fix(support): record the builder image the guest build actually pulls - #1854
fix(support): record the builder image the guest build actually pulls#1854Toby1009 wants to merge 3 commits into
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The manifest read risc0-build's compiled-in DEFAULT_DOCKER_TAG, r0.1.88.0.
risc0-build resolves the tag as RISC0_DOCKER_CONTAINER_TAG, then whatever the
caller set on DockerOptions, then that default (config.rs:59-70), and
crates/support/methods/build.rs:90-95 always sets the second from
ARG RISC0_TOOLCHAIN. The default is therefore unreachable from this repository,
so the manifest named a builder the build never pulls. Running it printed
"tag": "risczero/risc0-guest-builder:r0.1.88.0" beside
"risc0GuestToolchain": "1.91.1".
Derive the tag the same way build.rs does. Verified against a real
RISC0_USE_DOCKER=1 build, which resolves
FROM docker.io/risczero/risc0-guest-builder:r0.1.91.1@sha256:fafb377a44e1cfca415577c48d2f7012bda99ed36f2fae27f9a663b9fe6048f0,
the digest the manifest now records. build.builderImage.digest also leaves the
unresolved list, because the tag now names an image the build put on the
machine.
Two adjacent defects in the same lines, both present before this change:
RISC0_DOCKER_CONTAINER_TAG is a bare tag, not an image reference. risc0-build
formats risczero/risc0-guest-builder:<tag> from it at docker.rs:145-149, so
recording the variable verbatim produced a tag docker cannot inspect
("No such image: r0.1.91.1:latest"), leaving the digest unresolved on exactly
the path an operator uses to pin a builder. The repository prefix now sits
outside the choice, and both paths were run to confirm they agree.
A whitespace-only ARG produced the tag risczero/risc0-guest-builder:r0. as
though it named an image. build.rs asserts the trimmed value is non-empty
(build.rs:71-77), so the manifest now trims before the check.
Three comments here described the script as running in the release job and
failing the release. It never failed anything itself: the incomplete path exits
zero. Reworded to describe what the script does.
Refs theinterfold#1811
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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📝 WalkthroughWalkthroughThe provenance manifest generator now derives the builder image tag from ChangesBuilder image resolution
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: 🟡 Moderate · up to When the guest toolchain is missing but an override is set, the manifest can record a builder image as resolved even though the corresponding build configuration is rejected, producing misleading provenance. Merge should wait for the toolchain validation fix or explicit owner acceptance. Suggested reviewers: 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches 💡 1🛠️ Fix failing CI checks 💡
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Actionable comments posted: 1
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Inline comments:
In `@scripts/generate-provenance-manifest.ts`:
- Around line 132-135: Update the tag-resolution logic around toolchain and
RISC0_DOCKER_CONTAINER_TAG so a null or whitespace-only guestToolchain returns {
tag: null, digest: null } before any override is applied; retain override
handling only for a valid toolchain. Add a regression test covering a missing
toolchain with the override set.
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scripts/generate-provenance-manifest.ts
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The override was applied before the toolchain check, so a tree with no `ARG RISC0_TOOLCHAIN` and `RISC0_DOCKER_CONTAINER_TAG` set recorded a builder. Nothing could have used it: `guest_builder_tag` panics on a missing ARG and asserts on an empty one, and it runs only inside `if use_docker()`, so such a tree either failed the Docker build before risc0-build read the variable or built locally and pulled no image. Check the toolchain first and leave the field unresolved instead. The previous comment reached the opposite conclusion from the same premise. Behaviour, run: toolchain "1.91.1" gives r0.1.91.1; with an override it gives the override; null, "" and " " each give null whether or not the override is set. A regression test was suggested; scripts/ has no test harness and `pnpm test` covers evm, rust, sdk and noir only, so adding one is a larger change than this fix. Refs theinterfold#1811
2 participants
Problem
The provenance manifest records which builder image produced the guest. It named one the build
never pulls.
risc0-buildresolves the builder tag in three steps(
risc0-build-3.0.3/src/config.rs:59-70):RISC0_DOCKER_CONTAINER_TAG, then whatever the callerset on
DockerOptions, then its own compiled-inDEFAULT_DOCKER_TAG.crates/support/methods/build.rs:90-95always sets the second, deriving it fromARG RISC0_TOOLCHAINincrates/support/Dockerfile. The third is therefore unreachable from thisrepository — and the third is what the script read, by scanning
~/.cargo/registry/src/*/risc0-build-3.0.3/src/lib.rsfor the constant.Same machine, same commit, same source. Only the script differs:
"risc0GuestToolchain": "1.91.1", "builderImage": { - "tag": "risczero/risc0-guest-builder:r0.1.88.0", - "digest": null + "tag": "risczero/risc0-guest-builder:r0.1.91.1", + "digest": "risczero/risc0-guest-builder@sha256:fafb377a44e1cfca415577c48d2f7012bda99ed36f2fae27f9a663b9fe6048f0" }, "unresolved": [ "guest.elfSha256", - "build.builderImage.digest", "deployment (pass --rpc and --verifier)" ]digestwasnullbecausedocker image inspectcannot find an image that was never pulled. Sobuild.builderImage.digestcould not resolve on any machine, andcomplete: true— whatdocs/pages/verifying-the-compute-provider.mdxasks a release manifest to reach — was structurallyout of reach. The two remaining entries are conditional rather than broken:
guest.elfSha256needsa machine that built the guest, and
deploymentneeds--rpcand--verifier.Change
Derive the tag from
ARG RISC0_TOOLCHAIN, the same sourcebuild.rsuses, and drop the registryscan. Two adjacent defects in the same lines went with it, both present before this change:
RISC0_DOCKER_CONTAINER_TAGis a bare tag, not an image reference.docker.rs:145-149formats
risczero/risc0-guest-builder:<tag>from it. Recording the variable verbatim produced areference docker rejects (
No such image: r0.1.91.1:latest), leaving the digest unresolved onexactly the path an operator uses to pin a builder. The repository prefix now sits outside the
choice.
risczero/risc0-guest-builder:r0.as though it named animage.
build.rs:71-77asserts the trimmed value is non-empty, so the manifest now trims beforethe check and reports the field unresolved instead.
Verification
Ran the reproducible build,
RISC0_USE_DOCKER=1 cargo buildincrates/support/methods:That is the tag and the digest the manifest now records.
Both tag paths were run and agree:
risczero/risc0-guest-builder:r0.1.91.1RISC0_DOCKER_CONTAINER_TAG=r0.1.91.1risczero/risc0-guest-builder:r0.1.91.1The four toolchain inputs behave as intended:
"1.91.1"gives the tag, and""," "andnulleach give a null tag rather than a partial one.tsc --noEmit,eslintandprettier --checkpass on the file.Refs #1811
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