saymrwulf/proof-aware-crypto-tooling-agent
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add verifier bootstrap and attestation lane

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saymrwulf 2026-07-03 11:24:13 +02:00
parent be5bd182d0
commit 2282bb43c7
16 changed files with 594 additions and 28 deletions
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2
AGENTS.md
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@ -12,3 +12,5 @@ Guidance for future Codex runs in this repository:
- Do not hide proof failures behind warnings.
- Keep claim cards machine-readable and reports explicit about proven claims, preconditions, exclusions, trusted base, and residual risk.
- Consequence-producing commands must be policy gated. Do not build wallet or trading-agent artifacts from `R3` arithmetic evidence.
- Distinguish verifier capability failures from proof failures. Missing `Mathlib`, missing `Aeneas`, or a missing pinned env script means local replay is unavailable; do not treat it as a clean proof.
- Third-party proof-checking attestations are allowed only as an explicit trust transformation. They must identify the provider, subject repo/commit, theorem names, observed axioms, and signature status. Untrusted attestations must not authorize builds.

42
README.md
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@ -33,6 +33,7 @@ PyYAML is optional. Without it, `pacta` can still read the included simple YAML
```bash
python -m pacta --help
pacta scan --config examples/repos.yaml
pacta doctor --config examples/repos.yaml --repo-name dalek-ed25519-verified
pacta claims --config examples/repos.yaml --repo-name dalek-ed25519-verified --offline-fixture --out claims.yaml
pacta audit --repo ./repos/dalek-ed25519-verified
pacta lean-check --repo ./repos/dalek-ed25519-verified
@ -41,6 +42,7 @@ pacta score --claims claims.yaml
pacta agent --config examples/repos.yaml --repo-name dalek-ed25519-verified --offline-fixture --action build-library
pacta agent --config examples/repos.yaml --repo-name dalek-ed25519-verified --clone --run-axioms --action build-library --artifact-dir artifacts-live
pacta agent --claims claims.yaml --action build-wallet-demo
pacta agent --config examples/repos.yaml --repo-name dalek-ed25519-verified --attestation examples/dalek-ed25519.attestation.yaml --trust-attestation-provider example-proof-checker.invalid --action build-library
```
## Consequence Engine
@ -54,6 +56,46 @@ This is intentional. Arithmetic proof evidence can authorize a constrained lower
In live mode, `--clone --run-axioms` downloads the configured repository, replays the local Lean checks, runs the axiom audit, writes `claims.yaml` and `report.md`, and only builds the capsule if the resulting score satisfies the policy threshold. Failed replay is a hard consequence: no artifact is built.
## Verifier Bootstrap
Some verified repositories rely on a pinned Aeneas Lean project, usually exposed by an environment script such as `~/aeneas-toolchain/env.sh`. `pacta` can use that environment without running extraction:
```bash
pacta doctor --config examples/repos.yaml --repo-name dalek-ed25519-verified
pacta agent --config examples/repos.yaml --repo-name dalek-ed25519-verified --clone --run-axioms --action build-library
```
The configured defaults are:
- `env_script: ~/aeneas-toolchain/env.sh`
- `lean_project_dir: $AENEAS_HOME/backends/lean`
If those are missing, the result is `R0` for local replay because this machine lacks verifier capability. That is different from saying the theorem is false. It means the agent cannot trust the repository from local machine-checked evidence yet.
## Third-Party Attestation
For agents that should not build the full Lean/Aeneas environment locally, `pacta` also supports an attestation lane. A specialized proof-checking service can replay the proofs in its own controlled environment and publish a certificate describing:
- repository URL and commit,
- theorem/certificate names,
- observed axioms,
- Lean/toolchain environment,
- service identity and signature metadata.
The agent can consume that certificate only when the provider is explicitly trusted:
```bash
pacta agent --config examples/repos.yaml \
--repo-name dalek-ed25519-verified \
--attestation examples/dalek-ed25519.attestation.yaml \
--trust-attestation-provider example-proof-checker.invalid \
--action build-library
```
This changes the trusted base. The agent is no longer trusting local Lean replay; it is trusting the proof-checking service, its environment, signing key custody, and log retention. Without an explicitly trusted provider, attestation evidence scores `R0`.
The included `examples/dalek-ed25519.attestation.yaml` is a schema/demo fixture. A production service should publish verifiable signatures, transparency-log entries, and reproducible logs; the prototype records signature metadata but does not yet implement cryptographic signature verification.
## Truth Boundary
The Ed25519 repositories should not be marketed as fully verified wallets or fully verified Ed25519 end-to-end. The strongest current claim is lower-layer and theorem-bound:

40
examples/dalek-ed25519.attestation.yaml Normal file
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@ -0,0 +1,40 @@
schema_version: 1
provider: example-proof-checker.invalid
issued_at: "2026-07-03T00:00:00Z"
subject:
component: dalek-ed25519-verified
repo_url: https://github.com/saymrwulf/dalek-ed25519-verified.git
repo_commit: example-attested-commit
verification_dir: verification
kind: ed25519
verified_backend: serial/u64
environment:
lean_version: Lean v4.30.0-rc2
lake_version: pinned provider environment
certificates:
- name: CurveFieldProofs.fieldImplementation
status: proven
axiom_status: clean
observed_axioms:
- propext
- Classical.choice
- Quot.sound
expected_axioms:
- propext
- Classical.choice
- Quot.sound
- name: CurveFieldProofs.edwardsImplementation
status: proven
axiom_status: clean
observed_axioms:
- propext
- Classical.choice
- Quot.sound
expected_axioms:
- propext
- Classical.choice
- Quot.sound
signature:
status: not_implemented
identity: example schema only; replace with Sigstore/minisign/service signature
log_url: https://example.invalid/proof-checks/dalek-ed25519

