Fix NixOS profile imports

configuration/hardware-configuration.nix

@@ -1,11 +1,11 @@
 # Do not modify this file!  It was generated by ‘nixos-generate-config’
 # and may be overwritten by future invocations.  Please make changes
 # to /etc/nixos/configuration.nix instead.
-{ config, lib, pkgs, ... }:
+{ config, lib, pkgs, modulesPath, ... }:
 
 {
   imports =
-    [ <nixpkgs/nixos/modules/profiles/qemu-guest.nix>
+    [ (modulesPath + "/profiles/qemu-guest.nix")
     ];
 
   boot.initrd.availableKernelModules = [ "virtio_pci" "ahci" "sd_mod" ];

flake.nix

@@ -39,13 +39,15 @@
           system = "x86_64-linux";
 
           modules = [
-            ({ ... }: { nixpkgs.overlays = overlays; })
+            ({ modulesPath, ... }: {
+              imports = [ (modulesPath + "/profiles/headless.nix") ];
+              nixpkgs.overlays = overlays;
+            })
             (import ./modules)
 
             (import ./configuration)
             (import ./configuration/linode.nix)
             (import ./configuration/hardware-configuration.nix)
-            nixpkgs.modules.headless
           ];
         };
 
@@ -53,7 +55,10 @@
           system = "x86_64-linux";
 
           modules = [
-            ({ ... }: { nixpkgs.overlays = overlays; })
+            ({ modulesPath, ... }: {
+              imports = [ (modulesPath + "/profiles/headless.nix") ];
+              nixpkgs.overlays = overlays;
+            })
             (import ./modules)
 
             (import ./configuration)