FA-9381 / Dependency resolution / Open access

Dependency group activation: Runtime dependencies require opt-in · case 01

Runtime dependencies require opt-in.

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

ROOT CAUSE

The implementation substitutes group not in enabled for group != 'runtime' and group not in enabled, so runtime dependencies require opt-in.

VERIFIED REPAIR

Always include runtime and enabled optional groups.

Unsuccessful approach: The attempted repair substitutes group != 'runtime'. Fixture 4 still yields [] instead of ['a'].

Case contract

Return sorted unique dependency names from runtime and explicitly enabled optional groups. Exclude inactive markers and disabled entries; a dependency appearing in multiple groups is emitted once.

Why this case matters

An offline model of dependency group activation, 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(rows, enabled):
    selected = []
    for name, group, marker, disabled in rows:
        if group not in enabled: continue
        if not marker: continue
        if disabled: continue
        selected.append(name)
    return sorted(set(selected))
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('fixture 1', solve([], []), [])
check('fixture 2', solve([('a', 'runtime', True, False)], []), ['a'])
check('fixture 3', solve([('a', 'dev', True, False)], []), [])
check('fixture 4', solve([('a', 'dev', True, False)], ['dev']), ['a'])
check('fixture 5', solve([('a', 'runtime', False, False)], []), [])
check('fixture 6', solve([('a', 'runtime', True, True)], []), [])
check('fixture 7', solve([('z', 'runtime', True, False), ('a', 'dev', True, False), ('z', 'dev', True, False)], ['dev']), ['a', 'z'])
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	`[]`	`[]`	Passed
fixture 2	`[]`	`['a']`	Failed
fixture 3	`[]`	`[]`	Passed
fixture 4	`['a']`	`['a']`	Passed
fixture 5	`[]`	`[]`	Passed
fixture 6	`[]`	`[]`	Passed
fixture 7	`['a', 'z']`	`['a', 'z']`	Passed

SHA-256 / 573fef1dccf538756c06db6520d01e36099bef31d0fc37d483d55d7bf87d1466

2 / The unsuccessful fix

Exit 1

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

N = 1
observations = []
def solve(rows, enabled):
    selected = []
    for name, group, marker, disabled in rows:
        if group != 'runtime': continue
        if not marker: continue
        if disabled: continue
        selected.append(name)
    return sorted(set(selected))
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('fixture 1', solve([], []), [])
check('fixture 2', solve([('a', 'runtime', True, False)], []), ['a'])
check('fixture 3', solve([('a', 'dev', True, False)], []), [])
check('fixture 4', solve([('a', 'dev', True, False)], ['dev']), ['a'])
check('fixture 5', solve([('a', 'runtime', False, False)], []), [])
check('fixture 6', solve([('a', 'runtime', True, True)], []), [])
check('fixture 7', solve([('z', 'runtime', True, False), ('a', 'dev', True, False), ('z', 'dev', True, False)], ['dev']), ['a', 'z'])
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	`[]`	`[]`	Passed
fixture 2	`['a']`	`['a']`	Passed
fixture 3	`[]`	`[]`	Passed
fixture 4	`[]`	`['a']`	Failed
fixture 5	`[]`	`[]`	Passed
fixture 6	`[]`	`[]`	Passed
fixture 7	`['z']`	`['a', 'z']`	Failed

SHA-256 / 7e0892c7ad287689ce666b08cea83a530127303c3aef8722a81c58851511cdfa

3 / The verified repair

Exit 0

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

N = 1
observations = []
def solve(rows, enabled):
    selected = []
    for name, group, marker, disabled in rows:
        if group != 'runtime' and group not in enabled: continue
        if not marker: continue
        if disabled: continue
        selected.append(name)
    return sorted(set(selected))
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('fixture 1', solve([], []), [])
check('fixture 2', solve([('a', 'runtime', True, False)], []), ['a'])
check('fixture 3', solve([('a', 'dev', True, False)], []), [])
check('fixture 4', solve([('a', 'dev', True, False)], ['dev']), ['a'])
check('fixture 5', solve([('a', 'runtime', False, False)], []), [])
check('fixture 6', solve([('a', 'runtime', True, True)], []), [])
check('fixture 7', solve([('z', 'runtime', True, False), ('a', 'dev', True, False), ('z', 'dev', True, False)], ['dev']), ['a', 'z'])
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	`[]`	`[]`	Passed
fixture 2	`['a']`	`['a']`	Passed
fixture 3	`[]`	`[]`	Passed
fixture 4	`['a']`	`['a']`	Passed
fixture 5	`[]`	`[]`	Passed
fixture 6	`[]`	`[]`	Passed
fixture 7	`['a', 'z']`	`['a', 'z']`	Passed

SHA-256 / 1d8ef41da514736c11f17d6de7c87614627de2794085db73fb84824afa7040f1

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 2026-09-29T14:38:29.490014+00:00.

Case digest / 739fe67f24899cd2c845b3fc8b8b2d310c9b6482fc97ffea6c8a7b227eef7592