FA-9831 / Packaging / Open access
Wheel compatibility admission: Yanked wheel files remain selectable · case 01
Yanked wheel files remain selectable.
ROOT CAUSE
The implementation substitutes True for not wheel['yanked'], so yanked wheel files remain selectable.
VERIFIED REPAIR
Reject yanked wheels.
Unsuccessful approach: The attempted repair substitutes wheel['yanked']. Fixture 1 still yields False instead of True.
Case contract
Accept a wheel when at least one Python tag, ABI tag, and platform tag is supported; universal tags py3, none, and any have explicit support. Reject yanked wheels and incompatible minimum interpreter versions.
Why this case matters
An offline model of wheel compatibility admission, 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(wheel, python, abis, platforms, version):
return (True and bool(set(wheel['python']) & (set(python) | {'py3'})) and bool(set(wheel['abi']) & (set(abis) | {'none'})) and bool(set(wheel['platform']) & (set(platforms) | {'any'})) and version >= wheel['minimum'])
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('fixture 1', solve({'yanked': False, 'python': ['cp311'], 'abi': ['cp311'], 'platform': ['linux'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), True)
check('fixture 2', solve({'yanked': True, 'python': ['cp311'], 'abi': ['cp311'], 'platform': ['linux'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), False)
check('fixture 3', solve({'yanked': False, 'python': ['py3'], 'abi': ['cp311'], 'platform': ['linux'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), True)
check('fixture 4', solve({'yanked': False, 'python': ['cp312'], 'abi': ['cp311'], 'platform': ['linux'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), False)
check('fixture 5', solve({'yanked': False, 'python': ['cp311'], 'abi': ['none'], 'platform': ['linux'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), True)
check('fixture 6', solve({'yanked': False, 'python': ['cp311'], 'abi': ['cp312'], 'platform': ['linux'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), False)
check('fixture 7', solve({'yanked': False, 'python': ['cp311'], 'abi': ['cp311'], 'platform': ['any'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), True)
check('fixture 8', solve({'yanked': False, 'python': ['cp311'], 'abi': ['cp311'], 'platform': ['win'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), False)
check('fixture 9', solve({'yanked': False, 'python': ['cp311'], 'abi': ['cp311'], 'platform': ['linux'], 'minimum': (3, 10)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), True)
check('fixture 10', solve({'yanked': False, 'python': ['cp311'], 'abi': ['cp311'], 'platform': ['linux'], 'minimum': (3, 12)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), False)
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 fixture | Actual | Expected | Outcome |
|---|---|---|---|
| fixture 1 | True | True | Passed |
| fixture 2 | True | False | Failed |
| fixture 3 | True | True | Passed |
| fixture 4 | False | False | Passed |
| fixture 5 | True | True | Passed |
| fixture 6 | False | False | Passed |
| fixture 7 | True | True | Passed |
| fixture 8 | False | False | Passed |
| fixture 9 | True | True | Passed |
| fixture 10 | False | False | Passed |
SHA-256 / 1f240f6f44bb82d2f1439538b40c9ea6a8cdba0d89f0cb82b0edf3b4495ea226
2 / The unsuccessful fix
Exit 1"""Failure Map reference implementation. Python standard library only."""
