Adds report-hm-changes script

home.nix

@@ -1,7 +1,7 @@
 { config, pkgs, ... }:
 
 {
-  imports = [ ./programs ./launchd.nix ./nix.nix ];
+  imports = [ ./programs ./scripts ./launchd.nix ./nix.nix ];
 
   home.username = "abhinav";
   home.homeDirectory = "/Users/abhinav";

justfile

@@ -25,6 +25,7 @@ build: (_run "_build")
 
 _switch:
     home-manager -v switch --flake "{{ root_dir }}#abhinav"
+    report-hm-changes
 
 # switch to latest home-manager generation
 switch: (_run "_switch")

scripts/default.nix

@@ -0,0 +1,7 @@
+{ config, lib, pkgs, ... }:
+
+let
+  rc = pkgs.callPackage ./report-hm-changes.nix { inherit config pkgs; };
+in {
+  home.packages = [ rc ];
+}

scripts/report-hm-changes.nix

@@ -0,0 +1,13 @@
+{ config, pkgs, ... }:
+
+let
+  profiles = "/nix/var/nix/profiles/per-user/${config.home.username}/home-manager-*-link";
+in
+pkgs.writeShellScriptBin "report-hm-changes" ''
+  # Disable nvd if there are less than 2 hm profiles.
+  if [ $(ls -d1v ${profiles} 2>/dev/null | wc -l) -lt 2 ]; then
+    echo "Skipping changes report..."
+  else
+    ${pkgs.nvd}/bin/nvd diff $(ls -d1v ${profiles} | tail -2)
+  fi
+''