web-01: refactor disko import

machines/web-01/configuration.nix

@@ -3,15 +3,10 @@
 # and in the NixOS manual (accessible by running ‘nixos-help’).
 
 { config, pkgs, lib, ... }:
-let
-  sources = import ../../npins;
-in
 {
   imports =
     [ # Include the results of the hardware scan.
       ./hardware-configuration.nix
-      (sources.disko + "/module.nix")
-      ./disko.nix
     ];
 
   # Use the systemd-boot EFI boot loader.

machines/web-01/hardware-configuration.nix

@@ -4,8 +4,10 @@
 { config, lib, pkgs, modulesPath, ... }:
 
 {
-  imports =
-    [ (modulesPath + "/profiles/qemu-guest.nix")
+  imports = [
+      (modulesPath + "/profiles/qemu-guest.nix")
+      (let sources = import ../../npins; in sources.disko + "/module.nix")
+      ./disko.nix
     ];
 
   boot.initrd.availableKernelModules = [ "ata_piix" "uhci_hcd" "ehci_pci" "virtio_pci" "ahci" "virtio_blk" ];