fix(drivers): load a driver from the location the failing runtime named, and make installs concurrency-safe

[anandgupta42]

Issue for this PR

Closes #1200
Closes #1202
Closes #1207

Two commits, both in resolve.ts, both blocking the same rig. They are kept in one PR deliberately: a fourth PR would make the stack four deep on someone else's root (see below), and the diffs are small enough to read together.

Stack warning — please read before merging anything in this chain.
fix/driver-load-cwd-prefix (#1201) → fix/native-driver-resolution (#1192) → fix/warehouse-driver-bootstrap (#1122) → main.

That is three deep, and the root (#1122) is @sahrizvi's, not mine. If #1122 is rebased, force-pushed, or squash-merged, both #1192 and this PR need rebasing, and a squash-merge of #1122 will make #1192's diff misread. I did not want to restructure someone else's PR to suit mine, so I am flagging it rather than acting on it.

This change genuinely depends on #1122 — it modifies resolve.ts, which #1122 creates; on main today the code path does not exist. But it is small, and folding it into #1192 would take the stack from three deep to two. I have no attachment to it being its own PR. That call belongs to whoever is driving #1192, or to Anand.

Type of change

• Bug fix
• New feature
• Refactor / code improvement
• Documentation

What does this PR do?

The bug. A globally installed CLI (npm install -g, package tree under /usr/lib/node_modules/altimate-code) run from an unrelated working directory could not load any warehouse driver — 8 of 8 trials on a cold VM, against a build that already contained #1122 and #1192:

DuckDB driver found at duckdb but failed to load: ENOENT: no such file or directory,
open '<cwd>/usr/lib/node_modules/altimate-code/node_modules/duckdb/package.json'

The file exists at that path without the <cwd> prefix. Ambient resolution concatenated the working directory onto an already-absolute path. We cannot change that runtime behaviour — but it names the correct location in the error, and that is better evidence of where the package lives than anything we can infer.

searchRootsFromError() now mines the absolute paths an ambient failure quotes, repairs a concatenated working directory, and searches the enclosing node_modules ahead of the inferred roots. repairCwdPrefixedPath() is deliberately conservative — it fires only when the named path is absent, is genuinely prefixed by the working directory, and the de-prefixed remainder exists on disk. That last condition is what keeps a legitimately nested <cwd>/node_modules/… from being mangled, and it means a nonsense path contributes nothing.

The message was the second half of the bug. found at duckdb is loadFailure(driver, specifier, …) echoing the bare specifier, not a path the resolver returned. It reads as "we found it and it would not load" for a package that was never located at all — which is why this was first diagnosed as a load-path bug rather than a search-coverage one. It also routes around the good DriverNotInstalledError text #1192 added, because an ENOENT-shaped ambient error sets ambientBroken and takes the other branch.

Both sites that produced that wording now say what actually happened: the default module resolution failed, here is where we looked, and — when there was one — here is the on-disk copy we also tried. loadFailure is kept for the case where we do have a real path.

I preserved #1122's deliberate choice to lead with the ambient error when both copies are broken ("it is the copy the runtime would normally pick"); only the claim that the specifier is a location is gone.

Second commit — concurrent installs corrupt each other (#1202). The managed driver directory is shared by every CLI process on the machine, and installsInFlight is a module-level Map, so it serialises installs within one process and cannot see any other. Eight CLIs starting together each ran npm install --save over the same tree:

npm install failed (exit 217) … ENOTEMPTY …
  rmdir /root/.local/share/altimate-code/drivers/node_modules/duckdb/…

This is not benchmark-specific — two terminals, a CI matrix on one runner, or an editor integration beside a shell session all hit it, and the visible result is a driver reporting itself broken on a machine where nothing is wrong.

withInstallLock takes a cross-process lock before mutating. mkdir is atomic and fails EEXIST when the directory exists on both POSIX and Windows, which makes a lock directory the portable primitive here; it lives beside the install directory so npm never treats it as stray package content. After acquiring, readiness is re-checked — the peer that held the lock has usually just installed the thing everyone queued for, so most contenders return "already present" instead of running a second npm. Stale locks are broken two ways because neither alone suffices: a dead owner (only meaningful on the same host) and age (the only signal for a lock left by another host sharing a home directory). On timeout the install proceeds unlocked rather than failing — a racing install is recoverable and the readiness check afterwards is authoritative, whereas refusing to install because a peer is slow turns contention into a hard error.

Also: diagnostics on load failures. Two separate investigations have now diagnosed a driver-load failure from the error text alone and got it wrong, because the text named a path without saying what the process's own view of the filesystem was. Load failures now carry cwd, execPath, and an explicit note when a named path does not exist but its de-prefixed form does.

How did you verify your code works?

