Saugus

Saugus is the 2140 deployment of Ironworks.

Ironworks defines the reusable build, CI, release, and infrastructure library. Saugus consumes that library for the 2140 production deployment: Hydra, builders, benchmark workers, cache policy, lock branches, host inventory, and operational runbooks.

The deployment flake consumes the production repositories:

github:2140-dev/ironworks
git+https://github.com/2140-dev/bitcoin.git?ref=master

staging-lock and release-lock/<version> branches replace the source ref with exact source and Ironworks revisions before Hydra evaluates forge or temper.

Evaluation

nix fmt
nix flake check --no-build --all-systems --print-build-logs
nix eval .#hydraJobs.x86_64-linux --apply builtins.attrNames
nix eval .#nixosConfigurations.hydra.config.services.hydra.hydraURL

Saugus exports a stage-filtered hydraJobs tree for production Hydra. master defaults to spark/correctness; lock branches write locks/hydra-stage.json so staging-lock exposes forge/staging, harden-lock exposes harden/scheduled, and release lock branches expose temper/release. This keeps Hydra flake jobsets from duplicating the full Ironworks graph.

The scheduled harden jobset is exported for observation while fixture-backed IBD, previous-release, and long-fuzz jobs are still being replaced. stamp remains visible through the Ironworks stage catalog but is not exported as an active jobset yet.

Host

The initial Hydra host is exposed as:

nixosConfigurations.hydra

The host is installable through nixos-anywhere; hosts/hydra/disko.nix currently targets the discovered Hetzner disks on 167.235.5.73.

See docs/install.md for the Rescue boot, disk inventory, install, and first login flow. See docs/cache.md for the current binary cache trust settings.