feat(flake): repo-root flake.nix packaging + nixpkgs-pin parity gate (RIG-2757, T6) - #642
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…(RIG-2757, T6) Add a repo-root flake.nix packaging the four backend binaries (compass, compass-server, compass-runner, compass-stack — one shared version stamp, Global Constraint 4), the Linux gtk3 cgo native app (compass-app, built against the shared SEA-1172 gtk-closure.nix so the dev shell, e2e helper, and flake cannot drift), and the microVM stack-env trio (cloud-hypervisor + virtiofsd + passt). nixpkgs is pinned to devenv.lock's rev. Because the flake carries its OWN flake.lock — a second independent nixpkgs pin — a devenv bump could silently skew the 'one closure' claim. tools/toolchain/ flake-parity.ts (thin shell over a pure, unit-tested core, mirroring parity.ts) enforces flake.lock's nixpkgs rev == devenv.lock's, wired as the flake-gate moon project (nix-source, ci-group.nix) running nix flake check + the parity gate, affected-gated on the flake build closure. aarch64-darwin is deferred with a TODO (the darwin app links system WebKit, not the gtk closure). Implements DL-259 install surface (flake as the self-host stack's install path). Co-authored-by: Matt Wilkinson <matt@rigel.build>
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Add a repo-root flake.nix packaging the four backend binaries (compass,
compass-server, compass-runner, compass-stack — one shared version stamp,
Global Constraint 4), the Linux gtk3 cgo native app (compass-app, built against
the shared SEA-1172 gtk-closure.nix so the dev shell, e2e helper, and flake
cannot drift), and the microVM stack-env trio (cloud-hypervisor + virtiofsd +
passt). nixpkgs is pinned to devenv.lock's rev.
Because the flake carries its OWN flake.lock — a second independent nixpkgs pin
— a devenv bump could silently skew the 'one closure' claim. tools/toolchain/
flake-parity.ts (thin shell over a pure, unit-tested core, mirroring parity.ts)
enforces flake.lock's nixpkgs rev == devenv.lock's, wired as the flake-gate moon
project (nix-source, ci-group.nix) running nix flake check + the parity gate,
affected-gated on the flake build closure. aarch64-darwin is deferred with a
TODO (the darwin app links system WebKit, not the gtk closure).
Implements DL-259 install surface (flake as the self-host stack's install path).
Co-authored-by: Matt Wilkinson matt@rigel.build