In the shape it occurs in, not in unit tests alone.

A probe compiled with the production Bun.build options from script/build.ts (external driver packages, autoloadPackageJson: true), laid out as a real global install — <prefix>/lib/node_modules/altimate-code/bin/altimate with a real npm install duckdb into the package (not a hand-built tree; my first synthetic attempt was missing @mapbox/node-pre-gyp and failed for an unrelated reason) — run from an unrelated cwd with no NODE_PATH and no ALTIMATE_BIN_DIR:

--- BASELINE (#1122 + #1192, unmodified) ---
loadDriver: FAILED DuckDB driver found at duckdb but failed to load: ENOENT: no such file
or directory, open '<cwd><abs>/global-prefix/lib/node_modules/altimate-code/node_modules/duckdb/package.json'

--- WITH FIX ---
loadDriver: OK, Database is function

8 fresh processes with the fix: 8/8 load the driver, matching the rig's 8/8 failures.

A green bun test --cwd packages/drivers is not evidence about resolution behaviour, and I did not treat it as such. That run has the drivers package's own node_modules reachable throughout, so a bare import("duckdb") succeeds there no matter what the resolver does — my first baseline attempt passed for exactly that reason and was worthless. Only a compiled binary (bunfs) removes that path and lets the baseline fail honestly. A colleague independently hit the same trap on a 140-pass run, so it is worth stating plainly rather than leaving a reviewer to wonder. Every resolution claim above comes from a compiled binary, never from bun in-tree.

Two things I found while reproducing, which correct the framing of the original report:

• A faithful global-install layout on its own does not reproduce it. With the binary inside the package tree, the execPath walk-up finds the driver and everything works — I verified that end to end, including a real query returning a row. The trigger is an ENOENT-shaped ambient error combined with a binary outside the tree. So "global npm install" is not by itself the missing coverage; the ENOENT shape is.
• found at duckdb was read as "resolution succeeded, loading re-anchored to cwd". It is not — nothing had been found, and the reported ENOENT is the ambient attempt, which we surface even after trying a different path. The wording caused the misdiagnosis.

Gate	Result
bun run typecheck	13/13 successful
analyze.ts --markers --base origin/main --strict	ok — all custom code properly marked
bun run lint	5903 warnings, 1 error — byte-identical to main's own baseline; the error is the known pre-existing consistent-return in packages/http-recorder/test/record-replay.test.ts
packages/drivers full suite	273 pass, 0 fail
packages/opencode test/altimate	4226 pass, 0 fail (151 files)
bun run typecheck (forced, no cache)	13/13 successful

Eight new tests against real directories on disk, because the whole mechanism is path existence. They cover the repair (fires; declines when the path exists; declines on a legitimately nested path; declines when the remainder is absent), the harvesting, the end-to-end load from a harvested root, and the message no longer claiming found at duckdb.

Concurrency (#1202), verified with real processes. The exclusion claim is about separate processes, so the test spawns four and asserts their critical sections never interleave. The control confirms the test actually bites — the same four processes without the lock interleave completely:

enter 1     enter 3     enter 0     enter 2     exit 0     exit 1     exit 2     exit 3

which the assertion rejects on the second enter. 10/10 repeat runs green. The other four tests cover the unlocked-on-timeout path, both stale-lock signals, and release on throw.

A flaky test you may see, which is not mine. test/altimate/tools/sample-setup.test.ts intermittently fails 1–3 of its 8 tests at exactly 5000ms. Its execFile probe for the dbt runtime uses a 5000ms timeout and the test's own timeout is also 5000ms, so under machine load it races itself. It fails the same way on this branch with my commits stashed, sample_setup touches none of the code I changed, and it passes 8/8 on an idle machine. Pre-existing, worth its own fix, not this PR.

Windows shapes and the multi-peer wait (review round 3). Three gaps, each pinned by a test that fails with its own fix reverted — 1 of 10 for each Windows shape, 1 of 14 for the wait:

• installLockPath special-cased the POSIX and drive-letter roots but not a UNC share root, so \\server\share became \\server\share.lock — a different network share, meaning two processes installing into the share would not share a lock at all.
• The path-harvesting regex accepted POSIX and drive-letter absolutes only, so a Windows error quoting \\server\share\node_modules\duckdb\package.json yielded no roots and a driver on a share stayed unfindable despite the error naming its exact location. The pattern is now the named export quotedAbsolutePaths, testable from any platform.
• The lock budget was per wait, so it only ever outlasted one holder; with three or more contenders the last one's deadline expired mid-install and it fell through to an unlocked performInstall. It is now per holder, with a bounded number of extensions.

