diff --git a/configuration.nix b/configuration.nix
index 92621aa..817ca89 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -37,4 +37,6 @@
       ];
     };
   };
+
+  environment.systemPackages = with pkgs; [ gdb ];
 }
diff --git a/vm.nix b/vm.nix
index c74e955..8a30d99 100644
--- a/vm.nix
+++ b/vm.nix
@@ -26,6 +26,7 @@
 
   virtualisation.diskImage = null;
 
-  # FIXME: Broken with a libc trap
+  # FIXME: Broken as rustc injects compressed instructions.
+  # For now we disable it.
   services.nscd.enableNsncd = false;
 }