ABI: make Idris2 proofs genuinely compile + add machine-checked theorems#38
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The governance/licence-consistency check requires an SPDX-License-Identifier header on the LICENSE file and a `license` field in the manifest. The LICENSE body is MPL-2.0 text, so stamp `SPDX-License-Identifier: MPL-2.0` (matching the actual body) and set `license = "MPL-2.0"` (replacing `license-file`). Verified with standards/scripts/check-licence-consistency.sh (passes). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01DF9CcCuL4YJoqs26eHsYiA
Make the repo's licensing single and consistent, matching the wokelangiser reference policy and the merged iseriser pattern: - Remove contradictory PMPL-1.0-or-later / Palimpsest self-claims from README badges/footers, QUICKSTART, RSR_OUTLINE, STATE-VISUALIZER, and machine-readable governance (META, stapeln, deny.toml allow-list, copilot/AGENTIC SPDX directives, Trust/Must LICENSE-content checks, per-project CLAUDE.md). - Encode the docs split in REUSE dep5: *.adoc/*.md/docs/** -> CC-BY-SA-4.0, everything else -> MPL-2.0. - READMEs show MPL-2.0 (code) + CC-BY-SA-4.0 (docs) badges; full texts live in LICENSES/; root LICENSE stays MPL-2.0 for GitHub's licence chip. Preserves legitimate non-self references: cargo-deny's AGPL deny-list, the "never use AGPL" estate policy, and the Contributor Covenant CoC. Verified: standards/scripts/check-licence-consistency.sh passes; no residual PMPL/Palimpsest self-claims remain. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01DF9CcCuL4YJoqs26eHsYiA
The src/interface/abi ABI was scaffolded from a template and never
compiler-checked. This makes all of it typecheck cleanly under Idris2
0.7.0 (zero errors, zero warnings) with genuine, machine-checked proofs.
Types.idr:
- Replace the %runElab thisPlatform stub (needs ElabReflection) with a
plain value (Linux).
- DecEq Result: replace the non-compiling `decEq _ _ = No absurd`
catch-all with explicit off-diagonal disequality cases for all 30
ordered distinct constructor pairs (\case Refl impossible).
- createHandle: solve the {auto 0 nonNull : So (ptr /= 0)} obligation via
Data.So.choose instead of leaving it unsolved.
Layout.idr:
- paddingFor: use Data.Nat.minus instead of Nat subtraction (no Neg).
- Add sound decDivides decision procedure (div + decEq) producing real
Divides witnesses; replace the unsound `alignUpCorrect ... = DivideBy
... Refl` with alignUpDivides built on decDivides.
- checkCABI: implement decFieldsAligned over the Vect of fields and build
a genuine FieldsAligned witness; drop the ?fieldsAlignedProof hole.
- offsetInBounds: change the unsound universally-quantified So return type
to Maybe (So ...) decided via choose.
- Add three concrete C-ABI struct layouts (proofEngineContext,
proofObligation, handleData) with explicit erased proofs
{sizeCorrect = Oh} and {aligned = DivideBy k Refl}; add verifyAllLayouts.
Proofs.idr (new): machine-checked theorems —
- proofEngineContextCompliant / proofObligationCompliant /
handleDataCompliant: CABICompliant witnesses built directly from
per-field DivideBy k Refl proofs (multiplication reduces at typecheck).
- okIsZero, proofFailureIsFive: pin the FFI result-code encoding.
- okNotNullPointer: distinct codes encode distinctly.
Build packaging:
- git mv flat files to src/interface/abi/Idrisiser/ABI/{Types,Layout,
Foreign}.idr to match module namespaces.
- Add src/interface/abi/idrisiser-abi.ipkg.
- .gitignore: add **/build/, *.ttc, *.ttm.
No believe_me / assert_total / idris_crash / postulate / %hint / holes.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DF9CcCuL4YJoqs26eHsYiA
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Idris2 ABI proofs — genuinely compile + machine-checked theorems
Part of the family-wide ABI-proofs review. The hand-written ABI did not typecheck under Idris2 0.7.0; this makes it real and verified, following the merged iseriser reference. (Note: idrisiser targets Idris2 itself — its ABI proofs now self-consistently compile.)
Systemic fixes:
decEq _ _ = No absurd→ explicit off-diagonal cases;{auto 0 nonNull}smart constructors →choose-based;paddingFor-→minus; realdecDivides/decFieldsAlignedreplacing?fieldsAlignedProof; honestoffsetInBounds;thisPlatformde-%runElab'd; buildable nested layout + ipkg; newProofs.idrwith real theorems.Verified:
idris2 --buildclean (0/0); adversarial re-verify found nobelieve_me/postulate/holes.🤖 Generated with Claude Code
Generated by Claude Code