test(mmle): require Rust ownership for marginal production fit - #823
test(mmle): require Rust ownership for marginal production fit#823seonghobae wants to merge 12 commits into
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📝 WalkthroughWalkthroughThe marginal MMLE path now validates Rust capability version and entrypoint availability before dispatch. When Rust support is unavailable or incompatible, ChangesMarginal MMLE capability enforcement
Estimated code review effort: 3 (Moderate) | ~25 minutes Merge Risk: 🟡 Moderate · up to Production marginal MMLE can currently reach an incompatible compiled implementation and fail with an unstable low-level error instead of the required fail-closed RuntimeError. The PR should not merge until versioned capability validation is implemented and the exact-head regression and required checks are green. Possibly related PRs
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Inline comments:
In `@python/fast_mlsirm/fit.py`:
- Around line 353-357: Update the Rust backend validation in the marginal MMLE
dispatch path to require a versioned marginal capability, not merely a non-null
fit_marginal callable. Expose and check the Rust extension’s current marginal
capability/version before invoking it, and raise the established backend
RuntimeError for incompatible or stale extensions instead of allowing a raw
TypeError from the keyword signature.
In `@tests/test_marginal_mmle_rust_ownership.py`:
- Line 57: Update the match pattern in the pytest.raises call to use a raw regex
literal, preserving the existing RuntimeError message pattern while satisfying
Ruff RUF043.
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Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
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python/fast_mlsirm/fit.pytests/test_marginal_mmle_rust_ownership.py
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Pull request overview
OpenCode cannot approve yet because required coverage evidence did not pass.
Review outcome
1. HIGH .github/workflows/opencode-review.yml:1 - Coverage evidence did not prove required test/docstring evidence
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Problem: The required coverage-evidence job result was
failure, so OpenCode cannot establish approval sufficiency for this head. -
Root cause: Automated approval is only valid when the same-head coverage-evidence job proves supported repository test suites passed and configured docstring gates passed or were advisory, or reports not applicable because no supported source files or package manifests exist. Missing, failed, skipped, unavailable, or unsupported-tooling test evidence is a blocker.
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Fix: Install or configure the repository test/docstring evidence tooling when source files or package manifests exist, rerun the current-head coverage-evidence job, and approve only after it reports
successwith required evidence or explicit no-source not-applicable evidence. -
Regression test: Keep the approval branch checking
needs.coverage-evidence.result == successbefore posting APPROVE, and publish REQUEST_CHANGES when coverage-evidence blocker states such as cancelled, skipped, failed, unsupported-tooling, or below-100 evidence are present. -
Result: REQUEST_CHANGES
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Reason: coverage-evidence result was
failure, so required test/docstring evidence was not proven for current headbca934ac035a9f7a8466c493e7d26e0753bdb1b0. -
Head SHA:
bca934ac035a9f7a8466c493e7d26e0753bdb1b0 -
Workflow run: 31826771087
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Workflow attempt: 1
Coverage evidence
Coverage evidence job did not run or did not publish coverage evidence.
Changed-File Evidence Map
flowchart LR
PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
Evidence --> S1["Changed file (2 files)"]
S1 --> I1["repository behavior"]
I1 --> R1["Review risk: Changed file (2 files)"]
R1 --> V1["required checks"]
Evidence --> S2["Test (2 files)"]
S2 --> I2["regression suite"]
I2 --> R2["Review risk: Test (2 files)"]
R2 --> V2["targeted test run"]
OpenCode Review Overview
Pull request overviewOpenCode cannot approve yet because required coverage evidence did not pass. Review outcome1. HIGH .github/workflows/opencode-review.yml:1 - Coverage evidence did not prove required test/docstring evidence
Coverage evidenceCoverage evidence job did not run or did not publish coverage evidence. Changed-File Evidence Mapflowchart LR
PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
Evidence --> S1["Changed file (2 files)"]
S1 --> I1["repository behavior"]
I1 --> R1["Review risk: Changed file (2 files)"]
R1 --> V1["required checks"]
Evidence --> S2["Test (2 files)"]
S2 --> I2["regression suite"]
I2 --> R2["Review risk: Test (2 files)"]
R2 --> V2["targeted test run"]
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@opencode-agent Please re-review exact unchanged head |
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Review of #823 at 59332c93
The fail-closed Rust ownership contract is real for backend="rust" and for auto once it resolves to rust. Prior CodeRabbit items are addressed: exact integer MARGINAL_CAPABILITY_VERSION == 1 is required before fit_marginal is read or called, and the ownership test uses a raw regex.
No merge-blocking source defect on this head. Do not merge #823 as-is.
Residual that still fails the claimed contract
After a version-1 capability pass, only ValueError is wrapped. A callable that rejects the current keyword contract still leaks TypeError (fit.py rust dispatch). That is the stale-ABI hole this PR set out to close.
The successor on cursor/bc-fdce5e1e-163c-4424-9d96-e5213933ebe1-8551 wraps that TypeError as the package-owned ABI RuntimeError, adds the public fit(..., estimator="mmle", model="MLS2PLM") regression, and stops the missing-entrypoint test from depending on a compiled extension.
Next action
Land the successor after its exact-head required checks and a non-author approval. Close #823 as superseded. Do not treat the earlier OpenCode coverage-evidence uv-download failure as a source defect on this slice.
Sent by Cursor Automation: Fix Issues
| "compiled Rust core marginal ABI capability is missing or unsupported" | ||
| ) | ||
| rust = getattr(_core, "fit_marginal", None) | ||
| if not callable(rust): |
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After this callable check, rust(...) still wraps only ValueError. A version-1 entrypoint that rejects the current keywords (pop_kind, anchors, covariates) leaks TypeError instead of the package-owned ABI RuntimeError.
Wrap TypeError with the existing capability message and from exc. The successor branch does that and adds a public fit(..., estimator="mmle") regression that injects a version-1 callable raising keyword TypeError.
1 participant
Scope
Make production marginal MMLE fail closed on a compatible compiled Rust implementation without restoring NumPy production arithmetic.
Test-first lineage and root cause
The branch adds ownership regressions proving that
fit(..., estimator="mmle", backend="rust")cannot fall back to NumPy when the compiled marginal estimator is unavailable. CodeRabbit then identified a real ABI gap: a stale native module could expose callablefit_marginalbut reject the current keyword contract only after dispatch.The focused fixture models that stale binding with
MARGINAL_CAPABILITY_VERSION=0. The required behavior is a package-ownedRuntimeErrorbefore result-affecting native execution, never a leaked signatureTypeErrorand never Python numerical fallback.Implemented GREEN
MARGINAL_CAPABILITY_VERSION = 1.fit_marginal.RuntimeErrorwith causal chaining where applicable.Boundaries
No Python/NumPy production estimator fallback, after-dispatch compatibility inference, formula redesign, gate weakening, force update or destructive rebase. This bounded ABI contract does not close the broader marginal/MMLE architecture backlog.
Exact current state
fb67ced09d8ee00542c05d56374537a9a7239751.bca934ac035a9f7a8466c493e7d26e0753bdb1b0.COMMENTED, not approval.CHANGES_REQUESTED. Central run31826771087reported that required coverage evidence did not materialize. The separately successful exact-head check contexts do not supersede that formal review. The blocker is central evidence/control-plane behavior rather than proof of a marginal source defect, but it remains effective and is not dismissed.No gate, review or approval is weakened or bypassed. Any future source-head movement requires a fresh exact-head sweep.
Advances the Rust-first marginal/MMLE ownership contract.