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feat(coding-agent): add Nix flake (#9137)

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Add a Nix flake that builds Pi from the checkout on aarch64/x86_64 Linux
and macOS. The build is offline: provider model data is hydrated from a
pi.dev model catalog revision pinned in nix/model-catalog.json, and the
runtime dependency tree comes from packages/coding-agent/install-lock with
internal packages built from source.

The Nix workflow keeps the catalog pin current on main, builds release
tags on all systems, and fast-forwards the stable branch to each release
that builds. The release script refreshes the pin before tagging.
This commit is contained in:
Armin Ronacher 2026-10-02 18:30:51 +02:00 • committed by GitHub
parent 4665fafb4d
commit c71a496ff9
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6
.pi/skills/release.md
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@ -41,8 +41,10 @@ Run repository commands from the repo root (two directories above this skill), u
```
Use `npm_config_min_release_age=0` only for the release command. The repo's normal npm age gate can otherwise block the release lockfile refresh when the current workspace package version was published recently. Review any lockfile or install lock diffs the release creates before push.
The release script bumps all package versions, updates changelogs, regenerates release artifacts, runs `npm run check`, commits `Release vX.Y.Z`, tags `vX.Y.Z`, adds fresh `## [Unreleased]` changelog sections, commits `Add [Unreleased] section for next cycle`, then pushes `main` and the tag. Do not rerun the release script after a tag was pushed.
The release script refreshes the Nix model catalog pin (`nix/model-catalog.json`) if stale, bumps all package versions, updates changelogs, regenerates release artifacts, runs `npm run check`, commits `Release vX.Y.Z`, tags `vX.Y.Z`, adds fresh `## [Unreleased]` changelog sections, commits `Add [Unreleased] section for next cycle`, then pushes `main` and the tag. Do not rerun the release script after a tag was pushed.
4. **CI verifies and announces the npm release**: pushing the `vX.Y.Z` tag triggers `.github/workflows/build-binaries.yml`. The `publish-npm` job uses npm trusted publishing through GitHub Actions OIDC with environment `npm-publish`; no local `npm publish`, `npm whoami`, OTP, or WebAuthn flow is required. After publishing, `announce-pi-dev-release` verifies every public workspace package resolves at the exact release version and that its npm tarball is available, then writes the verified release marker to R2. `pi.dev/api/latest-version` reads that marker; it must never announce a release from npm before this job succeeds.
5. **If CI publish or announcement fails**: inspect the failed job. The publish helper is idempotent and skips package versions already present on npm; the announcement job rechecks availability before updating the R2 marker. Rerun the failed job or workflow after fixing CI or transient npm issues. Do not rerun `npm run release:patch` or `npm run release:minor` for the same version.
5. **CI builds the Nix release**: the tag push also triggers `.github/workflows/nix.yml`, which builds the tagged flake on Linux and macOS and then fast-forwards the `stable` branch to the release commit. `nix run github:earendil-works/pi/stable` runs the latest release. If the Nix build fails, `stable` stays on the previous release; the tag cannot be fixed, so fix `main` and ship the fix in the next release.
6. **If CI publish or announcement fails**: inspect the failed job. The publish helper is idempotent and skips package versions already present on npm; the announcement job rechecks availability before updating the R2 marker. Rerun the failed job or workflow after fixing CI or transient npm issues. Do not rerun `npm run release:patch` or `npm run release:minor` for the same version.