Sharing folder between Tahoe host and Nixos VM

I am trying Parallels on a M4 Tahoe host with a NixOS VM. So far, it works perfectly out of the box (performance, screen, network, sound...).
All it took was:

```
nixpkgs.config.allowUnfree = true;
hardware.parallels.enable = true;
```

I only have one issue: how can I share one of my mac folder with the VM?
I activated the sharing in Parallels settings, but I don't see any /mnt or /media path in my VM.

Thanks a lot!