Update CI server configuration

servers/hydra.nix

@@ -0,0 +1,41 @@
+{ ... }:
+let
+  domain = "ci.sinerva.eu";
+in
+{
+  imports = [
+    ./utils/nginx-https-server.nix
+    ./utils/acme-http-client.nix
+  ];
+
+  services = {
+    hydra = {
+      enable = true;
+      hydraURL = "https://${domain}";
+      listenHost = "localhost";
+      notificationSender = "hydra@sinerva.eu";
+      port = 8080;
+      useSubstitutes = true;
+    };
+
+    nginx.virtualHosts.${domain}.locations."/" = {
+      proxyPass = "http://localhost:8080";
+    };
+  };
+
+  nix.buildMachines = [
+    {
+      hostName = "localhost";
+      protocol = null;
+      system = "x86_64-linux";
+      supportedFeatures = [
+        "kvm"
+        "nixos-test"
+        "big-parallel"
+        "benchmark"
+      ];
+      maxJobs = 6;
+    }
+  ];
+
+}