of(effects).addDaemon(...)
    })
  })
  

  Reconcile semantics are unchanged: inside the builder, constRetry reruns-and-reconciles rather than firing effects.restart(), so a watched-state change touches only the daemons whose configHash moved and the service stays running. Reported in #3470