From 5156e5a61f58adb2c5deb3ff15a3bcfd8a27b0a2 Mon Sep 17 00:00:00 2001
From: Daylin Morgan <me@dayl.in>
Date: Mon, 15 Jul 2024 13:30:02 -0500
Subject: [PATCH] add pretty printer on system change

---
 modules/nix.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/modules/nix.nix b/modules/nix.nix
index d8234f7..f243c6d 100644
--- a/modules/nix.nix
+++ b/modules/nix.nix
@@ -40,6 +40,12 @@
   programs.nix-index.enableBashIntegration = false;
   programs.nix-index.enableFishIntegration = false;
 
+  system.activationScripts.diff = ''
+    if [[ -e /run/current-system ]]; then
+      ${pkgs.nix}/bin/nix store diff-closures /run/current-system "$systemConfig"
+    fi
+  '';
+
   nix.settings = {
     trusted-users = [ "@wheel" ];
     accept-flake-config = true;