From 215566bcb6acbc698849d78b8a20eec62cb2fa59 Mon Sep 17 00:00:00 2001
From: Mohamed Boudra <boudra.moha@gmail.com>
Date: Thu, 9 Jul 2026 15:42:47 +0000
Subject: [PATCH] fix(server): parse pid start times in stable locale

---
 packages/server/src/server/pid-lock.test.ts | 3 +--
 packages/server/src/server/pid-lock.ts      | 2 ++
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/packages/server/src/server/pid-lock.test.ts b/packages/server/src/server/pid-lock.test.ts
index 9ded91868..587eb8bd9 100644
--- a/packages/server/src/server/pid-lock.test.ts
+++ b/packages/server/src/server/pid-lock.test.ts
@@ -1,4 +1,4 @@
-import { mkdir, mkdtemp, rm, writeFile } from "node:fs/promises";
+import { mkdtemp, rm, writeFile } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import { describe, expect, test } from "vitest";
@@ -55,7 +55,6 @@ describe("pid-lock ownership", () => {
     const replacementOwnerPid = process.pid + 10_000;
 
     try {
-      await mkdir(paseoHome, { recursive: true });
       await writeFile(
         join(paseoHome, "paseo.pid"),
         JSON.stringify({
diff --git a/packages/server/src/server/pid-lock.ts b/packages/server/src/server/pid-lock.ts
index 5ae4a9067..843b61efb 100644
--- a/packages/server/src/server/pid-lock.ts
+++ b/packages/server/src/server/pid-lock.ts
@@ -37,6 +37,7 @@ export class PidLockError extends Error {
 
 const PROCESS_START_SKEW_TOLERANCE_MS = 60_000;
 const PROCESS_LOCK_ACQUIRE_TOLERANCE_MS = 5 * 60_000;
+const POSIX_PROCESS_TIME_ENV = { ...process.env, LC_ALL: "C", LANG: "C" };
 let cachedClockTicksPerSecond: number | null = null;
 
 function isPidRunning(pid: number): boolean {
@@ -96,6 +97,7 @@ function readPsProcessStartedAtMs(pid: number): number | null {
   try {
     const output = execFileSync("ps", ["-p", String(pid), "-o", "lstart="], {
       encoding: "utf8",
+      env: POSIX_PROCESS_TIME_ENV,
       timeout: 1000,
     }).trim();
     const parsed = Date.parse(output);