Improve Proxmox backup image generation

configuration/proxmox-vm/default.nix

@@ -1,5 +1,9 @@
 { ... }:
 {
+  imports = [
+    ./hardware-configuration.nix
+  ];
+
   # Enable console output on TTY1 and serial console
   boot.kernelParams = [
     "console=tty1"

configuration/proxmox-vm/hardware-configuration.nix

@@ -1,11 +1,14 @@
 { config, lib, modulesPath, ... }:
 {
+  # hardware-configuration.nix copied and adapted from the default configuration generated by nixos-generators
+
   imports = [
     (modulesPath + "/profiles/qemu-guest.nix")
   ];
 
   boot = {
     initrd = {
+      # To use the VirtIO SCSI disks, add the "virtio_scsi" kernel module to availableKernelModules
       availableKernelModules = [ "uhci_hcd" "ehci_pci" "ahci" "virtio_pci" "virtio_blk" ];
       kernelModules = [ ];
     };