diff --git a/lib/meat.ml b/lib/meat.ml
index 04346aa..867784e 100644
--- a/lib/meat.ml
+++ b/lib/meat.ml
@@ -36,10 +36,11 @@ let do_build () =
   let ( >|= ) = Fun.flip Result.map in
   let tmpdir = Filename.temp_dir "meat-build" "" in
   let build_target =
-    Unix.getenv "MEATS" ^ "#nixosConfigurations." ^ Unix.gethostname ()
-    ^ ".config.system.build.toplevel"
+    Unix.getenv "MEATS" ^ "/entry.nix -A nixosConfigurations."
+    ^ Unix.gethostname () ^ ".config.system.build.toplevel"
   in
-  do_cmd @@ "nix build --out-link " ^ tmpdir ^ "/build " ^ build_target
+  do_cmd @@ "nix-build --log-format internal-json -v --out-link " ^ tmpdir
+  ^ "/build " ^ build_target ^ " |& nom --json"
   >>= fun () ->
   do_cmd @@ "sudo nix-env --set -p /nix/var/nix/profiles/system " ^ tmpdir
   ^ "/build"
diff --git a/nix/module.nix b/nix/module.nix
index b9248c4..21e1d2e 100644
--- a/nix/module.nix
+++ b/nix/module.nix
@@ -25,6 +25,7 @@ in
     environment.systemPackages = [
       cfg.package
       pkgs.nh # for now..
+      pkgs.nix-output-monitor
     ];
   };
 }