The chdir arm was hardened after review, and the reason generalises. It originally asked for duckdb — which the repo's own packages/drivers/node_modules satisfies through the execPath and module-location roots regardless of what the resolver does, and which no environment isolation can suppress. It would have passed while proving nothing. It now uses specifiers that exist nowhere but the tree each test builds and asserts on an export marker, so a pass establishes which root satisfied the load rather than that something, somewhere, was found.

Not verified by me:

• Windows, on Windows. The lock-path and harvesting logic now cover POSIX, drive-letter and UNC shapes and are unit-tested for all three, but every one of those tests ran on macOS. They are string-level assertions that do not touch the filesystem, which is what makes them meaningful off-platform — and also what stops them proving anything about real UNC I/O.
• The exact runtime conditions that make ambient resolution emit ENOENT rather than ERR_MODULE_NOT_FOUND. On my machine the compiled binary reports the latter; I reproduced the ENOENT path by injecting it through the importer parameter loadOptionalDriver already exposes for testing. The fix does not depend on knowing the trigger — it keys on the error naming a repairable path — but that half is inference, not observation.
• Whether any other call site depends on the old found at <specifier> wording. I grepped and found none, but string matching on error text is easy to miss.
• I could not reproduce the originally reported failure on a Linux VM, and want that on the record. On a fresh Debian 12 GCE instance I built the exact reported shape — npm install -g tree at /usr/lib/node_modules/altimate-code, a real npm install duckdb beside it, the manifest declaring duckdb, run as root from an unrelated cwd, compiled binary with production options — and every load strategy succeeded: bare-specifier ambient import failed as expected, but import(file://abs), createRequire(abs), a cwd-anchored createRequire, and the real loadOptionalDriver all returned a working Database. So Bun is not re-anchoring absolute paths in that configuration, and the remaining difference between that VM and the rig is not yet identified. The fix in the first commit is still correct and still removes a real failure mode; I just cannot claim it closes the rig's specific case, and the new diagnostics exist so the next occurrence answers the question instead of costing another round trip.

Screenshots / recordings

Not a UI change.

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR

---

Note

High Risk
Changes core driver resolution, load semantics, and shared install directory locking; workspace exclusion and argv mutation affect security-sensitive credential boundaries and global process state.

Overview
Fixes warehouse driver loading when ambient resolution fails with cwd-prefixed absolute paths (e.g. global CLI run from another directory) and when concurrent installs corrupt the managed driver tree.

Resolution and load path: After a failed ambient import, the resolver now mines quoted absolute paths from the error (searchRootsFromError), repairs <cwd> + absolute path concatenation (repairCwdPrefixedPath), walks all enclosing node_modules roots, and appends those roots after managed/trusted search roots so stale copies do not win. Workspace node_modules (including nested and symlinked targets) are never harvested, preserving the permission boundary. Loads use createRequire anchored at the resolved file plus temporary process.argv neutralization so @mapbox/node-pre-gyp does not misread --dir as --directory. safeCwd() replaces process.cwd() where a deleted cwd would mask the real failure; load errors add cwd/execPath and cwd-prefix hints.

Install concurrency: withInstallLock serializes cross-process npm install into the shared driver directory via an atomic held lock file with UUID tokens, stale recovery (rename + token checks), per-holder wait budgets, and unlocked fallback on timeout. warehouse_install_driver now requests permission for the lock container (installLockPath) alongside the driver dir.

^{Reviewed by Cursor Bugbot for commit 9a930e3. Bugbot is set up for automated code reviews on this repo. Configure here.}

Summary by CodeRabbit

• Bug Fixes

  • Improved optional warehouse driver discovery when paths are malformed or working-directory information is unavailable.
  • Prevented driver resolution from depending on the current working directory.
  • Enhanced diagnostics and path handling across POSIX, Windows drive, and UNC formats.
  • Ensured drivers load relative to their resolved installation location.
  • Prevented concurrent installations from interfering through cross-process locking.
  • Improved recovery for stale and handed-off installation locks while preserving active locks.
  • Strengthened workspace boundary handling, including symlinked paths.

• Permissions

  • Installation approval now includes the directory used for coordination locks.

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📝 Walkthrough

Walkthrough

Changes

The driver resolver now recovers package paths from runtime errors, supports POSIX, drive-letter, and UNC paths, and remains functional when the cwd changes or becomes unavailable. Driver installation now uses cross-process locks with stale recovery, handover tracking, timeout fallback, and explicit lock-directory permissions.

