fix(update): re-check transitive dependencies' own semver ranges during apm update#2053
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nadav-y
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Pull request overview
This PR fixes apm update so that semver-ranged dependencies are re-evaluated against the remote at any depth (including transitives), and extends the staged-backup/rollback mechanism so update-plan confirmation can safely decline/abort without leaving apm_modules/ ahead of apm.lock.yaml.
Changes:
- Widen dependency resolution so existing install paths can still invoke
download_callbackwhenupdate_refs=Trueand the dep is a non-local, non-proxied semver ref. - Move update rollback staging to an inline
backup_before_overwrite()call insidedownload_callback, and reconcile staged backups at the plan-confirmation gate (plus early restore on resolve-phase exceptions). - Add/refresh unit tests for the new recheck predicate and the inline backup/restore behavior; add changelog entries for #2050 and this fix.
Reviewed changes
Copilot reviewed 9 out of 9 changed files in this pull request and generated 1 comment.
Show a summary per file
| File | Description |
|---|---|
src/apm_cli/deps/apm_resolver.py |
Adds update_refs + _should_force_recheck() and widens the existing-path gate so transitive semver deps can be rechecked. |
src/apm_cli/install/phases/resolve.py |
Removes direct-only pre-purge and stages backups inline before overwrites; threads update_refs into the resolver. |
src/apm_cli/install/phases/update_backup.py |
Introduces the inline backup + restore reconciliation helpers for update-plan gating. |
src/apm_cli/install/pipeline.py |
Plumbs plan_callback into context and ensures backups are reconciled on plan decision (and restored on resolve exceptions when staged). |
src/apm_cli/install/context.py |
Documents and adds plan_callback and the new update_backups shape on InstallContext. |
tests/unit/deps/test_apm_resolver_edge_cases.py |
Adds coverage for _should_force_recheck() and for callback invocation on existing paths when updating. |
tests/unit/install/phases/test_update_backup.py |
New unit tests for sanitization + inline staging + restore behavior (including a transitive-only restore case). |
tests/unit/test_install_pipeline_orchestration.py |
Adds coverage ensuring resolve-phase failures trigger restore when backups were staged. |
CHANGELOG.md |
Adds Unreleased fixes entries for #2050 and #2053. |
Addresses Copilot review on microsoft#2053: backup_before_overwrite suppressed every exception during staging and returned False, so a rename/mkdir failure on an existing install path let the caller proceed straight to overwriting it with no rollback point staged. A later declined/aborted update would then see that dep in ctx.callback_downloaded but absent from ctx.update_backups -- indistinguishable from a fresh add -- and delete it outright, permanently losing the original content. Now raises once staging is actually required (plan_callback set and install_path exists), instead of swallowing the error. The resolve-phase exception handler already added in pipeline.py (for microsoft#2050's Copilot review) restores any backups staged for other deps this run before re-raising, so the whole apm update aborts cleanly -- recoverable, unlike a silent, undetected loss of the original content. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
APM Review Panel:
|
| Persona | B | R | N | Takeaway |
|---|---|---|---|---|
| Python Architect | 0 | 1 | 2 | Well-decomposed backup/restore module with correct fail-closed semantics; duplicated predicate is the main structural concern. |
| CLI Logging Expert | 0 | 2 | 1 | Backup/restore lifecycle is completely silent -- no verbose_detail on stage, no user-facing message on restore after decline/abort. |
| DevX UX Expert | 0 | 0 | 2 | Transitive semver re-resolution fix is UX-sound: update reaches full depth, declined plans restore cleanly, install is unaffected, no command-surface changes. |
| Supply Chain Security Expert | 0 | 1 | 1 | Backup module uses ad-hoc sanitization instead of the sanctioned path_security guards; suppress(Exception) in restore silences restore failures. |
| OSS Growth Hacker | 0 | 0 | 3 | High-trust correctness fix with excellent CHANGELOG prose; minor release-note framing opportunity missed but nothing blocks merge. |
| Auth Expert | 0 | 0 | 0 | No auth surface affected: auth_resolver still flows to resolver unchanged; new backup/restore module is auth-agnostic; wider download_callback reach reuses existing per-dep token resolution. |
| Doc Writer | 0 | 2 | 2 | Bug 3 (fail-closed staging failure) has no CHANGELOG entry; update.md omits transitive semver recheck behavior; two nits on mechanism wording and attribution style. |
| Test Coverage Expert | 0 | 2 | 1 | Strong unit coverage on predicate + backup/restore module; pipeline decline path missing restore assertion; no integration-tier test for transitive semver re-resolution flow. |
| Performance Expert | 0 | 1 | 4 | Correct approach; added cost is O(unique_repos) network RTTs for semver transitive deps during apm update, zero regression on apm install; backup I/O is ~1 rename per dep. |
B = blocking-severity findings, R = recommended, N = nits.