10
examples/repos.yaml
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@ -4,6 +4,8 @@ repos:
kind: ed25519
verification_dir: verification
verified_backend: serial/u64
env_script: ~/aeneas-toolchain/env.sh
lean_project_dir: $AENEAS_HOME/backends/lean
certificates:
- CurveFieldProofs.fieldImplementation
- CurveFieldProofs.edwardsImplementation
@ -25,6 +27,8 @@ repos:
kind: ed25519
verification_dir: verification
verified_backend: serial/u64
env_script: ~/aeneas-toolchain/env.sh
lean_project_dir: $AENEAS_HOME/backends/lean
certificates:
- CurveFieldProofs.fieldImplementation
- CurveFieldProofs.edwardsImplementation
@ -43,6 +47,8 @@ repos:
kind: ed25519
verification_dir: verification
verified_backend: serial/u64
env_script: ~/aeneas-toolchain/env.sh
lean_project_dir: $AENEAS_HOME/backends/lean
backend_warning: pure Rust path only; do not treat zkVM accelerator/syscall path as verified
certificates:
- CurveFieldProofs.fieldImplementation
@ -53,6 +59,8 @@ repos:
kind: ed25519
verification_dir: verification
verified_backend: serial/u64
env_script: ~/aeneas-toolchain/env.sh
lean_project_dir: $AENEAS_HOME/backends/lean
backend_warning: pure Rust path only; do not treat Engine25519/hardware accelerator as verified
certificates:
- CurveFieldProofs.fieldImplementation
@ -62,6 +70,8 @@ repos:
url: https://github.com/saymrwulf/pasta-pallas-verified.git
kind: pasta_pallas
verification_dir: verification
env_script: ~/aeneas-toolchain/env.sh
lean_project_dir: $AENEAS_HOME/backends/lean
known_status: foundation only unless aggregate field certificate is present
known_exclusions:
- full fieldImplementation certificate unless present and axiom-clean

5
src/pacta/artifact.py
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@ -159,6 +159,9 @@ def _lib_rs(card: dict[str, Any]) -> str:
repo_url = _rust_string(str(card.get("repo_url") or ""))
risk = card.get("risk") or {}
risk_level = _rust_string(str(risk.get("level") or "R0"))
evidence = card.get("evidence") or {}
evidence_mode = _rust_string(str(evidence.get("evidence_mode") or "local_or_fixture"))
attestation_provider = _rust_string(str(evidence.get("attestation_provider") or ""))
kind = _rust_string(str(card.get("kind") or "unknown"))
backend = _rust_string(str(card.get("verified_backend") or ""))
constraints = [_rust_string(str(item)) for item in risk.get("deployment_constraints") or []]
@ -174,6 +177,8 @@ pub const REPO_URL: &str = "{repo_url}";
pub const KIND: &str = "{kind}";
pub const VERIFIED_BACKEND: &str = "{backend}";
pub const RISK_LEVEL: &str = "{risk_level}";
pub const EVIDENCE_MODE: &str = "{evidence_mode}";
pub const ATTESTATION_PROVIDER: &str = "{attestation_provider}";
pub const CLAIM_CARD_JSON: &str = include_str!("../claims.json");
pub const DEPLOYMENT_CONSTRAINTS: &[&str] = &[

100
src/pacta/attestation.py Normal file
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@ -0,0 +1,100 @@
from __future__ import annotations
from dataclasses import dataclass, field
from pathlib import Path
from typing import Any
from .config import RepoConfig
from .yamlio import load_data
@dataclass(slots=True)
class AttestationResult:
accepted: bool
provider: str | None
diagnostics: list[str] = field(default_factory=list)
certificates: list[dict[str, Any]] = field(default_factory=list)
evidence: dict[str, Any] = field(default_factory=dict)
trusted_base: list[str] = field(default_factory=list)
repo_commit: str | None = None
def load_attestation(path: str | Path) -> dict[str, Any]:
raw = load_data(path)
if not isinstance(raw, dict):
raise ValueError(f"Attestation must be a mapping: {path}")
return raw
def validate_attestation(
raw: dict[str, Any],
repo: RepoConfig,
path: str | Path | None = None,
trusted_provider: str | None = None,
) -> AttestationResult:
provider = raw.get("provider")
subject = raw.get("subject") or {}
diagnostics: list[str] = []
if not provider:
diagnostics.append("Attestation is missing provider.")
if trusted_provider is None:
diagnostics.append("No trusted attestation provider was explicitly configured.")
elif provider != trusted_provider:
diagnostics.append(f"Attestation provider '{provider}' does not match trusted provider '{trusted_provider}'.")
if subject.get("component") and subject.get("component") != repo.name:
diagnostics.append(f"Attestation subject component '{subject.get('component')}' does not match repo '{repo.name}'.")
if repo.url and subject.get("repo_url") and subject.get("repo_url") != repo.url:
diagnostics.append("Attestation subject repo_url does not match config.")
if subject.get("verification_dir") and subject.get("verification_dir") != repo.verification_dir:
diagnostics.append("Attestation subject verification_dir does not match config.")
certs = raw.get("certificates") or []
if not isinstance(certs, list) or not certs:
diagnostics.append("Attestation contains no certificate results.")
certs = []
expected_names = set(repo.certificates)
observed_names = {str(cert.get("name")) for cert in certs if isinstance(cert, dict)}
missing = sorted(expected_names - observed_names)
if missing:
diagnostics.append("Attestation is missing configured certificate(s): " + ", ".join(missing))
signature = raw.get("signature") or {}
environment = raw.get("environment") or {}
signature_status = signature.get("status", "not_checked")
if signature_status not in {"verified", "not_implemented"}:
diagnostics.append(f"Attestation signature status is not acceptable for this prototype: {signature_status}")
accepted = not diagnostics
evidence = {
"evidence_mode": "third_party_attestation",
"attestation_provider": provider,
"attestation_path": str(path) if path else None,
"attestation_signature_status": signature_status,
"attestation_log_url": raw.get("log_url") or signature.get("log_url"),
"attestation_issued_at": raw.get("issued_at"),
"lean_version": environment.get("lean_version"),
"lake_version": environment.get("lake_version"),
}
trusted_base = []
if accepted:
trusted_base.append(f"Third-party proof-checking attestation provider: {provider}.")
trusted_base.append("Provider environment, replay implementation, signing key custody, and log retention.")
return AttestationResult(
accepted=accepted,
provider=str(provider) if provider else None,
diagnostics=diagnostics,
certificates=[_normalize_certificate(cert, repo.expected_axioms) for cert in certs if isinstance(cert, dict)],
evidence=evidence,
trusted_base=trusted_base,
repo_commit=subject.get("repo_commit"),
)
def _normalize_certificate(cert: dict[str, Any], expected_axioms: list[str]) -> dict[str, Any]:
return {
"name": str(cert.get("name") or ""),
"status": str(cert.get("status") or "unknown"),
"axiom_status": str(cert.get("axiom_status") or "not_checked"),
"observed_axioms": list(cert.get("observed_axioms") or []),
"expected_axioms": list(cert.get("expected_axioms") or expected_axioms),
}

