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FA-9436 / Dependency resolution / Open access

Lockfile consistency report: Unrequested lock entries disappear from diagnostics · case 01

Unrequested lock entries disappear from diagnostics.

Verified by executionVariant 1 · 7 checks per implementationDownload source bundle ↓JSON ↗

ROOT CAUSE

The implementation substitutes [] for sorted(set(locked) - set(wanted)), so unrequested lock entries disappear from diagnostics.

THE FAILURE

The implementation substitutes [] for sorted(set(locked) - set(wanted)), so unrequested lock entries disappear from diagnostics.

Unsuccessful approach: The attempted repair substitutes sorted(set(wanted) - set(locked)). Fixture 2 still yields {'missing': ['a'], 'extra': ['a'], 'version': [], 'digest': [], 'source': []} instead of {'missing': ['a'], 'extra': [], 'version': [], 'digest': [], 'source': []}.

Case contract

Report missing names, extra names, version mismatches, digest mismatches, and source mismatches as separate sorted lists. Only compare names present on both sides.

Why this case matters

An offline model of lockfile consistency report, suitable for testing build and release tooling without external services.

1 / The failure

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(wanted, locked):
    common = set(wanted) & set(locked)
    return {
     'missing': sorted(set(wanted) - set(locked)),
     'extra': [],
     'version': sorted(n for n in common if wanted[n][0] != locked[n][0]),
     'digest': sorted(n for n in common if wanted[n][1] != locked[n][1]),
     'source': sorted(n for n in common if wanted[n][2] != locked[n][2])
    }
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('fixture 1', solve({}, {}), {'missing': [], 'extra': [], 'version': [], 'digest': [], 'source': []})
check('fixture 2', solve({'a': ('1', 'd', 'public')}, {}), {'missing': ['a'], 'extra': [], 'version': [], 'digest': [], 'source': []})
check('fixture 3', solve({}, {'b': ('1', 'd', 'public')}), {'missing': [], 'extra': ['b'], 'version': [], 'digest': [], 'source': []})
check('fixture 4', solve({'a': ('1', 'd', 'public')}, {'a': ('2', 'd', 'public')}), {'missing': [], 'extra': [], 'version': ['a'], 'digest': [], 'source': []})
check('fixture 5', solve({'a': ('1', 'd', 'public')}, {'a': ('1', 'e', 'public')}), {'missing': [], 'extra': [], 'version': [], 'digest': ['a'], 'source': []})
check('fixture 6', solve({'a': ('1', 'd', 'public')}, {'a': ('1', 'd', 'private')}), {'missing': [], 'extra': [], 'version': [], 'digest': [], 'source': ['a']})
check('fixture 7', solve({'a': ('1', 'd', 'public')}, {'a': ('1', 'd', 'public')}), {'missing': [], 'extra': [], 'version': [], 'digest': [], 'source': []})
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
fixture 1{'digest': [], 'extra': [], 'missing': [], 'source': [], 'version': []}{'digest': [], 'extra': [], 'missing': [], 'source': [], 'version': []}Passed
fixture 2{'digest': [], 'extra': [], 'missing': ['a'], 'source': [], 'version': []}{'digest': [], 'extra': [], 'missing': ['a'], 'source': [], 'version': []}Passed
fixture 3{'digest': [], 'extra': [], 'missing': [], 'source': [], 'version': []}{'digest': [], 'extra': ['b'], 'missing': [], 'source': [], 'version': []}Failed
fixture 4{'digest': [], 'extra': [], 'missing': [], 'source': [], 'version': ['a']}{'digest': [], 'extra': [], 'missing': [], 'source': [], 'version': ['a']}Passed
fixture 5{'digest': ['a'], 'extra': [], 'missing': [], 'source': [], 'version': []}{'digest': ['a'], 'extra': [], 'missing': [], 'source': [], 'version': []}Passed
fixture 6{'digest': [], 'extra': [], 'missing': [], 'source': ['a'], 'version': []}{'digest': [], 'extra': [], 'missing': [], 'source': ['a'], 'version': []}Passed
fixture 7{'digest': [], 'extra': [], 'missing': [], 'source': [], 'version': []}{'digest': [], 'extra': [], 'missing': [], 'source': [], 'version': []}Passed

