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Michał Pierzchała
ef118b9d11
Splits the test app's build caching by context instead of running one remote cache for both. Locally, `expo run:*` caches the native build on disk via the expo-build-disk-cache provider, keyed by the Expo fingerprint. A second run with no native change reuses the first build; a screen edit never rebuilds, because Metro serves JS. This is the original ask — "next time we don't build unless native changes" — and needs no token, no network, and no custom provider. In CI, test-app-build-cache.yml builds a Release binary per platform when the fingerprint has no artifact yet, and publishes it as a GitHub Actions artifact named `fingerprint.<hash>.<platform>`. Release, not dev-client, so the JS bundle is embedded and a consuming job needs no Metro. setup-fixture-app installs it by downloading the artifact and refreshing the JS with @expo/repack-app, so keying on the native-only fingerprint stays correct — a JS-only change reuses the same native binary in seconds. It falls back to an inline build when no artifact exists yet, so a caller is never left without an app. Release removes the sharp edges the dev-client cache needed. Its simulator .app is universal (x86_64+arm64) rather than the active-arch-only slice a debug build emits, so no architecture tag. It links against the SDK but loading is gated by the deployment target, which the fingerprint already covers, so no toolchain tag. And the CLI only narrows *debug* builds to the device ABI, so a Release APK spans every ABI without the undocumented --all-arch flag. The artifact name collapses to fingerprint plus platform. This deletes build-cache-provider.js entirely — with it goes the custom Expo provider that had to reach GitHub from inside @expo/cli, and every workaround that forced: the fetch-nodeshim User-Agent shim, the arch/Xcode identity, the upload-intent handoff. CI now talks to the artifacts API with plain `gh api` outside the patched fetch, and locally the disk cache never hits the network. The fingerprint comes from @expo/fingerprint's own `fingerprint:generate` (no --platform, matching what @expo/cli hashes). Gitignoring /ios and /android is what makes it machine-independent: the library asks the VCS whether the platform markers are ignored and, concluding CNG, skips hashing them — so a developer's prebuild output and a fresh CI checkout agree. conformance-differential consumes setup-fixture-app, so it gains `permissions: actions: read` for the artifact lookup. The artifact lookup is non-fatal: a query outage leaves the id empty and falls through to an inline build like a miss does, rather than exiting the composite under set -e and turning a cache blip into a caller failure. test/scripts/setup-fixture-app-fallback-smoke.sh drives that step's real shell against a failing gh and asserts source=build; ci.yml runs it.