feat: settings stratification + parametric-aspect injection (Spike 5 demo)#1
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Old pin (908ea70) predated mkAspectSchema; demo failed to eval standalone. Bump to current HEAD so the settings cascade evaluates without --override-input.
gen-algebra#1 merged; demo cascade proofs now eval without --override-input gen-algebra (only the gen-aspects override remains until this PR merges).
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gen-algebra#1 merged. Bumped the demo |
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Summary
Makes the
examples/demofaithfully prove Spike 5 — adefault < env < host < policysettings cascade with full provenance, settings composing onto parametric aspects, and resolved settings injected back into parametric class content.composition.nixfolds the policy patch as the final layer viarecord.foldLayersTraced; per-host gen-derive dispatch (act.configure), layer labels from a parallelraw-settings-idsneron attribute, full provenance surfaced.firewallbecomes parametric (static settings schema + settings-consumingnixos),hardeningdemoted to plain.injection.nixinjectAspectSettingsinjects resolvedcomposedSettings.<host>.<leaf>into each aspect's class content viagen-bind(demo-local prototype; graduation togen-aspects.libdeferred). nginx refactored to a second parametric aspect, proving the construct generalizes.outputs.nix): firewall + nginx full loops, policy-overrides-host (discriminating), negative control, append accumulation, recursive per-subkey provenance.Design spec:
~/Documents/papers/den-architecture/specs/2026-05-31-settings-stratification-injection-design.md.Dependency / required follow-up
record.foldLayersTraced). The demo'sflake.lockcurrently pins agen-algebrawithout that function, so the cascade proofs require--override-input gen-algebra <local>until feat: settings stratification + parametric-aspect injection (Spike 5 demo) #1 merges.examples/demo/flake.lockgen-algebrato the merged rev — then the demo evals standalone.Test Plan
nix eval .#fwInjectionMatchesCascade→true(firewall: resolved+appended cascade ports == injectedallowedTCPPorts)nix eval .#nginxInjectionResolved→true(nginx: resolved settings renderworker_processes 32).#loggingLevelProdWeb1→"error"(policy overrides env"warn"— proves policy folds last).#workersProdWeb1Winner→"host"(negative control — policy doesn't blanket-override).#dbBackupSubkeyProvenance→{schedule=policy; retention=policy; method=host; destination=host}(recursive per-subkey)--override-inputafter the gen-algebra lock bumpnix flake checkfailure inqueries.nix(observabilityattr) predates this branch and is out of scope.