Preserve reference closure in caches and pruned dependency graphs

Summary#

Problem#

Caches and pruned lockfiles break when keys include volatile fields or when pruning keeps top-level references but drops the concrete transitive entries they still point to.

Solution#

Canonicalize cache keys around stable semantic inputs and preserve the full reference closure of retained objects. The recurring pattern was to remove unstable selection state from cache identity, keep transitive snapshot/package entries referenced by retained importers, and carry related config markers or patches so the pruned artifact remains self-consistent.

Failure Modes#

Cache cardinality explodes because ephemeral state is part of the key
Frozen install fails with missing dependency or config mismatch errors
Lifecycle scripts recurse because a required env/config marker was filtered out
Pruned artifact looks valid structurally but is not executable

Sources#

https://github.com/tensorflow/tensorflow/pull/121246
https://github.com/tensorflow/tensorflow/pull/121261
https://github.com/tensorflow/tensorflow/pull/121165
https://github.com/tensorflow/tensorflow/pull/121080
https://github.com/tensorflow/tensorflow/pull/121253
https://github.com/tensorflow/tensorflow/pull/119921
https://github.com/tensorflow/tensorflow/pull/121054
https://github.com/tensorflow/tensorflow/pull/121240
https://github.com/tensorflow/tensorflow/pull/121257
https://github.com/tensorflow/tensorflow/pull/121256
https://github.com/tensorflow/tensorflow/pull/121254
https://github.com/tensorflow/tensorflow/pull/120680
https://github.com/huggingface/transformers/pull/46660
https://github.com/huggingface/transformers/pull/46659
https://github.com/huggingface/transformers/pull/46624
https://github.com/huggingface/transformers/pull/46374
https://github.com/huggingface/transformers/pull/46668
https://github.com/microsoft/ML-For-Beginners/pull/978
https://github.com/microsoft/ML-For-Beginners/pull/971
https://github.com/microsoft/ML-For-Beginners/pull/967
https://github.com/microsoft/ML-For-Beginners/pull/970
https://github.com/ClickHouse/ClickHouse/pull/107391
https://github.com/ClickHouse/ClickHouse/pull/106376
https://github.com/ClickHouse/ClickHouse/pull/107467
https://github.com/ClickHouse/ClickHouse/pull/107201
https://github.com/ClickHouse/ClickHouse/pull/103552
https://github.com/ClickHouse/ClickHouse/pull/106078
https://github.com/ClickHouse/ClickHouse/pull/107525
https://github.com/ClickHouse/ClickHouse/pull/107523
https://github.com/ClickHouse/ClickHouse/pull/107521
https://github.com/ClickHouse/ClickHouse/pull/107519
https://github.com/ClickHouse/ClickHouse/pull/107517
https://github.com/ClickHouse/ClickHouse/pull/107414
https://github.com/ClickHouse/ClickHouse/pull/107352
https://github.com/ClickHouse/ClickHouse/pull/107362
https://github.com/ClickHouse/ClickHouse/pull/105522
https://github.com/vercel/turborepo/pull/13086
https://github.com/vercel/turborepo/pull/13085
https://github.com/vercel/turborepo/pull/13084
https://github.com/vercel/turborepo/pull/13079
https://github.com/vercel/turborepo/pull/13077
https://github.com/vercel/turborepo/pull/13074
https://github.com/vercel/turborepo/pull/13076
https://github.com/vercel/turborepo/pull/13075
https://github.com/vercel/turborepo/pull/13073
https://github.com/vercel/turborepo/pull/13071
https://github.com/vercel/turborepo/pull/13069
https://github.com/vercel/turborepo/pull/13070
https://github.com/vercel/turborepo/pull/13068
https://github.com/vercel/turborepo/pull/13067
mined_at: 2026-06-15T15:12:32Z

Sagwan Revalidation 2026-06-15T15:54:25Z#

verdict: ok
note: 일반 원칙 중심이라 현재 캐시·락파일 pruning practice와도 부합함

Sagwan Revalidation 2026-06-16T16:22:22Z#

verdict: ok
note: 일반 원칙 중심이라 하루 사이 사실성·실무 관행 변화 가능성이 낮음

Sagwan Revalidation 2026-06-17T17:32:35Z#

verdict: ok
note: 일반 원칙 중심이라 하루 사이 낡을 가능성이 낮고 재사용 가능함

Sagwan Revalidation 2026-06-18T18:22:23Z#

verdict: ok
note: 캐시 키 안정화와 참조 폐쇄 보존 원칙은 여전히 유효하다.