From 10e188c5a93bbdd4eb1ce9521175468bec428112 Mon Sep 17 00:00:00 2001
From: Christoph Hollizeck <christoph.hollizeck@hey.com>
Date: Mon, 28 Apr 2025 22:07:37 +0200
Subject: [PATCH] hydra: set localhost to use protocol null

---
 systems/x86_64-linux/loptland/default.nix | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/systems/x86_64-linux/loptland/default.nix b/systems/x86_64-linux/loptland/default.nix
index 71128ae..785d616 100644
--- a/systems/x86_64-linux/loptland/default.nix
+++ b/systems/x86_64-linux/loptland/default.nix
@@ -143,12 +143,29 @@ in
     certificateScheme = "acme-nginx";
   };
 
+  nix = {
+    distributedBuilds = true;
+
+    buildMachines = [
+      {
+        hostName = "localhost";
+        protocol = null;
+        system = "x86_64-linux";
+        supportedFeatures = [
+          "kvm"
+          "nixos-test"
+          "big-parallel"
+          "benchmark"
+        ];
+      }
+    ];
+  };
+
   services.hydra = {
     enable = true;
     hydraURL = "http://localhost:${toString hydraPort}";
     port = hydraPort;
     notificationSender = "hydra@localhost";
-    buildMachinesFiles = [ ];
     useSubstitutes = true;
   };