Add two new servers

hosts/detritus/boot/default.nix

@@ -1,10 +1,11 @@
-{ ... }:
+{ pkgs, ... }:
 {
   boot = {
+    kernelPackages = pkgs.linuxPackages_hardened;
     kernelParams = [
       "amdgpu.si_support=1"
       "radeon.si_support=0"
     ];
-    lanzaboote.enable = true;
+    loader.systemd-boot.enable = true;
   };
 }