import json
N = 1
observations = []
def solve(wheel, python, abis, platforms, version):
return (wheel['yanked'] and bool(set(wheel['python']) & (set(python) | {'py3'})) and bool(set(wheel['abi']) & (set(abis) | {'none'})) and bool(set(wheel['platform']) & (set(platforms) | {'any'})) and version >= wheel['minimum'])
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('fixture 1', solve({'yanked': False, 'python': ['cp311'], 'abi': ['cp311'], 'platform': ['linux'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), True)
check('fixture 2', solve({'yanked': True, 'python': ['cp311'], 'abi': ['cp311'], 'platform': ['linux'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), False)
check('fixture 3', solve({'yanked': False, 'python': ['py3'], 'abi': ['cp311'], 'platform': ['linux'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), True)
check('fixture 4', solve({'yanked': False, 'python': ['cp312'], 'abi': ['cp311'], 'platform': ['linux'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), False)
check('fixture 5', solve({'yanked': False, 'python': ['cp311'], 'abi': ['none'], 'platform': ['linux'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), True)
check('fixture 6', solve({'yanked': False, 'python': ['cp311'], 'abi': ['cp312'], 'platform': ['linux'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), False)
check('fixture 7', solve({'yanked': False, 'python': ['cp311'], 'abi': ['cp311'], 'platform': ['any'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), True)
check('fixture 8', solve({'yanked': False, 'python': ['cp311'], 'abi': ['cp311'], 'platform': ['win'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), False)
check('fixture 9', solve({'yanked': False, 'python': ['cp311'], 'abi': ['cp311'], 'platform': ['linux'], 'minimum': (3, 10)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), True)
check('fixture 10', solve({'yanked': False, 'python': ['cp311'], 'abi': ['cp311'], 'platform': ['linux'], 'minimum': (3, 12)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), False)
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 fixture | Actual | Expected | Outcome |
|---|---|---|---|
| fixture 1 | False | True | Failed |
| fixture 2 | True | False | Failed |
| fixture 3 | False | True | Failed |
| fixture 4 | False | False | Passed |
| fixture 5 | False | True | Failed |
| fixture 6 | False | False | Passed |
| fixture 7 | False | True | Failed |
| fixture 8 | False | False | Passed |
| fixture 9 | False | True | Failed |
| fixture 10 | False | False | Passed |
SHA-256 / d00b5e3cc2d1b88a0ed6ac0a6f58a53b8463a97fd7707f6d1db182a0d4726344
3 / The verified repair
Exit 0"""Failure Map reference implementation. Python standard library only."""
import json
N = 1
observations = []
def solve(wheel, python, abis, platforms, version):
return (not wheel['yanked'] and bool(set(wheel['python']) & (set(python) | {'py3'})) and bool(set(wheel['abi']) & (set(abis) | {'none'})) and bool(set(wheel['platform']) & (set(platforms) | {'any'})) and version >= wheel['minimum'])
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('fixture 1', solve({'yanked': False, 'python': ['cp311'], 'abi': ['cp311'], 'platform': ['linux'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), True)
check('fixture 2', solve({'yanked': True, 'python': ['cp311'], 'abi': ['cp311'], 'platform': ['linux'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), False)
check('fixture 3', solve({'yanked': False, 'python': ['py3'], 'abi': ['cp311'], 'platform': ['linux'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), True)
check('fixture 4', solve({'yanked': False, 'python': ['cp312'], 'abi': ['cp311'], 'platform': ['linux'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), False)
check('fixture 5', solve({'yanked': False, 'python': ['cp311'], 'abi': ['none'], 'platform': ['linux'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), True)
check('fixture 6', solve({'yanked': False, 'python': ['cp311'], 'abi': ['cp312'], 'platform': ['linux'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), False)
check('fixture 7', solve({'yanked': False, 'python': ['cp311'], 'abi': ['cp311'], 'platform': ['any'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), True)
check('fixture 8', solve({'yanked': False, 'python': ['cp311'], 'abi': ['cp311'], 'platform': ['win'], 'minimum': (3, 11)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), False)
check('fixture 9', solve({'yanked': False, 'python': ['cp311'], 'abi': ['cp311'], 'platform': ['linux'], 'minimum': (3, 10)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), True)
check('fixture 10', solve({'yanked': False, 'python': ['cp311'], 'abi': ['cp311'], 'platform': ['linux'], 'minimum': (3, 12)}, ['cp311'], ['cp311'], ['linux'], (3, 11)), False)
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 fixture | Actual | Expected | Outcome |
|---|---|---|---|
| fixture 1 | True | True | Passed |
| fixture 2 | False | False | Passed |
| fixture 3 | True | True | Passed |
| fixture 4 | False | False | Passed |
| fixture 5 | True | True | Passed |
| fixture 6 | False | False | Passed |
| fixture 7 | True | True | Passed |
| fixture 8 | False | False | Passed |
| fixture 9 | True | True | Passed |
| fixture 10 | False | False | Passed |
SHA-256 / 53f34d0ee272132809003bdc4b8964e7c79eaa0130e806af2554540e33a6f88e
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 2026-09-29T14:38:33.529506+00:00.
Case digest / 820487234f4a3dbcf6eb04152045c915155a17f67b3fff08cddc6664978d15a2