The builder pushes its build metrics (builds by kind and outcome, build
duration, queue depth and wait, reply publish failures) to its forwarder's
OTLP receiver, which relays them to the swarm collector.
It also registers the standard store client-certificate gauges
(bao.client_cert.*, cert=builder) on the same exporter. They are the
builder's liveness signal: exported every minute whether or not a build
runs. The cert-metrics table in docs/scheduler/observability.md gains the
builder row.
A new update_meta node renders internal/meta's flake.nix with
hive-meta-flake, the renderer hive-c0re uses: hyperhive pinned to its
forge main, each custom agent a hive places pinned to its agent-configs
main, all over https, and the swarm-wide values from
SWARM_CONTROLLER_META_FLAKE (set by swarm-controller.nix from
services.hyperhive.swarm.*). The swarm builder locks it, and the
controller commits flake.nix and flake.lock in one commit and gives
every hive's forge account read on the repo. A render equal to the
committed flake.nix sends no lock and commits nothing.
It runs at start, when hyperhive's main moves, before the deploy of a
merged config PR and before the first deploy of a new agent; those
deploys now wait for it. agent_web_port moves into hive-meta-flake so
both callers compute the same port; hive-c0re re-exports it.
On deploy: internal/meta appears on the forge and follows every merge.
No hive builds from it yet.
Refs #4857
A flake declares agent archetypes in its `hyperhiveArchetypes` output,
`<name> = { module; meta; }`. The hyperhive flake ships `reviewer`
(default permissions without `execution`).
swarm-builder answers `$SWARM.builder.archetypes` with the `meta` of
every archetype its own hyperhive source declares. swarm-controller asks
once the queue connects and every 10 minutes, checks each archetype as
`POST /api/agents` checks its settings, and stores the result in the
`agent-archetypes` KV bucket when it changed. `GET /api/archetypes`
serves it, and the create form's archetype select prefills permissions,
resource caps and inference from it.
The agent created is an ordinary agent with its own config repo; the
archetype's module is not applied yet.
Refs #5386
The builder reads its queue client secret at start and again when
authelia refuses it. The credentials table in builder.md and the
swarm-builder README still said it was read only at start.
argus's review on #5177: the git credential helper answered every `get`,
so a config PR's own flake inputs could have git send the builder's forge
token to any host. The helper is now configured under
`credential.<forge-url>.helper` and itself answers only an https request
whose host is the forge's; a test runs it as git does and checks that
other hosts, http and non-get operations get nothing.
Builds are bounded: every `build_agent` node needs the one `builder` jobq
resource, so one runs at a time and the rest wait pending, and a newer
head cancels its PR's pending build (a running one finishes and writes on
its own commit). The builder also holds a one-permit semaphore around each
build.
`builder` and `review-classifier`, the forge logins swarm-controller owns,
join nix/reserved-names.nix, with a test tying the list to both constants.
The builder is now opt-in like the CI runner: `allSwarmServices` no longer
turns it on, since it runs unreviewed config PRs through the host's nix
daemon. mara had not answered atlas's question on the PR.
A new `swarm-builder` service, in its own container on the host that sets
`deploy.builder.enable` (defaulted on by `allSwarmServices` where the host
has the builder's store leaf, like the review classifier).
When an `agent-configs/<agent>` PR is opened, reopened or synchronized,
swarm-controller queues a `build_agent` jobq node. The node sets a
`swarm-builder` commit status to pending on the PR head, sends
`{agent, rev, pr}` to the builder over NATS request-reply
(`$SWARM.builder.build`), and writes success (store path), failure (last
line nix printed) or error (no builder / no reply) on the head. The node
fails when the build does, so the Jobs page matches the PR.
The builder builds nix/builder/check-flake's `check` with every input
overridden: hyperhive and nixpkgs to the host's own
`c0re.hyperhiveFlake`/`c0re.nixpkgsFlake` (what a hive there renders into
its meta flake), and the agent to the PR head on the forge. Evaluation is
pure and runs in the container; builds go to the host nix daemon as an
untrusted client. The private config repo is fetched with the token of a
new read-only `builder` forge account (in the `hives` team), which the
controller mints into `swarm/services/builder/forge/token`; git gets it
from a credential helper reading the child's environment, so it is in no
argument or URL.
Credentials: a `builder` store leaf minted by glue-bao-tls on the store
host, a `swarm-builder` reader policy (forge token + its own OIDC client
secret), an authelia machine client, and a `--builder-client` grant in the
queue's auth-callout responder. The controller gains a grant on the token
path and the secret publisher a deny on it.
This is the agent-config build check atlas scoped on #5081 (slice 3):
nothing is pushed to a cache, nothing is written to KV, and a red status
gates no deploy. The check composes agent-base + the config without the
values a hive adds (CA, docs, claude-code path, ports, input follows), so
it can disagree with a hive's own build.
