fix(git-core): apply filtered PATH to spawned git commands, fixing E2BIG - #537
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getappz merged 3 commits intoAug 18, 2026
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Included review availability: 1 review is currently available. Based on recent review activity, included reviews refill at 2 per hour. 📝 WalkthroughWalkthroughGit resolution now caches the resolved binary and a filtered, deduplicated PATH. The ChangesGit PATH handling
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🔵 Low · up to The change applies the filtered PATH to spawned Git commands and is supported by focused tests plus the full crate checks. A bounded runtime concern remains because filtering many distinct PATH entries may delay Git resolution in long-running daemons; merge is reasonable with owner awareness and follow-up. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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In `@crates/flare-git-core/src/shell.rs`:
- Around line 103-110: The PATH filtering in resolved_git should replace the
linear seen.iter().any check with a HashSet of normalized path keys, while
preserving paths_eq’s case-insensitive behavior on Windows and macOS. Update the
seen-entry tracking and insertion logic so deduplication remains equivalent but
scales linearly with the number of PATH entries.
- Around line 126-140: Update every Git child-process launch, including
run_output_timeout and snapshot::run_git_with_index, to call apply_filtered_path
on the Command before spawning. Reuse the existing shared helper and preserve
the current command arguments, timeout behavior, and output handling.
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crates/flare-git-core/src/shell.rs
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`crates/flare-git-core/src/shell.rs` already had a `resolved_git()`/`apply_filtered_path()` pair (uncommitted WIP already sitting in this worktree from an earlier dispatch) that computes a filtered/deduped PATH for resolving the `git` binary and dedupes entries so a long-running daemon that re-prepends the same PATH entry across many dispatches doesn't accumulate unbounded bloat. But `apply_filtered_path` was never actually called at either spawn site (`run_in`, `diff`) — it only set the PATH used to *locate* the git binary via `which::which_in`, never applied it to the *spawned child's own environment*. `Command::output()` inherits the full (unfiltered, potentially bloated) parent PATH by default, so a long-lived daemon process could still push a git subprocess spawn's argv+envp past `ARG_MAX`, dying with `E2BIG` — exactly the reported symptom. ## Fix Wired `apply_filtered_path(&mut cmd)` into both `run_in` and `diff` right after `no_console_window`, so every git spawn in this crate gets the same deduped PATH used to resolve the binary in the first place. ## Verification - Added `run_in_survives_a_path_bloated_by_repeated_daemon_dispatches` (unix-only): re-execs the compiled test binary fresh (bypassing the `OnceLock`-cached `resolved_git()` from other tests), inflates the child's own PATH with 200k duplicate entries to reproduce the daemon's long-running accumulation pattern, then calls `run_in`. Confirmed this test goes **red** with the exact reported error (`git not available: Argument list too long (os error 7)`) when the two `apply_filtered_path` call sites are stripped, and green with them restored. - Added `apply_filtered_path_overrides_the_spawned_command_s_path_env`: unit-level check that the function actually overrides the spawned `Command`'s PATH env with `resolved_git().filtered_path`. - Full crate suite: `cargo test -p flare-git-core --lib` — 178/178 passing. - `cargo clippy -p flare-git-core --all-targets` — clean, no new warnings. Agentflare-Agent: claude-code Agentflare-Branch: task/130-git-subprocess-spawn-hit-e2big-argument Agentflare-Item: 130
Address review feedback: use HashSet for PATH dedup at scale, and call apply_filtered_path in run_in_lines_bounded, run_output_timeout, and snapshot::run_git_with_index so every git child inherits the deduped PATH. Co-authored-by: Cursor <cursoragent@cursor.com> Agentflare-Agent: cursor Agentflare-Branch: task/130-git-subprocess-spawn-hit-e2big-argument Agentflare-Item: 130
Co-authored-by: Cursor <cursoragent@cursor.com> Agentflare-Agent: cursor Agentflare-Branch: task/130-git-subprocess-spawn-hit-e2big-argument Agentflare-Item: 130
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…le label/assignee ordering (#556) * fix: apply filtered PATH in run_in_lines_bounded; fix orphan-reconcile label/assignee ordering run_in_lines_bounded was the one git-spawn site PR #537 missed when wiring apply_filtered_path through every other call site — it can still hit E2BIG on a daemon with a PATH bloated by repeated dispatches. restore_ready_for_work added the ready-for-work label before restoring assignee_agent via two non-transactional DB calls; a failure between them reproduces item #150's bug (labeled ready-for-work, no assignee_agent). Reordered so assignee_agent is restored first. Agentflare-Agent: claude-code_2-1-234_agent Agentflare-Branch: task/514-fix-apply-filtered-path-to-run-in-lines Agentflare-Item: 514 * fix(dashboard): wrap restore_ready_for_work's label/assignee writes in one transaction CodeRabbit finding on PR #556: remove_label/update/add_label ran as three independent, non-atomic writes with errors discarded via .ok()? -- a failure partway through could leave the item in an inconsistent state (no scheduling label, or dispatched still attached) with no rollback. Wraps them in an explicit BEGIN/COMMIT/ROLLBACK. Agentflare-Agent: claude-code_2-1-235_agent Agentflare-Branch: task/514-fix-apply-filtered-path-to-run-in-lines Agentflare-Item: 514
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Root cause
crates/flare-git-core/src/shell.rsalready had aresolved_git()/apply_filtered_path()pair (uncommitted WIP already sitting in this worktree from an earlier dispatch) that computes a filtered/deduped PATH for resolving thegitbinary and dedupes entries so a long-running daemon that re-prepends the same PATH entry across many dispatches doesn't accumulate unbounded bloat. Butapply_filtered_pathwas never actually called at either spawn site (run_in,diff) — it only set the PATH used to locate the git binary viawhich::which_in, never applied it to the spawned child's own environment.Command::output()inherits the full (unfiltered, potentially bloated) parent PATH by default, so a long-lived daemon process could still push a git subprocess spawn's argv+envp pastARG_MAX, dying withE2BIG— exactly the reported symptom.Fix
Wired
apply_filtered_path(&mut cmd)into bothrun_inanddiffright afterno_console_window, so every git spawn in this crate gets the same deduped PATH used to resolve the binary in the first place.Verification
run_in_survives_a_path_bloated_by_repeated_daemon_dispatches(unix-only): re-execs the compiled test binary fresh (bypassing theOnceLock-cachedresolved_git()from other tests), inflates the child's own PATH with 200k duplicate entries to reproduce the daemon's long-running accumulation pattern, then callsrun_in. Confirmed this test goes red with the exact reported error (git not available: Argument list too long (os error 7)) when the twoapply_filtered_pathcall sites are stripped, and green with them restored.apply_filtered_path_overrides_the_spawned_command_s_path_env: unit-level check that the function actually overrides the spawnedCommand's PATH env withresolved_git().filtered_path.cargo test -p flare-git-core --lib— 178/178 passing.cargo clippy -p flare-git-core --all-targets— clean, no new warnings.Opened by
claude-codeon flared:51bb8de6c33b for item #130 via agentflare.Summary by CodeRabbit