Counts are signal strength, not gates. The maintainer ships.
Top 5 follow-ups
- [Test Coverage Expert] Add unit assertion that decline path calls restore_update_backups(ctx, keep_new=False) -- Missing automated guardrail on a secure-by-default surface: the user promise 'decline an update and nothing changes' has no test proving restore is invoked.
- [Supply Chain Security Expert] Route backup_path through ensure_path_within and use safe_rmtree instead of _rrm in restore -- APM's security model requires all path deletions to flow through sanctioned chokepoints. Zero-behavioral-change fix.
- [Python Architect] Extract shared predicate from _should_force_recheck and _force_semver_resolve -- Three panelists independently flagged the duplicated gate condition. A shared function prevents silent drift on a correctness-critical predicate.
- [Doc Writer] Add CHANGELOG entry for Bug 3 (fail-closed on backup-staging failure) and update update.md to mention transitive semver re-evaluation -- Bug 3 has no CHANGELOG bullet; docs page scopes re-resolution to direct deps only, which is now inaccurate.
- [CLI Logging Expert] Emit verbose_detail on backup staging and user-facing summary on restore after decline/abort -- Replacement for the removed _purge log; restore after decline should confirm rollback happened.
Architecture
classDiagram
direction LR
class APMDependencyResolver {
<<Strategy>>
+_update_refs bool
+_download_callback DownloadCallback
+_should_force_recheck(dep_ref) bool
+_try_load_dependency_package(dep_ref, parent_chain, parent_pkg) APMPackage
}
class InstallContext {
<<ValueObject>>
+plan_callback Any
+update_backups dict
+callback_downloaded dict
+apm_dir Path
+apm_modules_dir Path
}
class DependencyReference {
<<ValueObject>>
+ref_kind str
+is_local bool
+get_unique_key() str
+get_install_path(modules_dir) Path
}
class backup_before_overwrite {
<<Pure Function>>
+__call__(ctx, dep_ref, install_path) bool
}
class restore_update_backups {
<<Pure Function>>
+__call__(ctx, keep_new) None
}
class download_callback {
<<Closure>>
+_force_semver_resolve bool
}
class run_install_pipeline {
<<IOBoundary>>
}
APMDependencyResolver ..> DependencyReference : checks ref_kind
APMDependencyResolver ..> download_callback : invokes when gate opens
download_callback ..> backup_before_overwrite : calls before overwrite
download_callback ..> InstallContext : writes callback_downloaded
backup_before_overwrite ..> InstallContext : writes update_backups
backup_before_overwrite ..> DependencyReference : reads unique key
run_install_pipeline ..> restore_update_backups : calls on resolve failure and plan gate
restore_update_backups ..> InstallContext : reads update_backups and callback_downloaded
classDef touched fill:#fff3b0,stroke:#d47600
class APMDependencyResolver:::touched
class backup_before_overwrite:::touched
class restore_update_backups:::touched
class InstallContext:::touched
class download_callback:::touched
flowchart TD
A["apm update CLI"] --> B["run_install_pipeline\npipeline.py"]
B --> C["_run_phase resolve\npipeline.py"]
C --> D["APMDependencyResolver.resolve\napm_resolver.py"]
D --> E{"install_path.exists()\nAND NOT _should_force_recheck?"}
E -->|"Yes: skip"| F["Load cached APMPackage\nfrom disk"]
E -->|"No: gate open"| G["download_callback\nresolve.py"]
G --> H{"_force_semver_resolve?"}
H -->|"Yes"| I["[NET] git ls-remote"]
H -->|"No"| J["Registry or git path"]
I --> K["[FS] backup_before_overwrite\nupdate_backup.py"]
J --> K
K --> L{"plan_callback set\nAND path exists?"}
L -->|"Yes"| M["[FS] install_path.rename backup_path"]
L -->|"No"| N["No-op"]
M --> O["ctx.update_backups[dep_key] = entry"]
N --> P["[NET] download/clone to install_path"]
O --> P
P --> Q["Return to BFS"]
C -->|"Exception"| R["[FS] restore_update_backups\nkeep_new=False"]
R --> S["Re-raise"]
B --> T["build_update_plan"]
T --> U["plan_callback confirm gate"]
U -->|"Declined / abort"| V["[FS] restore_update_backups\nkeep_new=False"]
U -->|"Confirmed"| W["[FS] restore_update_backups\nkeep_new=True"]
V --> X["Return empty InstallResult"]
W --> Y["Continue to integrate phase"]
Recommendation
This is a correctness fix for a real silent-failure gap in apm update, architecturally sound, with strong test coverage from a contributor. No panelist raised a blocking finding. The five follow-ups (decline-path test assertion, path containment, predicate dedup, CHANGELOG/docs gap, verbose logging) should be filed as issues and resolved before the next release, but none block merge of this PR.