48
src/pacta/claims.py
View file

@ -4,6 +4,7 @@ from dataclasses import dataclass, field
from pathlib import Path
from typing import Any
from .attestation import AttestationResult
from .config import RepoConfig
from .lean import AxiomAuditResult, CertificateAxiomResult, LeanCheckResult, detect_tools
from .manifest import VerificationLayout
@ -36,18 +37,19 @@ def build_claim_card(
layout: VerificationLayout | None = None,
lean_check: LeanCheckResult | None = None,
axiom_audit: AxiomAuditResult | None = None,
attestation: AttestationResult | None = None,
offline_fixture: bool = False,
) -> dict[str, Any]:
path = Path(local_path)
profile = get_profile(repo.kind, repo)
tools = detect_tools()
certs = _certificate_claims(repo, axiom_audit, offline_fixture)
certs = _certificate_claims(repo, axiom_audit, offline_fixture, attestation)
scanned_files = layout.relative_files() if layout else []
card: dict[str, Any] = {
"component": repo.name,
"repo_url": repo.url,
"local_path": str(path),
"repo_commit": None if offline_fixture else git_commit(path),
"repo_commit": attestation.repo_commit if attestation and attestation.repo_commit else (None if offline_fixture else git_commit(path)),
"verification_dir": repo.verification_dir,
"kind": repo.kind,
"verified_backend": repo.verified_backend,
@ -55,13 +57,15 @@ def build_claim_card(
"guarantees": profile.guarantees,
"preconditions": profile.preconditions,
"exclusions": profile.exclusions,
"trusted_base": profile.trusted_base,
"trusted_base": [*profile.trusted_base, *(attestation.trusted_base if attestation and attestation.accepted else [])],
"evidence": {
"lean_version": tools.lean_version,
"lake_version": tools.lake_version,
"check_log_path": lean_check.log_path if lean_check else None,
"axiom_log_path": axiom_audit.log_path if axiom_audit else None,
"replay_blockers": _replay_blockers(lean_check, axiom_audit, attestation),
"scanned_files": scanned_files,
**(attestation.evidence if attestation else {"evidence_mode": "local_or_fixture"}),
},
"risk": {
"level": "R0",
@ -86,9 +90,22 @@ def _certificate_claims(
repo: RepoConfig,
axiom_audit: AxiomAuditResult | None,
offline_fixture: bool,
attestation: AttestationResult | None,
) -> list[CertificateClaim]:
profile = get_profile(repo.kind, repo)
names = repo.certificates or profile.default_certificates
if attestation and attestation.accepted:
by_name = {cert["name"]: cert for cert in attestation.certificates}
return [
CertificateClaim(
name=name,
status=str(by_name.get(name, {}).get("status", "missing")),
axiom_status=str(by_name.get(name, {}).get("axiom_status", "not_checked")),
observed_axioms=list(by_name.get(name, {}).get("observed_axioms") or []),
expected_axioms=list(by_name.get(name, {}).get("expected_axioms") or profile.expected_axioms),
)
for name in names
]
if axiom_audit:
by_name = {cert.name: cert for cert in axiom_audit.certificates}
return [_from_axiom_result(name, by_name.get(name), profile.expected_axioms) for name in names]
@ -132,3 +149,28 @@ def _has_axiom_clean_certificate(card: dict[str, Any]) -> bool:
cert.get("status") == "proven" and cert.get("axiom_status") == "clean"
for cert in card.get("certificates") or []
)
def _replay_blockers(
lean_check: LeanCheckResult | None,
axiom_audit: AxiomAuditResult | None,
attestation: AttestationResult | None,
) -> list[str]:
blockers: list[str] = []
if attestation and not attestation.accepted:
blockers.extend(attestation.diagnostics)
if lean_check:
blockers.extend(lean_check.diagnostics)
if lean_check.missing_tool:
blockers.append(f"Missing verifier capability: {lean_check.missing_tool}")
if axiom_audit:
blockers.extend(axiom_audit.diagnostics)
if axiom_audit.missing_tool:
blockers.append(f"Missing verifier capability: {axiom_audit.missing_tool}")
seen: set[str] = set()
out: list[str] = []
for blocker in blockers:
if blocker and blocker not in seen:
seen.add(blocker)
out.append(blocker)
return out

