diff --git a/krebs/1systems/hotdog/config.nix b/krebs/1systems/hotdog/config.nix
index 3eb7b9aa1..9d87eba48 100644
--- a/krebs/1systems/hotdog/config.nix
+++ b/krebs/1systems/hotdog/config.nix
@@ -10,6 +10,7 @@
     <stockholm/krebs/2configs>
 
     <stockholm/krebs/2configs/buildbot-all.nix>
+    <stockholm/krebs/2configs/binary-cache/nixos.nix>
   ];
 
   krebs.build.host = config.krebs.hosts.hotdog;
diff --git a/krebs/1systems/puyak/config.nix b/krebs/1systems/puyak/config.nix
index deede4493..d4a4941ca 100644
--- a/krebs/1systems/puyak/config.nix
+++ b/krebs/1systems/puyak/config.nix
@@ -9,6 +9,7 @@
 
     <stockholm/krebs/2configs/buildbot-krebs.nix>
     <stockholm/krebs/2configs/stats/puyak-client.nix>
+    <stockholm/krebs/2configs/binary-cache/nixos.nix>
     <stockholm/krebs/2configs/binary-cache/prism.nix>
   ];
 
diff --git a/krebs/1systems/wolf/config.nix b/krebs/1systems/wolf/config.nix
index ec9c78db5..91aabb716 100644
--- a/krebs/1systems/wolf/config.nix
+++ b/krebs/1systems/wolf/config.nix
@@ -13,6 +13,7 @@ in
 
     <stockholm/krebs/2configs/graphite.nix>
     <stockholm/krebs/2configs/buildbot-krebs.nix>
+    <stockholm/krebs/2configs/binary-cache/nixos.nix>
     <stockholm/krebs/2configs/binary-cache/prism.nix>
 
     <stockholm/krebs/2configs/shack/worlddomination.nix>
diff --git a/krebs/2configs/binary-cache/nixos.nix b/krebs/2configs/binary-cache/nixos.nix
new file mode 100644
index 000000000..2ff5e1307
--- /dev/null
+++ b/krebs/2configs/binary-cache/nixos.nix
@@ -0,0 +1,12 @@
+{ config, ... }:
+
+{
+  nix = {
+    binaryCaches = [
+      "https://cache.nixos.org/"
+    ];
+    binaryCachePublicKeys = [
+      "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
+    ];
+  };
+}
diff --git a/lass/5pkgs/init/default.nix b/lass/5pkgs/init/default.nix
index 679187531..b386fa94b 100644
--- a/lass/5pkgs/init/default.nix
+++ b/lass/5pkgs/init/default.nix
@@ -46,7 +46,7 @@ pkgs.writeText "init" ''
   #   dd if=/dev/zero bs=512 count=34 of=/dev/sda
   # TODO zero last 34 blocks (lsblk -bno SIZE /dev/sda)
   if ! test "$(blkid -o value -s PTTYPE "$disk")" = gpt; then
-    parted -a optimal "$disk" \
+    parted -s -a optimal "$disk" \
         mklabel gpt \
         mkpart no-fs 0 1024KiB \
         set 1 bios_grub on \