Changes

Driver resolution and installation

Layer / File(s)	Summary
Resolution recovery and loading packages/drivers/src/resolve.ts, packages/drivers/test/resolve-cwd-prefix.test.ts, packages/drivers/test/resolve-chdir.test.ts, packages/drivers/test/resolve-windows-shapes.test.ts, packages/drivers/test/resolve-argv-isolation.test.ts	The resolver repairs cwd-prefixed paths, harvests eligible node_modules roots, preserves managed-install precedence, loads from resolved locations, isolates process.argv, and reports diagnostics without requiring a valid cwd.
Cross-process install locking packages/drivers/src/resolve.ts, packages/drivers/test/install-lock.test.ts, packages/drivers/test/resolve-windows-shapes.test.ts	Install locks preserve filesystem roots, track owner handovers, renew wait deadlines, recover stale locks, bound timeout fallback, and protect successor locks during release.
Lock-directory permission wiring packages/opencode/src/altimate/tools/warehouse-install-driver.ts, packages/opencode/test/altimate/warehouse-install-driver-permission.test.ts	Permission requests include the derived lock directory in patterns, always-approved paths, and metadata.

Estimated code review effort: 4 (Complex) | ~60 minutes

Merge Risk: 🟡 Moderate · up to 59a98

This PR improves driver discovery and normally serializes shared installs, but timeout or lock-acquisition failures can still permit concurrent writes to the managed driver directory, leaving drivers incomplete or unusable. An open path-containment concern and a concurrency-test reliability issue also require explicit follow-up before merge.

Sequence Diagram(s)

sequenceDiagram
  participant CLIProcess
  participant DriverResolver
  participant withInstallLock
  participant LockDirectory
  CLIProcess->>DriverResolver: resolve and load optional driver
  DriverResolver-->>CLIProcess: return package or diagnostics
  CLIProcess->>withInstallLock: request install lock
  withInstallLock->>LockDirectory: create or inspect lock
  LockDirectory-->>withInstallLock: return ownership or handover state
  withInstallLock->>CLIProcess: re-check readiness and install
  withInstallLock->>LockDirectory: release matching lock

Loading

Estimated code review effort: 4 (Complex) | ~60 minutes

Poem

A rabbit checks each driver path
Cwd errors fade from sight
Locks trade tokens, one by one
Stale holders leave at night
Permission paths now guard the site

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Linked Issues check	⚠️ Warning	The changes address #1200 and #1207 with path harvesting, corrected diagnostics, safe cwd handling, and related tests. They also implement the requested #1202 lock and readiness behavior, but the auth…	Resolve the documented lock-correctness concerns, especially stale-claim races and detached install-process handling. Use a locking design that guarantees cross-process mutual exclusion, then rerun the contention and recovery tests before m…
Docstring Coverage	⚠️ Warning	Docstring coverage is 76.92% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 39 functions across 8 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the two primary changes: loading drivers from runtime-reported locations and making installs concurrency-safe.
Description check	✅ Passed	The description includes the required issue references, change type, implementation details, verification results, UI note, and completed checklist.
Out of Scope Changes check	✅ Passed	The implementation, permission changes, diagnostics, argv isolation, and tests support the linked driver-resolution and concurrent-install objectives. No unrelated code changes are evident.

Full details: Linked Issues check

Explanation

The changes address #1200 and #1207 with path harvesting, corrected diagnostics, safe cwd handling, and related tests. They also implement the requested #1202 lock and readiness behavior, but the author reports unresolved stale-claim and mutual-exclusion concerns and states that the current lock is not a proof of exclusion.

Resolution

Resolve the documented lock-correctness concerns, especially stale-claim races and detached install-process handling. Use a locking design that guarantees cross-process mutual exclusion, then rerun the contention and recovery tests before merging.

✨ Finishing Touches 💡 1

📝 Generate docstrings 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/driver-load-cwd-prefix

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            2 sessions behind this PR             

builder · claude-opus-5.........130,807,728 tokens
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session	id	scope	turns	time	tokens in / out	cached
builder	a8d09870	turns 200–535 of 619	336	23h 08m	672 / 18k	97%
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                    AIRECEIPTS                    
 “Fix the `warehouse_test` tool failing on loca…” 
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pre-edit: 10% of tokens (35/179 turns)
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Code Review Summary

Status: 1 Issue Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	1
SUGGESTION	0

Issue Details (click to expand)

WARNING

File	Line	Issue
packages/drivers/src/resolve.ts	1408	linkSync restore requires hard-link support, absent on FAT/exFAT and some SMB/UNC shares

Files Reviewed (4 files)

• packages/drivers/src/resolve.ts - 1 issue
• packages/drivers/test/install-lock.test.ts
• packages/drivers/test/resolve-chdir.test.ts
• packages/drivers/test/resolve-windows-shapes.test.ts

Fix these issues in Kilo Cloud

Previous Review Summaries (11 snapshots, latest commit 2e50c99)

Current summary above is authoritative. Previous snapshots are kept for context only.

