fix: don't fail if the file already exists (Windows Reflinks) (#7555)

close #7554

.changeset/tough-hounds-laugh.md

@@ -0,0 +1,6 @@
+---
+"@pnpm/fs.indexed-pkg-importer": patch
+"pnpm": patch
+---
+
+Don't fail in Windows CoW if the file already exists [#7554](https://github.com/pnpm/pnpm/issues/7554).

fs/indexed-pkg-importer/src/index.ts

@@ -136,7 +136,7 @@ function createCloneFunction (): CloneFunction {
         // If the file already exists, then we just proceed.
         // This will probably only happen if the package's index file contains the same file twice.
         // For instance: { "index.js": "hash", "./index.js": "hash" }
-        if (!err.message.startsWith('File exists')) throw err
+        if (!err.message.startsWith('File exists') && !err.message.includes('-2147024816')) throw err
       }
     }
   }