123
src/pacta/cli.py
View file

@ -6,10 +6,19 @@ from pathlib import Path
from typing import Any
from .agent import component_artifact_dir, run_agent_action, write_decision
from .attestation import load_attestation, validate_attestation
from .audit import scan_hygiene
from .claims import build_claim_card
from .config import RepoConfig, load_config
from .lean import LeanCheckResult, lean_check_files, run_axiom_audit
from .lean import (
LeanCheckResult,
build_lean_env,
detect_tools,
env_script_available,
lean_check_files,
resolve_lean_project_dir,
run_axiom_audit,
)
from .manifest import discover_layout
from .profiles import get_profile
from .repo import clone_or_fetch, status_for
@ -39,6 +48,13 @@ def build_parser() -> argparse.ArgumentParser:
scan.add_argument("--fetch", action="store_true", help="Fetch existing repositories when cloning/scanning.")
scan.set_defaults(func=cmd_scan)
doctor = sub.add_parser("doctor", help="Diagnose local verifier capabilities for a configured repository.")
doctor.add_argument("--config", required=True)
doctor.add_argument("--repo-name", required=True)
doctor.add_argument("--env-script")
doctor.add_argument("--lean-project-dir")
doctor.set_defaults(func=cmd_doctor)
audit = sub.add_parser("audit", help="Run static proof hygiene checks.")
audit.add_argument("--repo", required=True)
audit.add_argument("--verification-dir", default="verification")
@ -51,6 +67,8 @@ def build_parser() -> argparse.ArgumentParser:
lean_check.add_argument("--verification-dir", default="verification")
lean_check.add_argument("--timeout", type=int, default=120)
lean_check.add_argument("--log-dir", default=".pacta")
lean_check.add_argument("--env-script")
lean_check.add_argument("--lean-project-dir")
lean_check.set_defaults(func=cmd_lean_check)
check = sub.add_parser("check", help="Alias for lean-check.")
@ -58,6 +76,8 @@ def build_parser() -> argparse.ArgumentParser:
check.add_argument("--verification-dir", default="verification")
check.add_argument("--timeout", type=int, default=120)
check.add_argument("--log-dir", default=".pacta")
check.add_argument("--env-script")
check.add_argument("--lean-project-dir")
check.set_defaults(func=cmd_lean_check)
axiom = sub.add_parser("axioms", help="Run configured Lean axiom audit.")
@ -66,6 +86,8 @@ def build_parser() -> argparse.ArgumentParser:
axiom.add_argument("--repo-name", required=True)
axiom.add_argument("--timeout", type=int, default=120)
axiom.add_argument("--log-dir", default=".pacta")
axiom.add_argument("--env-script")
axiom.add_argument("--lean-project-dir")
axiom.set_defaults(func=cmd_axioms)
claims = sub.add_parser("claims", help="Generate a machine-readable claim card.")
@ -78,6 +100,10 @@ def build_parser() -> argparse.ArgumentParser:
claims.add_argument("--run-axioms", action="store_true")
claims.add_argument("--timeout", type=int, default=120)
claims.add_argument("--log-dir", default=".pacta")
claims.add_argument("--env-script")
claims.add_argument("--lean-project-dir")
claims.add_argument("--attestation")
claims.add_argument("--trust-attestation-provider")
claims.set_defaults(func=cmd_claims)
report = sub.add_parser("report", help="Generate a human-readable Markdown risk report.")
@ -109,6 +135,10 @@ def build_parser() -> argparse.ArgumentParser:
agent.add_argument("--dry-run", action="store_true")
agent.add_argument("--timeout", type=int, default=120)
agent.add_argument("--log-dir", default=".pacta")
agent.add_argument("--env-script")
agent.add_argument("--lean-project-dir")
agent.add_argument("--attestation")
agent.add_argument("--trust-attestation-provider")
agent.set_defaults(func=cmd_agent)
return parser
@ -126,6 +156,37 @@ def cmd_scan(args: argparse.Namespace) -> int:
return 0
def cmd_doctor(args: argparse.Namespace) -> int:
config = load_config(args.config)
repo = config.repo_named(args.repo_name)
env_script = args.env_script or repo.env_script
lean_project_dir = args.lean_project_dir or repo.lean_project_dir
ok_env, env_error = env_script_available(env_script)
env = build_lean_env(repo.verification_dir, env_script=env_script) if ok_env else {}
tools = detect_tools(env if env else None)
project_dir = resolve_lean_project_dir(lean_project_dir, env if env else None)
print(f"repo: {repo.name}")
print(f"env_script: {env_script or 'not configured'}")
print(f"env_script_status: {'ok' if ok_env else 'missing'}")
if env_error:
print(f"env_script_error: {env_error}")
print(f"lean_project_dir: {lean_project_dir or 'not configured'}")
print(f"lean_project_dir_status: {'ok' if project_dir else 'missing'}")
if project_dir:
print(f"lean_project_dir_resolved: {project_dir}")
print(f"lean: {tools.lean or 'missing'}")
print(f"lake: {tools.lake or 'missing'}")
print(f"lean_version: {tools.lean_version or 'unknown'}")
print(f"lake_version: {tools.lake_version or 'unknown'}")
if not ok_env or not project_dir:
