Thirty-three module-eval fixtures were a second (or later) full
`nixosSystem` evaluation of a config another fixture already evaluated:
16 shapes defined identically in two to seven cluster files, plus
duplicates inside agent-queue-bao, core-toggle and
swarm-services-switch. Each cluster imports ./lib.nix itself, so nothing
was shared between them.
nix/module-eval/shared.nix now defines each of those 16 shapes once.
nix/checks.nix instantiates it a single time and passes it as `shared`
to the 23 clusters that read one, and each cluster rebinds the fixture
under its existing local name. Assertions are unchanged. Case text
changes only in core-toggle, where two cases built the forge-host
fixture inline and now read the file's `forgeHere`, and in two inline
`let` bindings (bao-otel-collector, grafana) that now take the shared
fixture.
Six folds are value-equal rather than textually equal: they drop an
explicit `deploy.hive-controller.enable = false` or
`deploy.swarm-otel.enable = false` that equals what the option already
resolves to for that config. Nothing under nix/host-modules sets either
option apart from the `mkDefault allSwarmServices` on swarm-otel, and
the only option-priority read there is `domain.highestPrio`.
Part of #5171.
Drop the eval assertion b78190e1 added. It refused every self-signed
gateway host that does not run the store, which is the default hive
shape, and contradicts docs/swarm/secrets.md's supported no-store
deployment. The approved #4921 plan has such a host evaluate and fail
at runtime; `requireServicesIssuer` already exits 1 naming both
options, on the root-fetch branch and before issuing.
The module-eval case that pinned `hiveWithController { }` as refused
now pins it, and a hive-less gateway with no pair, as evaluating with
the unit's refusal in the script. The fixture pairs the assertion
forced into forge-placement, nats-tls and swarm-otel-identity are
reverted.
Refs #4921
swarm-services-cert issues the swarm-services leaf a self-signed gateway
serves, and on a host fronting no swarm name fetches the store's pki root.
It is gated on the gateway, not on a hive, yet its leaf pair was named
under deploy.hive-controller.tls and defaulted from the hive reader's cert
directory, and the root fetch presented the hive's own identity. A gateway
host with no hive had no such identity, so that branch was red by
construction.
- The pair moves to deploy.bao.servicesIssuerClient{Cert,Key}File, beside
the store's other host-unit readers, and glue-bao-tls.nix defaults it on
the store's host from the leaf it already mints. The old
deploy.hive-controller.tls.baoClient{Cert,Key}File paths are
mkRenamedOptionModule aliases. glue-services-issuer-bao-identity.nix,
which derived the default from deploy.bao.clientCertFile, is gone.
- The no-swarm-name root fetch presents the services-issuer pair. The hive
identity is now only hive-tls-resign's.
- A self-signed gateway with no pair fails evaluation, naming both options.
A pair named but unreadable still fails the unit, naming the paths.
Refs #4921
The four-way client-cert split gives each store reader its own leaf, and
three of the four readers render only where their own leaf exists. On a
host that mints its own PKI glue-bao-tls.nix defaults all eight, so there
is nothing to do; on a hand-configured remote-store hive, omitting one
pair used to mean that unit silently did not render — a privilege-
narrowing unit absent from a green build, with the missing unit as the
only evidence.
Each of the three now asserts its own pair, shaped after
swarm-grafana.nix's haveClientIdentity assertion and named to the pair it
needs. What differs from Grafana's is the gate: these fire only where the
host demonstrably reads the store (it holds deploy.bao.clientCertFile and
clientKeyFile) and the consumer is on. A host with no store identity is
the supported no-store deployment and still evaluates; the collector's
no-secret degrade is untouched, because that host holds no clientCertFile
either.
Also rewords three passive-voice sentences in docs/swarm/secrets.md that
vale flagged, and documents what the refusal costs and where it stays
silent.
The single module-eval derivation forced ~62 full nixosSystem
fixtures live at once to compute its cases list: 10.6GB peak RSS /
5m25s to evaluate, by far the dominant cost in nix flake check.
Splits it into 21 independent checks.module-eval-* derivations
(1-7 fixtures each) sharing builders/helpers via module-eval/lib.nix,
so no single derivation needs more than a handful of fixtures live
at once. A few cases spanning two clusters carry a small duplicated
fixture rather than threading shared state through lib.nix.
