Flake: Add patch to fix nixpkgs-unstable grup install script

flake.nix

@@ -100,7 +100,9 @@
         nixpkgs-unstable-patched = nixpkgs-raw.legacyPackages.x86_64-linux.applyPatches {
           name = "patched-nixpkgs-unstable";
           src = nixpkgs-unstable-raw;
-          patches = [];
+          patches = [
+            ./nixpkgs_patches/pr383269.patch
+          ];
         };
         nixpkgs-patched = nixpkgs-raw.legacyPackages.x86_64-linux.applyPatches {
           name = "patched-nixpkgs";
@@ -172,7 +174,8 @@
                     then home-manager
                     else home-manager-unstable
                   )
-                  .nixosModules.home-manager
+                  .nixosModules
+                  .home-manager
                   (
                     if stable
                     then nix-index-db

nixpkgs_patches/pr383269.patch

@@ -0,0 +1,22 @@
+From 39dd19122fdabf519c256796df0ed998515990a6 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?J=C3=B6rg=20Thalheim?= <joerg@thalheim.io>
+Date: Wed, 19 Feb 2025 14:33:33 +0700
+Subject: [PATCH] install-grub: add missing rmtree
+
+---
+ nixos/modules/system/boot/loader/grub/install-grub.pl | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/nixos/modules/system/boot/loader/grub/install-grub.pl b/nixos/modules/system/boot/loader/grub/install-grub.pl
+index 4a588a75da147..f5ae844da21f9 100644
+--- a/nixos/modules/system/boot/loader/grub/install-grub.pl
++++ b/nixos/modules/system/boot/loader/grub/install-grub.pl
+@@ -3,7 +3,7 @@
+ use Class::Struct;
+ use XML::LibXML;
+ use File::Basename;
+-use File::Path qw(make_path);
++use File::Path qw(make_path rmtree);
+ use File::stat;
+ use File::Copy;
+ use File::Copy::Recursive qw(rcopy pathrm);