speer: Enable secure boot

nixos-modules/base-system/default.nix

@@ -1,4 +1,29 @@
-{ inputs, ... }:
+{
+  inputs,
+  pkgs,
+  lib,
+  ...
+}:
 {
   imports = [ inputs.lanzaboote.nixosModules.lanzaboote ];
+
+  environment.systemPackages = [
+    # For debugging and troubleshooting Secure Boot.
+    pkgs.sbctl
+  ];
+
+
+  boot.loader.efi.canTouchEfiVariables = true;
+  boot.initrd.systemd.enable = true;
+
+  # Lanzaboote currently replaces the systemd-boot module.
+  # This setting is usually set to true in configuration.nix
+  # generated at installation time. So we force it to false
+  # for now.
+  boot.loader.systemd-boot.enable = lib.mkForce false;
+
+  boot.lanzaboote = {
+    enable = true;
+    pkiBundle = "/var/lib/sbctl";
+  };
 }

nixos-modules/base/applications.nix

@@ -26,7 +26,6 @@
       pwgen
       powertop
       lm_sensors
-      sbctl
     ]
     ++ [
       nixfmt-rfc-style