From 32a4144c42bde88ee39eb455b5da09b43c88d0d5 Mon Sep 17 00:00:00 2001
From: Mohammad Rafiq <rafiq@rrv.sh>
Date: Wed, 18 Jun 2025 21:05:48 +0800
Subject: [PATCH] feat(nixos): add configurationLimit option to systemd-boot

---
 lib/default.nix                              |  6 ++++
 modules/nixos/machine/bootloader/default.nix | 34 ++++++++++----------
 2 files changed, 23 insertions(+), 17 deletions(-)

diff --git a/lib/default.nix b/lib/default.nix
index 760f52c..087cab9 100644
--- a/lib/default.nix
+++ b/lib/default.nix
@@ -19,6 +19,12 @@ rec {
     type = lib.types.attrs;
     default = { };
   };
+  mkIntOption =
+    default:
+    lib.mkOption {
+      type = lib.types.int;
+      inherit default;
+    };
   mkStrOption = lib.mkOption {
     type = lib.types.str;
     default = "";
diff --git a/modules/nixos/machine/bootloader/default.nix b/modules/nixos/machine/bootloader/default.nix
index 9fc63fb..b5cedea 100644
--- a/modules/nixos/machine/bootloader/default.nix
+++ b/modules/nixos/machine/bootloader/default.nix
@@ -4,27 +4,27 @@
   ...
 }:
 let
-  inherit (lib.pantheon) mkStrOption;
+  inherit (lib.pantheon) mkIntOption mkStrOption;
   cfg = config.machine.bootloader;
 in
 {
   options.machine.bootloader = {
     type = mkStrOption;
+    configurationLimit = mkIntOption 5;
+  };
+  config.boot = {
+    initrd.availableKernelModules = [
+      "nvme"
+      "xhci_pci"
+      "ahci"
+      "usbhid"
+      "usb_storage"
+      "sd_mod"
+    ];
+    loader.efi.canTouchEfiVariables = true;
+    loader.systemd-boot = {
+      enable = cfg.type == "systemd-boot";
+      inherit (cfg) configurationLimit;
+    };
   };
-  config = lib.mkMerge [
-    {
-      boot.initrd.availableKernelModules = [
-        "nvme"
-        "xhci_pci"
-        "ahci"
-        "usbhid"
-        "usb_storage"
-        "sd_mod"
-      ];
-      boot.loader.efi.canTouchEfiVariables = true;
-    }
-    (lib.mkIf (config.machine.bootloader.type == "systemd-boot") {
-      boot.loader.systemd-boot.enable = true;
-    })
-  ];
 }