Previous review (commit 2e50c99)

Status: No Issues Found | Recommendation: Merge

Files Reviewed (6 files)

• packages/drivers/src/resolve.ts
• packages/drivers/test/install-lock.test.ts
• packages/drivers/test/resolve-argv-isolation.test.ts
• packages/drivers/test/resolve-chdir.test.ts
• packages/drivers/test/resolve-unit.test.ts
• packages/drivers/test/resolve-windows-shapes.test.ts

Previous review (commit 59a9874)

Status: No Issues Found | Recommendation: Merge

Files Reviewed (2 files)

• packages/drivers/src/resolve.ts
• packages/drivers/test/resolve-argv-isolation.test.ts

Previous review (commit 6ba55f3)

Status: 1 Issue Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	0
SUGGESTION	1

Issue Details (click to expand)

SUGGESTION

File	Line	Issue
packages/drivers/src/resolve.ts	496	loadOptionalDriver's JSDoc is detached from its declaration by the newly inserted requireFromLocation/isRequireOfEsm/loadFromLocation helpers

Files Reviewed (2 files)

• packages/drivers/src/resolve.ts - 1 issue
• packages/drivers/test/resolve-chdir.test.ts

Fix these issues in Kilo Cloud

Previous review (commit cd25034)

Status: 1 Issue Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	0
SUGGESTION	1

Issue Details (click to expand)

SUGGESTION

File	Line	Issue
packages/drivers/src/resolve.ts	310	searchRootsFromError JSDoc orphaned by the inserted quotedAbsolutePaths

Files Reviewed (4 files)

• packages/drivers/src/resolve.ts - 1 issue
• packages/drivers/test/install-lock.test.ts
• packages/drivers/test/resolve-chdir.test.ts
• packages/drivers/test/resolve-windows-shapes.test.ts

Fix these issues in Kilo Cloud

Previous review (commit 8e4cdc2)

Status: No Issues Found | Recommendation: Merge

Files Reviewed (1 file)

• packages/drivers/test/resolve-chdir.test.ts

Previous review (commit 836faa7)

Status: 1 Issue Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	1
SUGGESTION	0

Issue Details (click to expand)

WARNING

File	Line	Issue
packages/drivers/src/resolve.ts	1195	releaseInstallLock's inode-based ownership check relies on st_ino uniqueness, which is unverified on Windows/overlay filesystems

Files Reviewed (3 files)

• packages/drivers/src/resolve.ts - 1 issue
• packages/drivers/test/install-lock.test.ts - 0 issues
• packages/drivers/test/resolve-cwd-prefix.test.ts - 0 issues

Fix these issues in Kilo Cloud

Previous review (commit 53a196d)

Status: 1 Issue Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	1
SUGGESTION	0

Issue Details (click to expand)

WARNING

File	Line	Issue
packages/drivers/src/resolve.ts	1184	releaseInstallLock's inode-based ownership check relies on st_ino uniqueness, which is unverified on Windows/overlay filesystems

Files Reviewed (3 files)

• packages/drivers/src/resolve.ts - 1 issue
• packages/drivers/test/install-lock.test.ts - 0 issues
• packages/drivers/test/resolve-cwd-prefix.test.ts - 0 issues

Fix these issues in Kilo Cloud

Previous review (commit d13f070)

Status: 2 Issues Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	1
SUGGESTION	1

Issue Details (click to expand)

WARNING

File	Line	Issue
packages/drivers/src/resolve.ts	1129	claimStaleLock is not atomic with the isStaleLock check, so its rename can steal a lock that was released and re-acquired in between

SUGGESTION

File	Line	Issue
packages/drivers/src/resolve.ts	1023	Liveness-only staleness never breaks a lock whose dead owner's pid was recycled, so every later install stalls the full timeout and runs unlocked

Files Reviewed (5 files)

• packages/drivers/src/resolve.ts - 2 issues
• packages/drivers/test/install-lock.test.ts - 0 issues
• packages/drivers/test/resolve-cwd-prefix.test.ts - 0 issues
• packages/opencode/src/altimate/tools/warehouse-install-driver.ts - 0 issues
• packages/opencode/test/altimate/warehouse-install-driver-permission.test.ts - 0 issues

Fix these issues in Kilo Cloud

Previous review (commit 16ac5e5)

Status: 5 Issues Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	4
SUGGESTION	1

Issue Details (click to expand)

WARNING

File	Line	Issue
packages/drivers/src/resolve.ts	949	Cross-process install lock silently degrades to unlocked when its parent directory doesn't exist (cold start / standalone), so concurrent first-time installs still race
packages/drivers/src/resolve.ts	918	Age-based staleness check breaks the lock while a live same-host owner is still installing (decoupled from the npm timeout)
packages/drivers/src/resolve.ts	378	searchRootsFromError reintroduces project/ancestor node_modules into the search path without the permission-boundary exclusion driverSearchRoots deliberately enforces
packages/drivers/src/resolve.ts	197	Path regex and path.sep-based node_modules marker disagree on separators, so Windows path harvesting/repair is likely broken (untested per PR)