SHA-256 / 3138464fab803025625ecb5e65ced673f2eb5477e70c22a21bc59e8d67d57c9f

2 / The unsuccessful fix

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(wanted, locked):
    common = set(wanted) & set(locked)
    return {
     'missing': sorted(set(wanted) - set(locked)),
     'extra': sorted(set(wanted) - set(locked)),
     'version': sorted(n for n in common if wanted[n][0] != locked[n][0]),
     'digest': sorted(n for n in common if wanted[n][1] != locked[n][1]),
     'source': sorted(n for n in common if wanted[n][2] != locked[n][2])
    }
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('fixture 1', solve({}, {}), {'missing': [], 'extra': [], 'version': [], 'digest': [], 'source': []})
check('fixture 2', solve({'a': ('1', 'd', 'public')}, {}), {'missing': ['a'], 'extra': [], 'version': [], 'digest': [], 'source': []})
check('fixture 3', solve({}, {'b': ('1', 'd', 'public')}), {'missing': [], 'extra': ['b'], 'version': [], 'digest': [], 'source': []})
check('fixture 4', solve({'a': ('1', 'd', 'public')}, {'a': ('2', 'd', 'public')}), {'missing': [], 'extra': [], 'version': ['a'], 'digest': [], 'source': []})
check('fixture 5', solve({'a': ('1', 'd', 'public')}, {'a': ('1', 'e', 'public')}), {'missing': [], 'extra': [], 'version': [], 'digest': ['a'], 'source': []})
check('fixture 6', solve({'a': ('1', 'd', 'public')}, {'a': ('1', 'd', 'private')}), {'missing': [], 'extra': [], 'version': [], 'digest': [], 'source': ['a']})
check('fixture 7', solve({'a': ('1', 'd', 'public')}, {'a': ('1', 'd', 'public')}), {'missing': [], 'extra': [], 'version': [], 'digest': [], 'source': []})
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
fixture 1{'digest': [], 'extra': [], 'missing': [], 'source': [], 'version': []}{'digest': [], 'extra': [], 'missing': [], 'source': [], 'version': []}Passed
fixture 2{'digest': [], 'extra': ['a'], 'missing': ['a'], 'source': [], 'version': []}{'digest': [], 'extra': [], 'missing': ['a'], 'source': [], 'version': []}Failed
fixture 3{'digest': [], 'extra': [], 'missing': [], 'source': [], 'version': []}{'digest': [], 'extra': ['b'], 'missing': [], 'source': [], 'version': []}Failed
fixture 4{'digest': [], 'extra': [], 'missing': [], 'source': [], 'version': ['a']}{'digest': [], 'extra': [], 'missing': [], 'source': [], 'version': ['a']}Passed
fixture 5{'digest': ['a'], 'extra': [], 'missing': [], 'source': [], 'version': []}{'digest': ['a'], 'extra': [], 'missing': [], 'source': [], 'version': []}Passed
fixture 6{'digest': [], 'extra': [], 'missing': [], 'source': ['a'], 'version': []}{'digest': [], 'extra': [], 'missing': [], 'source': ['a'], 'version': []}Passed
fixture 7{'digest': [], 'extra': [], 'missing': [], 'source': [], 'version': []}{'digest': [], 'extra': [], 'missing': [], 'source': [], 'version': []}Passed

SHA-256 / d47966c3e9c0805ecda65c5d30b78a51f118b8de71080b05da71e10dd15311f5

HELD IN THE MEMBER ARCHIVE

The verified repair and its recorded checks are member-only.

This mechanism has 7 recorded checks per implementation. The open-access tier publishes the failure and the unsuccessful fix; the repaired source that passes every check, and the observations that prove it, are available to members.

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Verification & scope

This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.

Observations recorded using Python 3.12.14 at 2026-09-29T14:38:30.082684+00:00.

Case digest / b015bea9185a8226cab7c7671cef6af835b9a1a85b03039176d08dfb6c7553fc