[bug]: pnpm add @radix-ui/react-slot Fails with ERR_PNPM_VIRTUAL_STORE_DIR_MAX_LENGTH_DIFF

[3ZaR-DEV]

Describe the bug

When attempting to install the Badge, Button, etc componets using pnpm the command fails with an exit code 1 and throws the error ERR_PNPM_VIRTUAL_STORE_DIR_MAX_LENGTH_DIFF.

• Complete error (shown when installing dependencies) :

Something went wrong. Please check the error below for more details.
If the problem persists, please open an issue on GitHub.

Command failed with exit code 1: pnpm add @radix-ui/react-slot
 ERR_PNPM_VIRTUAL_STORE_DIR_MAX_LENGTH_DIFF  This modules directory was created using a different virtual-store-dir-max-length value. Run "pnpm install" to recreate the modules directory.

• It gives this error even when @radix-ui/react-slot is already installed manually.

Even after running pnpm install as suggested, the error persists when attempting to add the package again.

• The only way for users who get this error is installing the components manually and install @radix-ui/react-slot separately if needed.

• Why This Happens :
  pnpm uses a virtual store (e.g., node_modules/.pnpm) to hard-link dependencies from a global store, optimizing disk space and installation speed.

The virtual-store-dir-max-length setting determines how long directory names can be in this structure. If this value changes after the virtual store is created, pnpm detects a mismatch and refuses to proceed, as it can’t guarantee compatibility with the existing structure.

Affected component/components

Badge, Button, etc

How to reproduce

1. Recreate Modules: pnpm install
2. Retry Command: pnpm dlx shadcn@latest add badge or other components
3. If Fails, Reset:

rmdir /s /q node_modules
del pnpm-lock.yaml

4. Set Consistent Config (Optional):

echo virtual-store-dir-max-length=120>>.npmrc

---

• Users try to install @radix-ui/react-slot manually if giving error when installing a components using cli.

Codesandbox/StackBlitz link

No response

Logs

Command failed with exit code 1: pnpm add @radix-ui/react-slot
 ERR_PNPM_VIRTUAL_STORE_DIR_MAX_LENGTH_DIFF  This modules directory was created using a different virtual-store-dir-max-length value. Run "pnpm install" to recreate the modules directory.

System Info

- NextJS: 15.2.4
- TailwindCSS: 4
- Package Manager: PNPM 10.5.2
- OS: WIN11

Before submitting

• I've made research efforts and searched the documentation
• I've searched for existing issues