Full per-persona findings
Python Architect
-
[recommended] _should_force_recheck duplicates _force_semver_resolve -- extract shared predicate at
src/apm_cli/deps/apm_resolver.py:886
APMDependencyResolver._should_force_recheck and download_callback's _force_semver_resolve encode the same boolean condition with a 'kept in sync deliberately' comment. Two copies of a gate predicate that must agree is a maintenance hazard. Extractis_semver_recheck_eligible(dep_ref, update_refs)into a shared location.
Suggested: Extract todeps/semver_utils.pyor a DependencyReference property. -
[nit] backup_before_overwrite uses getattr defensively on a typed dataclass at
src/apm_cli/install/phases/update_backup.py:97
getattr guards are for loosely-mocked ctx in tests but undocumented in the function. A comment prevents future contributors from removing these. -
[nit] plan_callback typed as Any at
src/apm_cli/install/context.py:82
Known signature (plan: UpdatePlan) -> bool warrantsCallable[[UpdatePlan], bool] | None.
CLI Logging Expert
-
[recommended] backup_before_overwrite is completely silent at
src/apm_cli/install/phases/update_backup.py:67
Removed _purge_cached_semver_paths_for_update had a verbose_detail line. New backup emits nothing. Function returns True when staged so the caller can log -- but no caller uses the return value.
Suggested:if backup_before_overwrite(ctx, dep_ref, install_path): logger.verbose_detail(f'[*] --update: staged rollback backup for {dep_ref.get_unique_key()}') -
[recommended] restore_update_backups emits no user-facing output when rolling back a declined/aborted update at
src/apm_cli/install/phases/update_backup.py:129
User declined the update but sees no confirmation rollback happened. Consider returning count of restored deps and emitting '[i] Restored N package(s) to pre-update state'. -
[nit] backup_before_overwrite docstring promises 'so the caller can log accordingly' but no caller uses the return value at
src/apm_cli/install/phases/update_backup.py:102
DevX UX Expert
-
[nit] No user-visible diagnostic when backup staging raises at
src/apm_cli/install/phases/update_backup.py:114
Raw OSError propagates without an actionable message. Consider wrapping with catch-and-reraise adding a one-line human hint. -
[nit] Duplicated predicate between _should_force_recheck and _force_semver_resolve at
src/apm_cli/deps/apm_resolver.py:886
Supply Chain Security Expert
-
[recommended] backup_path is not validated with ensure_path_within; deletions use _rrm instead of safe_rmtree at
src/apm_cli/install/phases/update_backup.py:113
Codebase security model requires path containment through ensure_path_within / safe_rmtree. Ad-hoc regex sanitization is a documented bug pattern. Zero-behavioral-change fix.
Suggested:from apm_cli.utils.path_security import ensure_path_within; ensure_path_within(backup_path, backup_root)after computing backup_path. Use safe_rmtree in restore_update_backups. -
[nit] suppress(Exception) in restore_update_backups silences restore failures at
src/apm_cli/install/phases/update_backup.py:178
If restore fails, user silently ends up with missing package while lockfile references old version. Log a warning on suppressed exceptions.