print("remediation: install or point to the pinned verifier environment, for example --env-script ~/aeneas-toolchain/env.sh --lean-project-dir '$AENEAS_HOME/backends/lean'")
return 1
if not tools.lean and not tools.lake:
print("remediation: ensure lean/lake are on PATH after sourcing the verifier environment.")
return 1
return 0
def cmd_audit(args: argparse.Namespace) -> int:
repo_config = _repo_from_optional_config(args.config, args.repo_name, args.verification_dir)
layout = discover_layout(args.repo, repo_config.verification_dir)
@ -144,7 +205,14 @@ def cmd_lean_check(args: argparse.Namespace) -> int:
layout = discover_layout(args.repo, args.verification_dir)
for warning in layout.warnings:
print(f"warning: {warning}")
result = lean_check_files(layout.compile_order, layout.verification_dir, timeout=args.timeout, log_dir=args.log_dir)
result = lean_check_files(
layout.compile_order,
layout.verification_dir,
timeout=args.timeout,
log_dir=args.log_dir,
env_script=args.env_script,
lean_project_dir=args.lean_project_dir,
)
if not result.attempted:
print("; ".join(result.diagnostics))
return 2
@ -159,7 +227,16 @@ def cmd_axioms(args: argparse.Namespace) -> int:
repo = config.repo_named(args.repo_name)
profile = get_profile(repo.kind, repo)
layout = discover_layout(args.repo, repo.verification_dir)
check_result = lean_check_files(layout.compile_order, layout.verification_dir, timeout=args.timeout, log_dir=args.log_dir)
env_script = args.env_script or repo.env_script
lean_project_dir = args.lean_project_dir or repo.lean_project_dir
check_result = lean_check_files(
layout.compile_order,
layout.verification_dir,
timeout=args.timeout,
log_dir=args.log_dir,
env_script=env_script,
lean_project_dir=lean_project_dir,
)
if check_result.log_path:
print(f"check log: {check_result.log_path}")
if not check_result.attempted:
@ -174,6 +251,8 @@ def cmd_axioms(args: argparse.Namespace) -> int:
profile.expected_axioms,
timeout=args.timeout,
log_dir=args.log_dir,
env_script=env_script,
lean_project_dir=lean_project_dir,
)
for cert in result.certificates:
print(f"{cert.name}: {cert.status}, axioms={cert.axiom_status}, observed={cert.observed_axioms}")
@ -197,7 +276,16 @@ def cmd_claims(args: argparse.Namespace) -> int:
if layout is None:
raise ValueError("--run-axioms requires a local repository")
profile = get_profile(repo.kind, repo)
check_result = lean_check_files(layout.compile_order, layout.verification_dir, timeout=args.timeout, log_dir=args.log_dir)
env_script = args.env_script or repo.env_script
lean_project_dir = args.lean_project_dir or repo.lean_project_dir
check_result = lean_check_files(
layout.compile_order,
layout.verification_dir,
timeout=args.timeout,
log_dir=args.log_dir,
env_script=env_script,
lean_project_dir=lean_project_dir,
)
axiom_result = run_axiom_audit(
local_path / repo.verification_dir,
profile.axiom_imports,
@ -205,13 +293,17 @@ def cmd_claims(args: argparse.Namespace) -> int:
profile.expected_axioms,
timeout=args.timeout,
log_dir=args.log_dir,
env_script=env_script,
lean_project_dir=lean_project_dir,
)
attestation = _attestation_for_args(args, repo)
card = build_claim_card(
repo,
local_path,
layout=layout,
lean_check=check_result,
axiom_audit=axiom_result,
attestation=attestation,
offline_fixture=args.offline_fixture,
)
if args.out:
@ -301,7 +393,16 @@ def _card_for_agent(args: argparse.Namespace) -> dict[str, Any]:
if layout is None:
raise ValueError("--run-axioms requires a local repository")
profile = get_profile(repo.kind, repo)
check_result = lean_check_files(layout.compile_order, layout.verification_dir, timeout=args.timeout, log_dir=args.log_dir)
env_script = args.env_script or repo.env_script
lean_project_dir = args.lean_project_dir or repo.lean_project_dir
check_result = lean_check_files(
layout.compile_order,
layout.verification_dir,
timeout=args.timeout,
log_dir=args.log_dir,
env_script=env_script,
lean_project_dir=lean_project_dir,
)
axiom_result = run_axiom_audit(
local_path / repo.verification_dir,
profile.axiom_imports,
@ -309,13 +410,17 @@ def _card_for_agent(args: argparse.Namespace) -> dict[str, Any]:
profile.expected_axioms,
timeout=args.timeout,
log_dir=args.log_dir,
env_script=env_script,
lean_project_dir=lean_project_dir,
)
attestation = _attestation_for_args(args, repo)
return build_claim_card(
repo,
local_path,
layout=layout,
lean_check=check_result,
axiom_audit=axiom_result,
attestation=attestation,
offline_fixture=args.offline_fixture,
)
@ -333,3 +438,11 @@ def print_yaml(data: dict[str, Any]) -> None:
from .yamlio import dumps
print(dumps(data), end="")
def _attestation_for_args(args: argparse.Namespace, repo: RepoConfig):
attestation_path = getattr(args, "attestation", None)
if not attestation_path:
return None
raw = load_attestation(attestation_path)
return validate_attestation(raw, repo, path=attestation_path, trusted_provider=getattr(args, "trust_attestation_provider", None))