SUGGESTION

File	Line	Issue
packages/drivers/src/resolve.ts	487	Searched N location(s) formatting duplicated with DriverNotInstalledError

Files Reviewed (3 files)

• packages/drivers/src/resolve.ts - 5 issues
• packages/drivers/test/install-lock.test.ts - 0 issues
• packages/drivers/test/resolve-cwd-prefix.test.ts - 0 issues

Fix these issues in Kilo Cloud

Previous review (commit 4f0abf3)

Status: 5 Issues Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	4
SUGGESTION	1

Issue Details (click to expand)

WARNING

File	Line	Issue
packages/drivers/src/resolve.ts	957	Cross-process install lock silently degrades to unlocked when its parent directory doesn't exist (cold start / standalone), so concurrent first-time installs still race
packages/drivers/src/resolve.ts	926	Age-based staleness check breaks the lock while a live same-host owner is still installing (decoupled from the npm timeout)
packages/drivers/src/resolve.ts	386	searchRootsFromError reintroduces project/ancestor node_modules into the search path without the permission-boundary exclusion driverSearchRoots deliberately enforces
packages/drivers/src/resolve.ts	205	Path regex and path.sep-based node_modules marker disagree on separators, so Windows path harvesting/repair is likely broken (untested per PR)

SUGGESTION

File	Line	Issue
packages/drivers/src/resolve.ts	494	Searched N location(s) formatting duplicated with DriverNotInstalledError

Files Reviewed (2 files)

• packages/drivers/src/resolve.ts - 5 issues
• packages/drivers/test/install-lock.test.ts - 0 issues

Fix these issues in Kilo Cloud

Previous review (commit e56cd6b)

Status: 3 Issues Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	2
SUGGESTION	1

Issue Details (click to expand)

WARNING

File	Line	Issue
packages/drivers/src/resolve.ts	386	searchRootsFromError reintroduces project/ancestor node_modules into the search path without the permission-boundary exclusion driverSearchRoots deliberately enforces
packages/drivers/src/resolve.ts	205	Path regex and path.sep-based node_modules marker disagree on separators, so Windows path harvesting/repair is likely broken (untested per PR)

SUGGESTION

File	Line	Issue
packages/drivers/src/resolve.ts	468	Searched N location(s) formatting duplicated with DriverNotInstalledError

Files Reviewed (2 files)

• packages/drivers/src/resolve.ts - 3 issues
• packages/drivers/test/resolve-cwd-prefix.test.ts - 0 issues

Fix these issues in Kilo Cloud

---

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_{Review guidance: REVIEW.md from base branch main}

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[anandgupta42]

Rebased onto main and retargeted — force-push explained.

The stack this PR sat on was collapsed by squash-merges, so the base had to move. What happened, in order:

• fix(drivers): resolve warehouse SDKs from disk instead of reporting them missing #1122 was squash-merged into main at 07:33:38Z as f096d8c. That commit has a single parent, and fix(drivers): resolve warehouse SDKs from disk instead of reporting them missing #1122's own head c49149a is not an ancestor of main — its 13 commits exist on main only as that one squashed commit.
• fix(drivers): name a location when the missing-driver error searched nothing #1192 was squash-merged 43 seconds later, at 07:34:21Z — but into fix/warehouse-driver-bootstrap, not into main. Its merge commit e005323 has the single parent c49149a.

Leaving this PR based on fix/native-driver-resolution would have made its diff re-include ~18 commits' worth of content that main already holds as a squash commit, so the PR would have misread entirely.

What I did: git rebase --onto origin/main 212f4546 fix/driver-load-cwd-prefix — replaying only this PR's own two commits — then force-pushed with --force-with-lease and retargeted the base to main.

4f0abf327f → 16ac5e5e03. Nothing was squashed, dropped, or amended in content.

Verification that the rebase is faithful. I diffed the pre-rebase patch (212f4546...4f0abf32) against the post-rebase patch (origin/main...16ac5e5e03). Ignoring blob hashes and hunk headers, they are byte-identical. The only change is that hunk offsets shift by exactly 8 lines, which is precisely the net size of #1192's hunk that is absent from main. GitHub now computes the same 3 files / +558 / −6 as before the rebase, and both commits survive:

• bdc68a4 — the load fix (Globally installed CLI cannot load a driver that is present: ambient resolution prefixes cwd onto an absolute path #1200)
• 16ac5e5 — the concurrency fix (Concurrent CLI processes corrupt each other's on-demand driver installs (ENOTEMPTY) #1202)

Neither commit is redundant against merged main. I checked rather than assumed: searchRootsFromError, repairCwdPrefixedPath, withInstallLock, ambientLoadFailure and loadDiagnostics all have zero occurrences in main's resolve.ts, and installsInFlight is still a module-level Map there (line 726) — so the cross-process install race in #1202 is live on main today.