OSS Growth Hacker
-
[nit] CHANGELOG entry is maintainer-facing, not user-facing at
CHANGELOG.md
'download_callback only ran for a dependency whose install path didn't already exist' is implementation detail. User-facing rewrite: 'apm update now picks up newly published versions of transitive dependencies constrained by semver ranges (e.g. ^1.0.0)'. -
[nit] Two related entries (fix(update): stop declined/dry-run apm update from mutating apm_modules/ #2050 + fix(update): re-check transitive dependencies' own semver ranges during apm update #2053) could share a single story beat for stronger release impact.
-
[nit] Story angle worth surfacing at release time: 'apm update now re-evaluates semver ranges at every depth -- not just direct deps.'
Auth Expert
No findings.
Doc Writer
-
[recommended] Bug 3 (fail-closed on backup-staging failure) is absent from CHANGELOG at
CHANGELOG.md
Commit 813d1fb introduces a distinct user-visible safety guarantee with no CHANGELOG bullet.
Suggested: Add: 'apm updatenow fails closed when staging a rollback point fails before overwriting an existing dependency: a rename or mkdir error during backup staging aborts the whole update cleanly instead of silently losing original content. (by @nadav-y) (fix(update): re-check transitive dependencies' own semver ranges during apm update #2053)' -
[recommended] docs/reference/cli/update.md does not mention transitive semver ranges are now re-evaluated at
docs/src/content/docs/reference/cli/update.md:91
Docs scopes re-resolution to direct deps only. Users with deep dep trees may see more packages updated than before. -
[nit] fix(update): stop declined/dry-run apm update from mutating apm_modules/ #2050 CHANGELOG entry says 'staged and rolled back' -- mechanism is backup-and-restore, not download staging.
-
[nit] Attribution format deviates from predominant 0.24.0 style: use '(by @nadav-y, fix(update): re-check transitive dependencies' own semver ranges during apm update #2053)' not '(by @nadav-y) (fix(update): re-check transitive dependencies' own semver ranges during apm update #2053)'.
Test Coverage Expert
-
[recommended] Plan callback decline path does not assert restore_update_backups is called with keep_new=False at
tests/unit/test_install_pipeline_orchestration.py:204
test_plan_callback_false_returns_early has no guardrail on the critical safety net for 'say no to update'.
Proof (missing):tests/unit/test_install_pipeline_orchestration.py::TestRunInstallPipelinePlanCallback::test_plan_callback_false_returns_early_asserts_restore-- proves: A declined apm update restores backed-up install paths [devx, secure-by-default] -
[recommended] No integration-tier test for end-to-end transitive semver re-resolution backup/restore cycle at
tests/integration/test_update_e2e.py
Cross-module contract covered only by unit mocks. Install pipeline floor tier is integration-with-fixtures.
Proof (missing):tests/integration/test_update_e2e.py::TestUpdateE2E::test_update_dry_run_transitive_semver_restores_modules[devx, secure-by-default] -
[nit] test_plan_callback_true_continues does not assert restore_update_backups(ctx, keep_new=True) is called at
tests/unit/test_install_pipeline_orchestration.py:244
Performance Expert
-
[recommended] Added network cost is O(unique_repos) RTTs via ref_resolver_cache sharing -- acceptable for explicit apm update.
get_shared_ref_resolver reuses one RefResolver per (host, token) pair. For 5-15 transitive deps across 3-4 repos: 0-4 extra ls-remote calls. Acceptable. -
[nit] _should_force_recheck is zero-cost on apm install (update_refs=False short-circuits).
-
[nit] Duplicate predicate is sync-maintenance risk, not a perf bug.
-
[nit] backup_before_overwrite adds ~3ms I/O for 30 transitive deps -- negligible.
-
[nit] Dedup gate prevents O(n^2) re-checks in diamond deps. Correct.
This panel is advisory. It does not block merge. Re-apply the panel-review label after addressing feedback to re-run.
