server{7-10}: set full nix.settings.system-features for building

hosts/server10/default.nix

@@ -46,6 +46,10 @@
   };
 
   simd.arch = "ivybridge";
+  nix.settings.system-features = [
+    "kvm" "big-parallel"
+    "nixos-test" "benchmark"
+  ];
 
   sops = {
     defaultSopsFile = ./secrets.yaml;

hosts/server7/default.nix

@@ -28,6 +28,10 @@
   };
 
   simd.arch = "ivybridge"; # E5-2690 v2
+  nix.settings.system-features = [
+    "kvm" "big-parallel"
+    "nixos-test" "benchmark"
+  ];
 
   sops = {
     defaultSopsFile = ./secrets.yaml;

hosts/server8/default.nix

@@ -57,6 +57,10 @@
   };
 
   simd.arch = "westmere";
+  nix.settings.system-features = [
+    "kvm" "big-parallel"
+    "nixos-test" "benchmark"
+  ];
 
   sops = {
     defaultSopsFile = ./secrets.yaml;

hosts/server9/default.nix

@@ -41,6 +41,10 @@
   };
 
   simd.arch = "westmere";
+  nix.settings.system-features = [
+    "kvm" "big-parallel"
+    "nixos-test" "benchmark"
+  ];
 
   sops = {
     defaultSopsFile = ./secrets.yaml;