darwin apps should be put to spotlights

flake.lock

@@ -458,11 +458,11 @@
     },
     "nixpkgs_4": {
       "locked": {
-        "lastModified": 1679262748,
-        "narHash": "sha256-DQCrrAFrkxijC6haUzOC5ZoFqpcv/tg2WxnyW3np1Cc=",
+        "lastModified": 1679437018,
+        "narHash": "sha256-vOuiDPLHSEo/7NkiWtxpHpHgoXoNmrm+wkXZ6a072Fc=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "60c1d71f2ba4c80178ec84523c2ca0801522e0a6",
+        "rev": "19cf008bb18e47b6e3b4e16e32a9a4bdd4b45f7e",
         "type": "github"
       },
       "original": {

nix-conf/home-manager/base/darwin-spotlight.nix

@@ -0,0 +1,28 @@
+{ lib, pkgs, config, ... }:
+{
+  # Copy GUI apps to "~/Applications/Home Manager Apps"
+  # Based on this comment: https://github.com/nix-community/home-manager/issues/1341#issuecomment-778820334
+  home.activation.darwinApps =
+    if pkgs.stdenv.isDarwin then
+      let
+        apps = pkgs.buildEnv {
+          name = "home-manager-applications";
+          paths = config.home.packages;
+          pathsToLink = "/Applications";
+        };
+      in
+      lib.hm.dag.entryAfter [ "writeBoundary" ] ''
+        # Install MacOS applications to the user environment.
+        HM_APPS="$HOME/Applications/Home Manager Apps"
+        # Reset current state
+        [ -e "$HM_APPS" ] && $DRY_RUN_CMD rm -r "$HM_APPS"
+        $DRY_RUN_CMD mkdir -p "$HM_APPS"
+        # .app dirs need to be actual directories for Finder to detect them as Apps.
+        # In the env of Apps we build, the .apps are symlinks. We pass all of them as
+        # arguments to cp and make it dereference those using -H
+        $DRY_RUN_CMD cp --archive -H --dereference ${apps}/Applications/* "$HM_APPS"
+        $DRY_RUN_CMD chmod +w -R "$HM_APPS"
+      ''
+    else
+      "";
+}

nix-conf/home-manager/flake.nix

@@ -179,6 +179,7 @@
             modules = base.modules ++ [
               ./home.nix
               ./base/productive_desktop.nix
+              ./base/darwin-spotlight.nix
               {
                 base.private_chromium.enable = false;
               }