refactor(system): flatten

inputs/system/modules/base/boot/loader/systemd.nix

@@ -0,0 +1,18 @@
+{ lib, config, ... }:
+
+let
+  inherit (lib) mkIf;
+  bootloader = config.systemModules.boot.loader;
+in
+
+{
+  config = mkIf (bootloader == "systemd") {
+    boot.loader = {
+      systemd-boot = {
+        enable = true;
+        consoleMode = "max";
+      };
+      efi.canTouchEfiVariables = true;
+    };
+  };
+}