---

⚠️ Separate finding for whoever owns #1192 — its fix is currently orphaned and not on main.

Because #1192 merged into fix/warehouse-driver-bootstrap rather than main, and #1122 (the only PR from that branch to main) had already merged 43 seconds earlier, #1192's change never reached main. Concretely, main's DriverNotInstalledError still emits the bare Searched 0 locations: message that #1192 fixed. The improved text lives only on fix/warehouse-driver-bootstrap, which has no open PR.

This is not something I should fix from inside this PR, and I deliberately did not fold #1192's commit into this branch — that would put someone else's already-merged work into my diff. It needs its own PR to main. Flagging it rather than acting on it.

It is also why packages/drivers reports 236 pass here instead of the 238 in the description: the two missing tests are #1192's own, and they are not on main. Not a regression.

Gates, re-run on the rebased branch:

Gate	Result
bun run typecheck	13/13 successful
analyze.ts --markers --base origin/main --strict	ok — no upstream-shared files modified
bun run lint	5903 warnings, 1 error — identical to main's own baseline, measured by checking out main and re-running. The error is the known pre-existing consistent-return in packages/http-recorder/test/record-replay.test.ts. The 7 resolve.ts diagnostics are present on main too, merely shifted.
packages/drivers	236 pass, 0 fail
packages/opencode test/altimate	4226 pass, 0 fail (151 files)

The pre-rebase head is preserved at backup/1201-pre-rebase (4f0abf327f53a67bd0cd22ed15adb549793f5ad2) if anyone needs to diff against it; I will delete that branch once this lands.

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Inline comments:
In `@packages/drivers/src/resolve.ts`:
- Around line 1128-1131: Update the stale-lock branch in withInstallLock so it
checks the retry deadline after claimStaleLock and sleeps before continuing,
matching the normal retry path. Preserve the existing stale-claim behavior while
ensuring repeated rename failures remain bounded by the deadline and yield
between attempts.
- Around line 1071-1076: Update withInstallLock and releaseInstallLock so lock
ownership is validated by the lock directory identity captured immediately after
acquisition, not only by owner.json.token. Pass the captured directory inode or
equivalent identity into releaseInstallLock and refuse removal when the current
lock directory identity differs; retain token validation for matching
directories and handle unreadable owner files without deleting a replaced peer
lock.
- Around line 246-251: Update isWorkspaceRoot to resolve the root, scope.cwd,
and scope.ancestors through realpathSync before performing containment checks,
while retaining the existing lexical-path behavior as a fallback whenever
realpathSync fails. Ensure resolveOptionalPackage continues excluding symlinked
node_modules roots outside the workspace.

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⚠️ Outside diff range comments (1)

packages/drivers/src/resolve.ts (1)

275-275: 🔒 Security & Privacy | 🟠 Major | ⚡ Quick win

Path Traversal (CWE-59)

Reachability: External · Exploitability: Moderate

Reject workspace-controlled roots by both lexical and real paths.

searchRootsFromError can harvest <cwd>/node_modules/... when that directory is a symlink to an external package. isWorkspaceRoot resolves only the symlink target, so the root bypasses the workspace exclusion and resolveOptionalPackage can load attacker-controlled driver code. Track both representations and reject either one when it belongs to the workspace. Add a regression test for this symlink and error-path case.

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In `@packages/drivers/src/resolve.ts` at line 275, Update searchRootsFromError and
isWorkspaceRoot so each candidate root is checked in both lexical and real-path
forms, rejecting it if either representation belongs to the workspace before
resolveOptionalPackage loads a driver. Add a regression test covering a
workspace node_modules symlink to an external package discovered through an
error path.

Source: Coding guidelines

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Inline comments:
In `@packages/drivers/test/install-lock.test.ts`:
- Around line 161-163: Update the multi-process setup around the Bun.spawn calls
so each child signals readiness, the parent waits until all three are ready, and
then releases them together before invoking withInstallLock. Reuse the existing
readiness-barrier pattern from the earlier multi-process test, preserving the
current three-child handover and deadline-renewal assertions.

---

Outside diff comments:
In `@packages/drivers/src/resolve.ts`:
- Line 275: Update searchRootsFromError and isWorkspaceRoot so each candidate
root is checked in both lexical and real-path forms, rejecting it if either
representation belongs to the workspace before resolveOptionalPackage loads a
driver. Add a regression test covering a workspace node_modules symlink to an
external package discovered through an error path.

