feat(nix): package the gates as a reproducible flake (runtime-bundled bins)#13
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…, runtime-bundled bins) A third consumption model alongside vendoring + npm: a nix flake exposing every ck-* gate/generator as a hermetic, pinned CLI — fitting the bounded-systems nix-everything ecosystem (tezcatl-flake et al.) and the kit's reproducibility ethos. The win beyond consistency: each bin bundles the runtime it shells out to, so it is self-contained (the way tezcatl-flake bundles WebKit): • ck-html-validator-gate carries a JRE (vnu is a Java jar) • ck-vuln-gate carries npm (for `npm audit`) — verified each runs with NO java/node on $PATH. The other gates are pure Node + their bundled node_modules. (ck-axe-gate still needs a browser via $AXE_RUNNER.) nix run github:bounded-systems/conformance-kit#ck-axe-gate -- dist flake.nix (buildNpmPackage, npmDepsHash pinned, dontNpmBuild) + flake.lock; README documents the third model. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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"Shouldn't we use flakes for bins?" — yes. A third consumption model alongside vendoring + npm: a nix flake exposing every
ck-*gate/generator as a hermetic, pinned CLI. Fits the bounded-systems nix-everything ecosystem (tezcatl-flake et al.) and the kit's reproducibility ethos.The win beyond consistency
Each bin bundles the runtime it shells out to, so it's self-contained — the way
tezcatl-flakebundles WebKit:ck-html-validator-gatecarries a JRE (vnu is a Java jar)ck-vuln-gatecarries npm (fornpm audit)Verified each runs with no java/node on
$PATH. The other gates are pure Node + their bundlednode_modules. (ck-axe-gatestill needs a browser via$AXE_RUNNER: tezcatl / Playwright.)What
flake.nix—buildNpmPackage(npmDepsHash pinned,dontNpmBuild), per-binapps, JRE/npm wraps.flake.lock; README documents the third model.Verification (local)
nix buildsucceeds;ck-vuln-gate/ck-html-validator-gate/ck-baseline-gateall run from the store with no runtime on$PATH;nix run .#ck-baseline-gatefails closed correctly. (npm teststill 17/0.)Maintenance note
npmDepsHashis pinned — whenpackage-lock.jsonchanges, recompute vianix run nixpkgs#prefetch-npm-deps -- package-lock.json. Anix flake checkCI job would catch drift (follow-up).🤖 Generated with Claude Code