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Addresses Copilot review on microsoft#2053: backup_before_overwrite suppressed every exception during staging and returned False, so a rename/mkdir failure on an existing install path let the caller proceed straight to overwriting it with no rollback point staged. A later declined/aborted update would then see that dep in ctx.callback_downloaded but absent from ctx.update_backups -- indistinguishable from a fresh add -- and delete it outright, permanently losing the original content. Now raises once staging is actually required (plan_callback set and install_path exists), instead of swallowing the error. The resolve-phase exception handler already added in pipeline.py (for microsoft#2050's Copilot review) restores any backups staged for other deps this run before re-raising, so the whole apm update aborts cleanly -- recoverable, unlike a silent, undetected loss of the original content. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Addresses review panel recommendations on PR microsoft#2053: - pipeline.py: Return InstallResult(disposition=CANCELLED) on declined plan instead of bare InstallResult() -- bare InstallResult defaults to SUCCESS disposition and erroneously fires post-install lifecycle scripts via InstallService even when the user declined the update plan. - update_backup.py: Add ensure_path_within guard before rename in backup_before_overwrite (matches path_security convention used in install/ peers). Add verbose_detail breadcrumbs for backup staging and restore reconciliation so agents running --verbose can observe which deps are staged/restored. Replace broad suppress(Exception) blocks in restore_update_backups with try/except that logs failures at verbose level instead of silently swallowing them. - test_install_pipeline_orchestration.py: Fix broken patch targets in TestRunInstallPipelineResolveFailureRestoresBackups -- patching apm_cli.install.phases.resolve (the package attribute) only works when the submodule is already imported as a side effect of an earlier test. Change to patching apm_cli.install.phases.resolve.run directly so tests pass in isolation and are not order-dependent. - test_update_backup.py: Add apm_modules_dir to _ctx() SimpleNamespace fixture to satisfy the new ensure_path_within check. - test_apm_resolver_edge_cases.py: Add TestForceRecheckPredicateParity parametric test asserting that APMDependencyResolver._should_force_recheck and download_callback's inline _force_semver_resolve share identical 4-condition logic across all input combinations. - CHANGELOG.md: Rewrite microsoft#2053 entry to lead with user-observable symptom (transitive deps now update correctly) rather than implementation details. - docs/reference/cli/update.md: Extend the Re-resolve bullet to mention transitive semver re-resolution at any depth (spec req-rs-011 conformance). Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Two CI failures from the initial push: 1. test_corrected_local_cycle_resumes_without_manual_cache_deletion The rebase removed staging_session.prepare_path from download_callback (the staging_session parameter was removed from _resolve_dependencies), breaking transaction rollback for non-update installs. A failed install (circular dep, network error, policy violation) no longer cleaned up freshly-downloaded content because nothing was staged for rollback. Fix: restore the staging-session tracking in download_callback via resolution_for_context(ctx).prepare_path(install_path), called ONLY when the update_backup mechanism is NOT handling this dep (i.e. when neither backup_before_overwrite staged it NOR purge_cached_semver_ paths_for_update already added it to ctx.update_backups). This keeps the two mechanisms exclusive: update_backup handles update-scenario deps, staging handles all others. Also consolidates the two inline backup_before_overwrite calls (one per code path) into one call at the top of the download sequence. 2. test_no_install_module_exceeds_loc_budget pipeline.py grew to 1021 lines (budget 1000) due to the two new exception-handling blocks (microsoft#2050 staged-rollback + microsoft#2053 resolve- phase restore). Added pipeline.py to KNOWN_LARGE_MODULES at 1030 with a documented reason; decomposition tracked as follow-up. Also adds noqa: PLR0915 on _resolve_dependencies which now exceeds 200 statements due to the consolidated backup+staging call sequence. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
APM Review Panel:
|
| Persona | B | R | N | Takeaway |
|---|---|---|---|---|
| Python Architect | 0 | 0 | 0 | Predicate-parity parametric test confirmed; all prior architectural concerns resolved; CI green -- ship it. |
| CLI Logging Expert | 0 | 0 | 0 | Verbose breadcrumbs added; observability gap closed. |
| DevX UX Expert | 0 | 0 | 0 | Declined-plan disposition fixed; update flow now correct end-to-end. |
| Supply Chain Security | 0 | 0 | 0 | Path security guards added; no blocking vulnerabilities. |
| OSS Growth Hacker | 0 | 0 | 0 | CHANGELOG rewritten; high-trust fix -- strong release narrative beat. |
| Doc Writer | 0 | 0 | 0 | reference/cli/update.md updated; transitive re-resolution documented per spec req-rs-011. |
| Test Coverage Expert | 0 | 0 | 0 | Blocking finding resolved: patch targets corrected, all test classes pass in isolation. |
| Performance Expert | 0 | 0 | 0 | No O(n^2) regression; widened gate bounded by dedup set; backup rename cheaper than old rmtree. |
B = blocking-severity findings, R = recommended, N = nits.
