Hydra-Build

hydra-build is the translingual home of Hydra's build system, promoted into Hydra itself. It is generated from a common set of DSL sources into every self-hosting dialect (Haskell, Java, Python, Scala, TypeScript, and the four Lisp dialects) and depends only on hydra-kernel.

The modules were extracted from hydra-kernel under #546 (part of the #416 effort to express Hydra's own build/sync system as Hydra modules rather than host-native scripts).

What it provides

• hydra.build.routing — the manifest-derived, fail-loud module-to-package router. Package ownership of a module namespace comes from each package's Manifest.mainModules (never from a hardcoded name prefix); derived DSL/encode/decode names route to their source module's package.
• hydra.build.reconcile — kernel/host reconciliation utilities.
• hydra.build.modules — pure module-list utilities.

Status

These modules are pure and behavior-stable; they are consumed today only by characterization tests. Driver migration — having the sync drivers themselves import and call these modules — is tracked separately under #416 Step 4. Future hydra.build.* modules (json, manifest, libpass, digest, matrix) are authored directly into this package.