From 0a77da779a056fa3db8265bd9a7d2108688c966c Mon Sep 17 00:00:00 2001
From: _Kerman <kermanx@qq.com>
Date: Fri, 29 May 2026 14:23:17 +0800
Subject: [PATCH] fix(agent-core): handle ripgrep cross-device install

---
 .changeset/fix-ripgrep-cross-device-copy.md         |  6 ++++++
 packages/agent-core/src/tools/support/rg-locator.ts | 13 ++++++++++---
 2 files changed, 16 insertions(+), 3 deletions(-)
 create mode 100644 .changeset/fix-ripgrep-cross-device-copy.md

diff --git a/.changeset/fix-ripgrep-cross-device-copy.md b/.changeset/fix-ripgrep-cross-device-copy.md
new file mode 100644
index 0000000000..a4b15a9cb5
--- /dev/null
+++ b/.changeset/fix-ripgrep-cross-device-copy.md
@@ -0,0 +1,6 @@
+---
+"@moonshot-ai/agent-core": patch
+"@moonshot-ai/kimi-code": patch
+---
+
+Fix automatic ripgrep installation when temporary files are on another filesystem.
diff --git a/packages/agent-core/src/tools/support/rg-locator.ts b/packages/agent-core/src/tools/support/rg-locator.ts
index f8b0ec002f..88ae3610f6 100644
--- a/packages/agent-core/src/tools/support/rg-locator.ts
+++ b/packages/agent-core/src/tools/support/rg-locator.ts
@@ -14,7 +14,7 @@
 
 import { createHash } from 'node:crypto';
 import { createWriteStream, existsSync } from 'node:fs';
-import { chmod, mkdir, mkdtemp, readFile, rename, rm, stat } from 'node:fs/promises';
+import { chmod, copyFile, mkdir, mkdtemp, readFile, rename, rm, stat } from 'node:fs/promises';
 import { homedir, tmpdir } from 'node:os';
 import { basename, join } from 'pathe';
 import { Readable } from 'node:stream';
@@ -243,8 +243,15 @@ async function downloadAndInstallRg(shareDir: string): Promise<string> {
             'CDN content may have changed.',
         );
       }
-      await rename(extracted, destination);
-      await chmod(destination, 0o755);
+      const installDir = await mkdtemp(join(binDir, '.rg-install-'));
+      const staged = join(installDir, rgBinaryName());
+      try {
+        await copyFile(extracted, staged);
+        await chmod(staged, 0o755);
+        await rename(staged, destination);
+      } finally {
+        await rm(installDir, { recursive: true, force: true });
+      }
     }
     return destination;
   } finally {