Prevent SCARLETT from mounting

hosts/desktop/hardware-configuration.nix

@@ -23,6 +23,14 @@
       device = "/dev/disk/by-label/boot";
       fsType = "vfat";
     };
+    # Prevent SCARLETT from auto-mounting
+    # https://askubuntu.com/a/959004
+    # If noauto isn't set it will try to mount,
+    # and crash the system if /mnt/scarlett doesn't exist
+    "/mnt/scarlett" = {
+      device = "/dev/disk/by-label/SCARLETT";
+      options = [ "defaults" "noauto" ];
+    };
   };
 
   swapDevices = [ ];