4
src/pacta/config.py
View file

@ -23,6 +23,8 @@ class RepoConfig:
expected_axioms: list[str] = field(default_factory=lambda: STANDARD_LEAN_AXIOMS.copy())
known_exclusions: list[str] = field(default_factory=list)
axiom_imports: list[str] = field(default_factory=list)
env_script: str | None = None
lean_project_dir: str | None = None
@classmethod
def from_dict(cls, raw: dict[str, Any]) -> "RepoConfig":
@ -40,6 +42,8 @@ class RepoConfig:
expected_axioms=list(raw.get("expected_axioms") or STANDARD_LEAN_AXIOMS),
known_exclusions=list(raw.get("known_exclusions") or []),
axiom_imports=list(raw.get("axiom_imports") or []),
env_script=raw.get("env_script"),
lean_project_dir=raw.get("lean_project_dir"),
)

140
src/pacta/lean.py
View file

@ -2,6 +2,7 @@ from __future__ import annotations
import os
import re
import shlex
import shutil
import subprocess
import tempfile
@ -50,20 +51,25 @@ class AxiomAuditResult:
diagnostics: list[str] = field(default_factory=list)
def detect_tools() -> LeanTools:
lean = shutil.which("lean")
lake = shutil.which("lake")
def detect_tools(env: dict[str, str] | None = None) -> LeanTools:
path = env.get("PATH") if env else None
lean = shutil.which("lean", path=path)
lake = shutil.which("lake", path=path)
return LeanTools(
lean=lean,
lake=lake,
lean_version=_version([lean, "--version"]) if lean else None,
lake_version=_version([lake, "--version"]) if lake else None,
lean_version=_version([lean, "--version"], env=env) if lean else None,
lake_version=_version([lake, "--version"], env=env) if lake else None,
)
def build_lean_env(verification_dir: str | Path, base_env: dict[str, str] | None = None) -> dict[str, str]:
def build_lean_env(
verification_dir: str | Path,
base_env: dict[str, str] | None = None,
env_script: str | Path | None = None,
) -> dict[str, str]:
verification = Path(verification_dir).resolve()
env = dict(base_env or os.environ)
env = _base_env(base_env, env_script)
candidates = [verification / "gen", verification]
existing = [str(path) for path in candidates if path.exists()]
old = env.get("LEAN_PATH")
@ -74,6 +80,19 @@ def build_lean_env(verification_dir: str | Path, base_env: dict[str, str] | None
return env
def env_script_available(env_script: str | Path | None) -> tuple[bool, str | None]:
if not env_script:
return True, None
path = Path(str(env_script)).expanduser()
if not path.exists():
return False, f"Verifier environment script does not exist: {path}"
return True, None
def resolve_lean_project_dir(path: str | Path | None, env: dict[str, str] | None = None) -> Path | None:
return _resolve_project_dir(path, env or os.environ)
def build_lean_invocation(
file_path: str | Path,
tools: LeanTools,
@ -96,6 +115,8 @@ def lean_check_files(
verification_dir: str | Path,
timeout: int = 120,
log_dir: str | Path | None = None,
env_script: str | Path | None = None,
lean_project_dir: str | Path | None = None,
) -> LeanCheckResult:
if not files:
return LeanCheckResult(
@ -104,7 +125,19 @@ def lean_check_files(
missing_tool=None,
diagnostics=[f"No Lean files discovered under {verification_dir}."],
)
tools = detect_tools()
ok_env, env_error = env_script_available(env_script)
if not ok_env:
return LeanCheckResult(
attempted=False,
ok=False,
missing_tool="env_script",
diagnostics=[
env_error or "Verifier environment script is not available.",
"Install or point --env-script at the pinned Lean/Aeneas environment; no extraction will be run.",
],
)
env = build_lean_env(verification_dir, env_script=env_script)
tools = detect_tools(env)
if not tools.lean and not tools.lake:
return LeanCheckResult(
attempted=False,
@ -112,18 +145,23 @@ def lean_check_files(
missing_tool="lean",
diagnostics=["Neither lean nor lake was found on PATH."],
)
verification = Path(verification_dir)
use_lake_env = tools.lake is not None and ((verification / "lakefile.lean").exists() or (verification / "lakefile.toml").exists())
verification = Path(verification_dir).resolve()
project_dir = _resolve_project_dir(lean_project_dir, env)
use_lake_env = tools.lake is not None and (
project_dir is not None or (verification / "lakefile.lean").exists() or (verification / "lakefile.toml").exists()
)
cwd = project_dir or verification
logs = _log_file(log_dir, "lean-check.log")
checked: list[str] = []
failed: list[str] = []
diagnostics: list[str] = []
env = build_lean_env(verification)
with logs.open("w", encoding="utf-8") as log:
log.write(f"lean: {tools.lean}\n")
log.write(f"lake: {tools.lake}\n")
log.write(f"lean_version: {tools.lean_version}\n")
log.write(f"lake_version: {tools.lake_version}\n\n")
log.write(f"env_script: {env_script or ''}\n")
log.write(f"lean_project_dir: {project_dir or ''}\n\n")
for path in files:
cmd = build_lean_invocation(path, tools, use_lake_env=use_lake_env, output_path=path.with_suffix(".olean"))
log.write("$ " + " ".join(cmd) + "\n")
@ -134,7 +172,7 @@ def lean_check_files(
capture_output=True,
text=True,
timeout=timeout,
cwd=str(verification),
cwd=str(cwd),
env=env,
