diff --git a/krebs/3modules/tv/default.nix b/krebs/3modules/tv/default.nix
index 8e266e1b3..b29553c79 100644
--- a/krebs/3modules/tv/default.nix
+++ b/krebs/3modules/tv/default.nix
@@ -351,11 +351,17 @@ with import <stockholm/lib>;
       ssh.pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIcJvu8JDVzObLUtlAQg9qVugthKSfitwCljuJ5liyHa";
     };
     xu = {
+      binary-cache = {
+        pubkey = "xu-1:pYRENvaxZqGeImwLA9qHmRwHV4jfKaYx4u1VcZ31x0s=";
+      };
       cores = 4;
       nets = {
         gg23 = {
           ip4.addr = "10.23.1.38";
-          aliases = ["xu.gg23"];
+          aliases = [
+            "cache.xu.gg23"
+            "xu.gg23"
+          ];
           ssh.port = 11423;
         };
         retiolum = {
diff --git a/tv/1systems/nomic.nix b/tv/1systems/nomic.nix
index 6669b5dcf..7d6a1d682 100644
--- a/tv/1systems/nomic.nix
+++ b/tv/1systems/nomic.nix
@@ -15,7 +15,6 @@ with import <stockholm/lib>;
     ../2configs/nginx/public_html.nix
     ../2configs/pulse.nix
     ../2configs/retiolum.nix
-    ../2configs/wu-binary-cache/client.nix
     ../2configs/xserver
   ];
 
diff --git a/tv/1systems/wu.nix b/tv/1systems/wu.nix
index 19db559f1..d5be57bb8 100644
--- a/tv/1systems/wu.nix
+++ b/tv/1systems/wu.nix
@@ -16,7 +16,6 @@ with import <stockholm/lib>;
     ../2configs/nginx/public_html.nix
     ../2configs/pulse.nix
     ../2configs/retiolum.nix
-    ../2configs/wu-binary-cache
     ../2configs/xserver
     {
       environment.systemPackages = with pkgs; [
diff --git a/tv/1systems/xu.nix b/tv/1systems/xu.nix
index a7e0b839d..b6fe6dc5c 100644
--- a/tv/1systems/xu.nix
+++ b/tv/1systems/xu.nix
@@ -15,7 +15,7 @@ with import <stockholm/lib>;
     ../2configs/nginx/public_html.nix
     ../2configs/pulse.nix
     ../2configs/retiolum.nix
-    ../2configs/wu-binary-cache/client.nix
+    ../2configs/binary-cache
     ../2configs/xserver
     ../2configs/xu-qemu0.nix
     {
diff --git a/tv/1systems/zu.nix b/tv/1systems/zu.nix
index 056652e4b..59e8b1c7f 100644
--- a/tv/1systems/zu.nix
+++ b/tv/1systems/zu.nix
@@ -21,7 +21,6 @@ with import <stockholm/lib>;
     ../2configs/nginx/public_html.nix
     ../2configs/pulse.nix
     ../2configs/retiolum.nix
-    ../2configs/wu-binary-cache/client.nix
     ../2configs/xserver
     {
       environment.systemPackages = with pkgs; [
diff --git a/tv/2configs/wu-binary-cache/default.nix b/tv/2configs/binary-cache/default.nix
similarity index 62%
rename from tv/2configs/wu-binary-cache/default.nix
rename to tv/2configs/binary-cache/default.nix
index f039a552b..5902f1895 100644
--- a/tv/2configs/wu-binary-cache/default.nix
+++ b/tv/2configs/binary-cache/default.nix
@@ -1,22 +1,30 @@
 { config, lib, pkgs, ... }: with import <stockholm/lib>;
 {
-  services.nix-serve = assert config.krebs.build.host.name == "wu"; {
+  environment.etc."binary-cache.pubkey".text =
+    config.krebs.build.host.binary-cache.pubkey;
+
+  services.nix-serve = {
     enable = true;
-    secretKeyFile = config.krebs.secret.files.nix-serve-key.path;
+    secretKeyFile = config.krebs.secret.files.binary-cache-seckey.path;
   };
+
   systemd.services.nix-serve = {
     requires = ["secret.service"];
     after = ["secret.service"];
   };
-  krebs.secret.files.nix-serve-key = {
+
+  krebs.secret.files.binary-cache-seckey = {
     path = "/run/secret/nix-serve.key";
     owner.name = "nix-serve";
     source-path = toString <secrets> + "/nix-serve.key";
   };
+
   krebs.nginx = {
     enable = true;
     servers.nix-serve = {
-      server-names = [ "cache.wu.gg23" ];
+      server-names = [
+        "cache.${config.krebs.build.host.name}.gg23"
+      ];
       locations = singleton (nameValuePair "/" ''
         proxy_pass http://localhost:${toString config.services.nix-serve.port};
       '');
diff --git a/tv/2configs/wu-binary-cache/client.nix b/tv/2configs/wu-binary-cache/client.nix
deleted file mode 100644
index 9634c21d4..000000000
--- a/tv/2configs/wu-binary-cache/client.nix
+++ /dev/null
@@ -1,7 +0,0 @@
-_:
-{
-  nix = {
-    binaryCaches = ["http://cache.wu.gg23"];
-    binaryCachePublicKeys = ["cache.wu-1:cdhA201O2R2Ect463vhJFmhpMaNyT/tOvzYvtceT9q8="];
-  };
-}