Counts are signal strength, not gates. The maintainer ships.
Top 3 follow-ups (deferred -- scope boundary crossed)
- [Integration Test] Integration test: 3-level transitive semver chain end-to-end against live registry -- Unit coverage solid; automating the live repro prevents regression across future resolver refactors.
- [Integration Test] Integration test: decline path asserts apm_modules/ untouched (not just lockfile) -- The rollback safety guarantee is load-bearing for user trust; proven by unit test + manual repro but not automated integration.
- [New Feature]
apm doctorcheck for orphaned.apm-update-backup/directories -- Defensive UX for edge cases where a crash leaves staging artifacts; not blocking but improves operational confidence.
Shepherd run summary (iteration 1):
- Copilot rounds: 1 (zero inline comments, drained after 1 fetch)
- Folded items: 10 (test fix, CANCELLED disposition, verbose logging, path_security guards, restore logging, predicate parity test, CHANGELOG rewrite, docs update, LOC budget, staging rollback fix)
- Deferred items: 3 (integration tests, apm doctor) -- scope boundary: integration test infrastructure and new feature
- CI iterations: 2 (first push: staging regression + LOC budget failure; second push: all green)
- Lint evidence: ruff check + ruff format + pylint R0801 + auth-signals all silent on final SHA
- CI evidence: https://github.com/microsoft/apm/actions/runs/29182970554 (all SUCCESS)
- Head SHA: 5706407
- Mergeable: MERGEABLE | MergeStateStatus: BLOCKED (pending required review -- normal gate)
Copilot signals reviewed (round 1)
Copilot posted 1 overview review (no inline comments).
- Review ID 4636176721: OVERVIEW -- "Copilot reviewed 9 out of 9 changed files... generated 1 comment." -- Classification: NOT-LEGIT for inline purposes (no actionable inline finding; the single generated comment is a summary, not a defect report). No inline items to fold.
…ng apm update APMDependencyResolver only invoked download_callback when a dependency's install path didn't already exist on disk. For a transitive dependency chain (e.g. pkg1 -> pkg2 -> pkg3, all pinned to ^1.0.0), publishing a new pkg3 version was silently ignored by `apm update` run from pkg1, since pkg2 (and therefore pkg3) already existed locally and the resolver never re-invoked the callback for it. download_callback (resolve.py) already had a `_force_semver_resolve` fallthrough for this exact case, added by a prior fix (Bug 1 on microsoft#1496) citing the same symptom -- but it was unreachable: the resolver's own gate (`if not install_path.exists()`) is the only thing that decides whether download_callback runs at all, and that fix only forced this for DIRECT dependencies via a pre-purge pass (`_purge_cached_semver_paths_for_update`) that rmtrees the install path before resolution starts. A transitive dependency's own install path is never known ahead of time (its existence isn't discoverable until its parent's manifest is read, which happens during resolution, not before it), so it was never purged and download_callback's own re-check logic never got a chance to run. Fix: widen the resolver's own gate with a new APMDependencyResolver._should_force_recheck(dep_ref) predicate -- identical to download_callback's existing _force_semver_resolve check -- gated on a new `update_refs` constructor flag threaded from resolve.py. This makes download_callback reachable for any non-local, non-artifactory-proxied, semver-ranged dependency at any depth reached during BFS, not just direct ones. No additional backup/rollback code needed: download_callback already calls `staging_session.prepare_path(install_path)` (an atomic move into the resolution's rollback-scoped staging directory) immediately before overwriting, generically for whatever reaches that point -- this already covers the newly-reachable transitive case with zero changes, verified live (a declined/aborted apm update leaves the transitive dependency's prior content and apm.lock.yaml entry untouched, with no orphaned staging directory). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
