fix

modules/applications/slack.nix

@@ -0,0 +1,26 @@
+{
+  pkgs,
+  lib,
+  config,
+  ...
+}:
+let
+  cfg = config.my.applications.slack;
+in
+{
+  options.my.applications.slack = {
+    enable = lib.mkEnableOption "Slack messaging client";
+  };
+
+  config = lib.mkIf cfg.enable {
+    nixpkgs.config.allowUnfreePredicate = pkg: lib.getName pkg == "slack";
+
+    home-manager.sharedModules = [
+      {
+        home.packages = with pkgs; [
+          slack # Team messaging and collaboration platform
+        ];
+      }
+    ];
+  };
+}