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Actionable comments posted: 1

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Inline comments:
In `@packages/drivers/test/resolve-argv-isolation.test.ts`:
- Line 68: Update all three tests in the relevant test suite to use test.serial,
ensuring process.argv, shared fixture variables, and afterEach cleanup cannot
overlap between tests.

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altimate-code/packages/drivers/test/resolve-unit.test.ts

Lines 941 to 942 in 2e50c99

	const result = await _testing.killTree(child, { termGraceMs: 25, totalTimeoutMs: 2_000, pollMs: 5 })
	expect(result.verified).toBe(true)

Avoid depending on prompt orphan reaping in this test

On Linux containers whose PID 1 does not promptly reap orphaned descendants, the background process remains as a zombie after the group is killed, so process.kill(-pid, 0) continues reporting the group as observable until this two-second deadline expires and result.verified is false. The focused test fails consistently in this environment even though no process can continue mutating files; arrange for the fixture's descendants to be reaped or assert termination without relying on process-group disappearance.

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Recognize mixed-separator UNC roots

When ALTIMATE_DRIVER_DIR uses a valid mixed-separator UNC root such as \\server/share/, none of these root patterns match and installLockPath() returns \\server/share.lock, which addresses a different share rather than a lock inside share. Lock creation can then fail and installers proceed unlocked against the original target. Fresh evidence beyond the prior UNC spelling threads is this mixed form, which Node's Windows path handling normalizes as the same UNC share root; accept either separator between every UNC component.

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[chatgpt-codex-connector]

Fix containment for names beginning with two dots

When a harvested root is a real descendant of the working directory through a component such as ..evil/node_modules, path.relative() returns ..evil/node_modules and this prefix check mistakes it for parent traversal. searchRootsFromError() consequently accepts that workspace-controlled root and can execute its driver while warehouse credentials are available. Fresh evidence beyond the prior workspace-exclusion threads is that this bypass uses an actual child rather than an ancestor or nested dependency; only treat .. itself or ..${path.sep} as traversal.

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altimate-code/packages/drivers/test/resolve-unit.test.ts

Line 942 in 9a930e3

expect(result.verified).toBe(true)

Avoid requiring orphaned process groups to disappear

On containerized Linux runners whose PID 1 does not promptly reap orphaned children, the background shell and sleep become zombies after killTree sends SIGKILL, and process.kill(-pid, 0) continues reporting their process group as observable. Consequently killTree returns { verified: false } at the deadline and this assertion fails deterministically (and leaves defunct children), even though no descendant can still perform work; structure the fixture so its descendants are reaped or test escalation through injected liveness hooks instead of requiring the real process group to vanish.

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Respect remote holders' declared lock budgets

When two hosts share the managed driver directory and the holder is running an install configured to last longer than staleAfterMs (five minutes by default), this branch ignores the holder's published budgetMs and declares the lock stale solely from its age. A contender can then claim the lock and start npm while the remote holder is still legitimately mutating the same tree; apply the bounded declared budget to remote holders as well, since only PID liveness—not the advertised lifetime—is host-local.

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[chatgpt-codex-connector]

Preserve non-delimiting quotes in harvested paths

When the runtime quotes a valid POSIX path containing another quote character, such as open '/opt/A"B/node_modules/duckdb/package.json', this character class terminates at the embedded " even though the path is delimited by single quotes. The function therefore returns /opt/A, finds no enclosing node_modules, and the new recovery still reports the installed driver as unavailable; capture the opening delimiter and exclude only its matching closer so other quote characters remain part of the path.

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[kilo-code-bot]

WARNING: linkSync restore depends on hard-link support, which FAT/exFAT and some SMB/UNC shares lack

The stale-claim restore uses link(2) (chosen over rename so a third process's lock is never silently clobbered) to put a wrongly-moved live lock back at lockPath. But link only works where the filesystem supports hard links. ALTIMATE_DRIVER_DIR can point at a UNC share (explicitly supported by this PR) or FAT/exFAT media, where linkSync throws EPERM/ENOTSUP rather than EEXIST. That non-EEXIST error is swallowed by the catch, and the following rmSync(claimed) then deletes the live lock that was just moved, admitting a second concurrent npm install over the same tree — the exact corruption this lock exists to prevent. copyFileSync with COPYFILE_EXCL keeps the fail-closed-on-EEXIST behaviour while working on every filesystem:

Suggested change

	fs.linkSync(claimed, lockPath)
	fs.copyFileSync(claimed, lockPath, fs.constants.COPYFILE_EXCL)

---

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