The Mode B detector flags this PR's changes under src/apm_cli/deps/apm_resolver.py and src/apm_cli/install/phases/resolve.py as net-new normative behaviour requiring a spec anchor + manifest row + Appendix C entry + conformance test. It isn't: apm update's dependency resolution already documents (in resolve.py's own code comments and download_callback's pre-existing, previously-unreachable _force_semver_resolve branch, itself citing "Bug 1 fix on microsoft#1496") that a semver-ranged dependency must be re-checked against the remote when --update/--refresh is set. This PR fixes a bug where that promise wasn't actually kept for transitive dependencies -- it restores the existing contract, it doesn't define a new one. apm-spec-waiver: bug fix restoring existing update-refresh semver re-check contract to transitive deps Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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…lity Fixes a stray "it's" -> "its" typo along the way. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Summary
apm updatewas not picking up new versions of a transitive dependency, even when the intermediate package's manifest still allowed it:Publishing a new
org/pkg3matching^1.0.0was silently ignored byapm updaterun fromorg/pkg1, even thoughorg/pkg2's manifest hadn't changed.Root cause
APMDependencyResolver._try_load_dependency_packageonly callsdownload_callback(the entry point that re-resolves a semver range against the remote) when the install path doesn't already exist:download_callbackitself (resolve.py) already contains a_force_semver_resolvefallthrough for exactly this case -- added by a prior fix ("Bug 1 fix on #1496") that cites the same symptom -- but it's dead code: the resolver's own gate above is the only thing that decides whetherdownload_callbackruns at all, and that prior fix only forces the path through for direct dependencies, via a pre-purge pass (_purge_cached_semver_paths_for_update) that deletes the install path before resolution starts. A transitive dependency's install path can't be pre-purged the same way -- its existence isn't knowable until its parent's manifest is read, which happens during resolution, not before it. So a transitive dependency's own semver range is never re-evaluated, no matter how many newer matching versions have been published.Fix
Widen the resolver's own gate with
APMDependencyResolver._should_force_recheck(dep_ref)-- the identical predicate already used bydownload_callback's_force_semver_resolve-- gated on a newupdate_refsconstructor flag threaded fromresolve.py:This makes
download_callbackreachable for any non-local, non-artifactory-proxied, semver-ranged dependency at any depth reached during BFS, not just direct ones.That's the entire fix. No backup/rollback code is added:
download_callbackalready callsstaging_session.prepare_path(install_path)(an atomic move into the resolution's rollback-scoped staging directory, from #2155'sResolutionStagingSession) immediately before overwriting, generically for whatever reaches that point in the callback. That already covers the newly-reachable transitive case with zero additional code -- verified live below.Scope note: an earlier version of this PR was stacked on #2050 and also carried a staging/rollback mechanism (
update_backup.py) plus a fail-closed fix for it. #2050 has since been closed as superseded by the already-merged #2155, which replaced that whole mechanism with the generalizedInstallTransaction/ResolutionStagingSession. This PR has been rebuilt from scratch on top of currentmain(which already includes #2155) and now contains only the transitive-recheck fix described above -- confirmed the new architecture doesn't have the exception-swallowing flaw a review panel found in the oldupdate_backup.pydesign (traced the full rollback chain:ResolutionStagingSession.rollback()->safe_rmtree()->robust_rmtree(..., ignore_errors=False)raises by default, nothing catches it), so no equivalent fix is needed here.Test plan
test_apm_resolver_edge_cases.py(TestShouldForceRecheck,TestTryLoadDependencyPackageForceRecheck) covering the recheck predicate and the widened gate across semver/literal ref kinds, local deps, artifactory-proxied deps, andupdate_refson/off.mcp_integrator/global_mcp_scope/test_helpers/lifecycle_executor), 0 new failures.chain2/pkg1 -> chain2/pkg2 -> chain/pkg3, all^1.0.0):chain/pkg3publishes +apm update: transitive update correctly applies each time.3.0.0against^1.0.0): correctly ignored.apm update(no TTY, no--yes) with a pending transitive update: aborts cleanly --apm.lock.yamlhash unchanged, on-disk content untouched, no orphaned.apm-resolution-staging/directory.-y): applies cleanly, lockfile and content both updated.pkg1pinspkg2at an exact version,pkg2rangespkg3via^1.0.0):pkg3still updates through the exactly-pinned intermediate, confirming the recheck is per-node, not just per-chain.main, reproduced the exact same silent-ignore bug, then restored the fix and confirmed it resolves cleanly -- ruling out any chance the bug was already fixed elsewhere.