Add an actual multi-user home configuration

home/comma.nix

@@ -0,0 +1,10 @@
+{ lib, pkgs, config, inputs, ... } @args:
+{
+  imports = [
+    inputs.nix-index-database.hmModules.nix-index
+  ];
+
+  home.packages = with pkgs; [
+    comma
+  ];
+}

home/root.nix

@@ -1,2 +1,6 @@
 { config, lib, pkgs, ... }@args:
-{ }
+{ 
+  imports = [
+    ./comma.nix
+  ];
+}