diff --git a/configurations/hp500281.nix b/configurations/hp500281.nix
index d5c107d9..d6e08b8a 100644
--- a/configurations/hp500281.nix
+++ b/configurations/hp500281.nix
@@ -24,6 +24,7 @@ in
   };
 
   nix.maxJobs = lib.mkDefault 4;
+  nix.systemFeatures = [ "gccarch-haswell" ];
 
   boot.loader.systemd-boot = {
     enable = true;
diff --git a/profiles/core.nix b/profiles/core.nix
index 66ba64e5..e82201d5 100644
--- a/profiles/core.nix
+++ b/profiles/core.nix
@@ -8,6 +8,13 @@ in
 {
   nix.package = pkgs.nixFlakes;
 
+  nix.systemFeatures = [
+    "nixos-test"
+    "benchmark"
+    "big-parallel"
+    "kvm"
+  ];
+
   imports = [
     ../local/locale.nix
     ../local/file-systems.nix