1 files changed, 38 insertions, 0 deletions
diff --git a/nixos/modules/system/boot/loader/external/external.nix b/nixos/modules/system/boot/loader/external/external.nix
new file mode 100644
index 0000000000000..5cf478e6c83cd
--- /dev/null
+++ b/nixos/modules/system/boot/loader/external/external.nix
@@ -0,0 +1,38 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.boot.loader.external;
+in
+{
+  meta = {
+    maintainers = with maintainers; [ cole-h grahamc raitobezarius ];
+    # Don't edit the docbook xml directly, edit the md and generate it:
+    # `pandoc external.md -t docbook --top-level-division=chapter --extract-media=media -f markdown+smart > external.xml`
+    doc = ./external.xml;
+  };
+
+  options.boot.loader.external = {
+    enable = mkEnableOption (lib.mdDoc "use an external tool to install your bootloader");
+
+    installHook = mkOption {
+      type = with types; path;
+      description = lib.mdDoc ''
+        The full path to a program of your choosing which performs the bootloader installation process.
+
+        The program will be called with an argument pointing to the output of the system's toplevel.
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    boot.loader = {
+      grub.enable = mkDefault false;
+      systemd-boot.enable = mkDefault false;
+      supportsInitrdSecrets = mkDefault false;
+    };
+
+    system.build.installBootLoader = cfg.installHook;
+  };
+}