)
except subprocess.TimeoutExpired:
@ -149,6 +187,7 @@ def lean_check_files(
log.write(f"\nexit_code: {completed.returncode}\n\n")
if completed.returncode != 0:
failed.append(str(path))
diagnostics.extend(_dependency_diagnostics(completed.stdout + completed.stderr))
return LeanCheckResult(
attempted=True,
ok=not failed,
@ -167,21 +206,34 @@ def run_axiom_audit(
expected_axioms: list[str] | None = None,
timeout: int = 120,
log_dir: str | Path | None = None,
env_script: str | Path | None = None,
lean_project_dir: str | Path | None = None,
) -> AxiomAuditResult:
tools = detect_tools()
expected = expected_axioms or STANDARD_LEAN_AXIOMS
ok_env, env_error = env_script_available(env_script)
if not ok_env:
cert_results = [
CertificateAxiomResult(cert, "unknown", "not_checked", [], expected, [env_error or "Verifier environment unavailable."])
for cert in certificates
]
return AxiomAuditResult(False, False, "env_script", cert_results, None, [env_error or "Verifier environment unavailable."])
env = build_lean_env(verification_dir, env_script=env_script)
tools = detect_tools(env)
if not tools.lean and not tools.lake:
cert_results = [
CertificateAxiomResult(cert, "unknown", "not_checked", [], expected, ["Neither lean nor lake was found on PATH."])
for cert in certificates
]
return AxiomAuditResult(False, False, "lean", cert_results, None, ["Neither lean nor lake was found on PATH."])
verification = Path(verification_dir)
use_lake_env = tools.lake is not None and ((verification / "lakefile.lean").exists() or (verification / "lakefile.toml").exists())
verification = Path(verification_dir).resolve()
project_dir = _resolve_project_dir(lean_project_dir, env)
use_lake_env = tools.lake is not None and (
project_dir is not None or (verification / "lakefile.lean").exists() or (verification / "lakefile.toml").exists()
)
cwd = project_dir or verification
logs = _log_file(log_dir, "axiom-audit.log")
imports_text = "\n".join(f"import {module}" for module in imports)
prints_text = "\n".join(f"#print axioms {cert}" for cert in certificates)
env = build_lean_env(verification)
with tempfile.TemporaryDirectory(prefix="pacta-axioms-") as tmp:
audit_file = Path(tmp) / "AxiomAudit.lean"
audit_file.write_text(f"{imports_text}\n\n{prints_text}\n", encoding="utf-8")
@ -193,7 +245,7 @@ def run_axiom_audit(
capture_output=True,
text=True,
timeout=timeout,
cwd=str(verification),
cwd=str(cwd),
env=env,
)
output = completed.stdout + completed.stderr
@ -219,7 +271,7 @@ def run_axiom_audit(
missing_tool=None,
certificates=cert_results,
log_path=str(logs),
diagnostics=[] if return_code == 0 else [f"Lean axiom audit exited with {return_code}."],
diagnostics=[] if return_code == 0 else [f"Lean axiom audit exited with {return_code}.", *_dependency_diagnostics(output)],
)
@ -249,7 +301,7 @@ def _mentions_no_axioms(text: str) -> bool:
return "no axioms" in lowered or "does not depend on any axioms" in lowered
def _version(cmd: list[str | None]) -> str | None:
def _version(cmd: list[str | None], env: dict[str, str] | None = None) -> str | None:
if not cmd[0]:
return None
try:
@ -259,6 +311,7 @@ def _version(cmd: list[str | None]) -> str | None:
capture_output=True,
text=True,
timeout=10,
env=env,
)
except (OSError, subprocess.TimeoutExpired):
return None
@ -271,3 +324,52 @@ def _log_file(log_dir: str | Path | None, name: str) -> Path:
directory = Path(log_dir) if log_dir else Path(".pacta")
directory.mkdir(parents=True, exist_ok=True)
return directory / name
def _base_env(base_env: dict[str, str] | None, env_script: str | Path | None) -> dict[str, str]:
env = dict(base_env or os.environ)
if not env_script:
return env
path = Path(str(env_script)).expanduser()
if not path.exists():
return env
command = f"source {shlex.quote(str(path))}; env"
try:
completed = subprocess.run(
["/bin/zsh", "-lc", command],
check=False,
capture_output=True,
text=True,
timeout=20,
env=env,
)
except (OSError, subprocess.TimeoutExpired):
return env
if completed.returncode != 0:
return env
for line in completed.stdout.splitlines():
if "=" in line:
key, value = line.split("=", 1)
env[key] = value
return env
def _resolve_project_dir(path: str | Path | None, env: dict[str, str]) -> Path | None:
if not path:
return None
expanded = os.path.expandvars(str(path))
for key, value in env.items():
expanded = expanded.replace(f"${key}", value).replace(f"${{{key}}}", value)
resolved = Path(expanded).expanduser()
return resolved if resolved.exists() else None
def _dependency_diagnostics(output: str) -> list[str]:
diagnostics: list[str] = []
modules = sorted(set(re.findall(r"unknown module prefix '([^']+)'", output)))
for module in modules:
diagnostics.append(f"Missing Lean dependency/module prefix: {module}")
missing_objects = sorted(set(re.findall(r"object file '([^']+)' of module ([A-Za-z0-9_'.]+) does not exist", output)))
for _, module in missing_objects[:8]:
diagnostics.append(f"Missing compiled Lean object for module: {module}")
return diagnostics

