From 4684be0d80b6a44c3dddacd0372c7f20c09a3514 Mon Sep 17 00:00:00 2001
From: jay <jay@zerojay.com>
Date: Sun, 29 Jun 2025 07:09:49 -0400
Subject: [PATCH] Add upgrade-diff script.

---
 nodes/hosts/common/configuration.nix        | 1 +
 nodes/hosts/common/scripts/upgrade-diff.nix | 9 +++++++++
 2 files changed, 10 insertions(+)
 create mode 100644 nodes/hosts/common/scripts/upgrade-diff.nix

diff --git a/nodes/hosts/common/configuration.nix b/nodes/hosts/common/configuration.nix
index c9cf2c4..6d0306e 100644
--- a/nodes/hosts/common/configuration.nix
+++ b/nodes/hosts/common/configuration.nix
@@ -5,6 +5,7 @@
     ./programs/general.nix
     ./programs/git.nix
     ./programs/kde.nix
+    ./scripts/upgrade-diff.nix
     ./services/desktopmanager.nix
     ./services/displaymanager.nix
   ];
diff --git a/nodes/hosts/common/scripts/upgrade-diff.nix b/nodes/hosts/common/scripts/upgrade-diff.nix
new file mode 100644
index 0000000..83695dc
--- /dev/null
+++ b/nodes/hosts/common/scripts/upgrade-diff.nix
@@ -0,0 +1,9 @@
+{ lib, pkgs, ... }: {
+  system.activationScripts.postUserActivation = {
+    text = ''
+      ${pkgs.nvd}/bin/nvd --nix-bin-dir=${pkgs.nix}/bin diff /run/current-system "$systemConfig"
+    '';
+  } // lib.optionalAttrs pkgs.stdenv.isLinux {
+    supportsDryActivation = true;
+  };
+}