5
src/pacta/report.py
View file

@ -48,8 +48,11 @@ def render_markdown(card: dict[str, Any]) -> str:
lines.extend(
[
"",
"## macOS replay status",
"## Replay and attestation status",
"",
f"- Evidence mode: {evidence.get('evidence_mode') or 'local_or_fixture'}",
f"- Attestation provider: {evidence.get('attestation_provider') or 'not used'}",
f"- Attestation signature: {evidence.get('attestation_signature_status') or 'not used'}",
f"- Lean: {evidence.get('lean_version') or 'not detected'}",
f"- Lake: {evidence.get('lake_version') or 'not detected'}",
f"- Check log: {evidence.get('check_log_path') or 'not recorded'}",

48
src/pacta/risk.py
View file

@ -34,9 +34,29 @@ def score_claim_card(card: dict[str, Any]) -> RiskAssessment:
kind = card.get("kind", "unknown")
certificates = card.get("certificates") or []
exclusions = [str(item).lower() for item in card.get("exclusions") or []]
replay_blockers = list((card.get("evidence") or {}).get("replay_blockers") or [])
constraints = list(card.get("risk", {}).get("deployment_constraints") or [])
evidence = card.get("evidence") or {}
attested = evidence.get("evidence_mode") == "third_party_attestation"
blockers: list[str] = []
if replay_blockers:
blockers.extend(replay_blockers)
if any(_is_attestation_blocker(blocker) for blocker in replay_blockers):
return RiskAssessment(
"R0",
"Third-party attestation evidence was supplied but not accepted, so no usable verification evidence is available.",
blockers,
constraints,
)
if any(_is_verifier_capability_blocker(blocker) for blocker in replay_blockers):
return RiskAssessment(
"R0",
"Local verifier capability is unavailable, so no usable machine-checked replay evidence was produced on this machine.",
blockers,
constraints,
)
clean_proven = [
cert
for cert in certificates
@ -75,6 +95,14 @@ def score_claim_card(card: dict[str, Any]) -> RiskAssessment:
full_eddsa_excluded = any("eddsa" in item or "signature" in item for item in exclusions)
if not full_eddsa_excluded:
blockers.append("Full EdDSA boundary is not explicitly excluded in the claim card.")
if attested:
provider = evidence.get("attestation_provider") or "unknown provider"
return RiskAssessment(
"R3",
f"Trusted third-party provider {provider} attests that configured field and Edwards certificates are proven and axiom-clean for a specific lower-layer backend boundary.",
blockers,
constraints,
)
return RiskAssessment(
"R3",
"Configured field and Edwards implementation certificates are proven and axiom-clean for a specific lower-layer backend boundary.",
@ -110,3 +138,23 @@ def score_claim_card(card: dict[str, Any]) -> RiskAssessment:
blockers,
constraints,
)
def _is_verifier_capability_blocker(blocker: str) -> bool:
lowered = blocker.lower()
return any(
token in lowered
for token in (
"env_script",
"environment script",
"neither lean nor lake",
"missing lean dependency",
"unknown module prefix",
"missing verifier capability",
)
)
def _is_attestation_blocker(blocker: str) -> bool:
lowered = blocker.lower()
return "attestation" in lowered or "trusted provider" in lowered

32
tests/test_attestation.py Normal file
View file

@ -0,0 +1,32 @@
from pacta.attestation import load_attestation, validate_attestation
from pacta.claims import build_claim_card
from pacta.config import RepoConfig
def _repo():
return RepoConfig(
name="dalek-ed25519-verified",
url="https://github.com/saymrwulf/dalek-ed25519-verified.git",
kind="ed25519",
verified_backend="serial/u64",
certificates=["CurveFieldProofs.fieldImplementation", "CurveFieldProofs.edwardsImplementation"],
)
def test_trusted_attestation_can_drive_r3_claim(tmp_path):
raw = load_attestation("examples/dalek-ed25519.attestation.yaml")
result = validate_attestation(raw, _repo(), path="examples/dalek-ed25519.attestation.yaml", trusted_provider="example-proof-checker.invalid")
card = build_claim_card(_repo(), tmp_path, attestation=result)
assert result.accepted
assert card["risk"]["level"] == "R3"
assert "Trusted third-party provider" in card["risk"]["rationale"]
assert card["evidence"]["evidence_mode"] == "third_party_attestation"
assert any("Third-party proof-checking" in item for item in card["trusted_base"])
def test_untrusted_attestation_scores_r0(tmp_path):
raw = load_attestation("examples/dalek-ed25519.attestation.yaml")
result = validate_attestation(raw, _repo(), path="examples/dalek-ed25519.attestation.yaml")
card = build_claim_card(_repo(), tmp_path, attestation=result)
assert not result.accepted
assert card["risk"]["level"] == "R0"

9
tests/test_doctor.py Normal file
View file

@ -0,0 +1,9 @@
from pacta.cli import main
def test_doctor_reports_missing_env_script(capsys):
code = main(["doctor", "--config", "examples/repos.yaml", "--repo-name", "dalek-ed25519-verified", "--env-script", "/tmp/pacta-missing-env.sh"])
output = capsys.readouterr().out
assert code == 1
assert "env_script_status: missing" in output
assert "remediation:" in output

1
tests/test_profiles.py
View file

@ -22,4 +22,5 @@ def test_repo_config_merges_backend_warning():
def test_load_examples_config():
config = load_config("examples/repos.yaml")
assert config.repo_named("dalek-ed25519-verified").kind == "ed25519"
assert config.repo_named("dalek-ed25519-verified").env_script == "~/aeneas-toolchain/env.sh"
assert config.repo_named("pasta-pallas-verified").kind == "pasta_pallas"

13
tests/test_risk.py
View file

@ -44,3 +44,16 @@ def test_risk_ordering():
assert risk_at_least("R3", "R3")
assert not risk_at_least("R2", "R3")
assert not risk_at_least("RX", "R3")
def test_verifier_capability_blocker_scores_r0():
card = {
"kind": "ed25519",
"certificates": [
{"name": "CurveFieldProofs.fieldImplementation", "status": "unknown", "axiom_status": "not_checked"},
],
"evidence": {"replay_blockers": ["Missing Lean dependency/module prefix: Aeneas"]},
}
result = score_claim_card(card)
assert result.level == "R0"
assert "verifier capability" in result.rationale