diff --git a/config/hosts/forgejo-actions-runner/forgejo-actions-runner.nix b/config/hosts/forgejo-actions-runner/forgejo-actions-runner.nix
index 376fde6..24e1472 100644
--- a/config/hosts/forgejo-actions-runner/forgejo-actions-runner.nix
+++ b/config/hosts/forgejo-actions-runner/forgejo-actions-runner.nix
@@ -3,11 +3,11 @@
 # - https://forgejo.org/docs/latest/user/actions/
 # - https://docs.gitea.com/next/usage/actions/act-runner
 
-{ config, pkgs, ... }:
+{ config, pkgs-unstable, ... }:
 
 {
   services.gitea-actions-runner = {
-    package = pkgs.forgejo-runner;
+    package = pkgs-unstable.forgejo-actions-runner;
     instances.ccchh-forgejo-global-docker = {
       enable = true;
       name = "Global Docker Forgejo Actions Runner";
diff --git a/config/hosts/hydra/configuration.nix b/config/hosts/hydra/configuration.nix
new file mode 100644
index 0000000..a4c612e
--- /dev/null
+++ b/config/hosts/hydra/configuration.nix
@@ -0,0 +1,9 @@
+{ ... }:
+
+{
+  networking = {
+    hostName = "hydra";
+  };
+
+  system.stateVersion = "24.05";
+}
diff --git a/config/hosts/hydra/default.nix b/config/hosts/hydra/default.nix
new file mode 100644
index 0000000..f621711
--- /dev/null
+++ b/config/hosts/hydra/default.nix
@@ -0,0 +1,11 @@
+{ ... }:
+
+{
+  imports = [
+    ./configuration.nix
+    ./hydra.nix
+    ./networking.nix
+    ./nginx.nix
+    ./nix.nix
+  ];
+}
diff --git a/config/hosts/hydra/hydra.nix b/config/hosts/hydra/hydra.nix
new file mode 100644
index 0000000..f315710
--- /dev/null
+++ b/config/hosts/hydra/hydra.nix
@@ -0,0 +1,15 @@
+{ ... }:
+
+{
+  services.hydra = {
+    enable = true;
+    listenHost = "localhost";
+    port = 3000;
+    hydraURL = "https://hydra.hamburg.ccc.de/";
+    # E-Mail configuration requires some work/investigation still.
+    notificationSender = "no-reply@hydra.hamburg.ccc.de";
+    useSubstitutes = true;
+    minimumDiskFree = 8;
+    minimumDiskFreeEvaluator = 2;
+  };
+}
diff --git a/config/hosts/hydra/networking.nix b/config/hosts/hydra/networking.nix
new file mode 100644
index 0000000..82cec55
--- /dev/null
+++ b/config/hosts/hydra/networking.nix
@@ -0,0 +1,22 @@
+{ ... }:
+
+{
+  networking = {
+    interfaces.net0 = {
+      ipv4.addresses = [
+        {
+          address = "172.31.17.163";
+          prefixLength = 25;
+        }
+      ];
+    };
+    defaultGateway = "172.31.17.129";
+    nameservers = [ "212.12.50.158" "192.76.134.90" ];
+    search = [ "hamburg.ccc.de" ];
+  };
+
+  systemd.network.links."10-net0" = {
+    matchConfig.MACAddress = "BC:24:11:45:7C:D6";
+    linkConfig.Name = "net0";
+  };
+}
diff --git a/config/hosts/hydra/nginx.nix b/config/hosts/hydra/nginx.nix
new file mode 100644
index 0000000..49ca2e1
--- /dev/null
+++ b/config/hosts/hydra/nginx.nix
@@ -0,0 +1,58 @@
+{ config, pkgs, ... }:
+
+let
+  domain = "hydra.hamburg.ccc.de";
+in
+{
+  services.nginx = {
+    enable = true;
+
+    virtualHosts = {
+      "acme-${domain}" = {
+        default = true;
+        enableACME = true;
+        serverName = "${domain}";
+
+        listen = [
+          {
+            addr = "0.0.0.0";
+            port = 31820;
+          }
+        ];
+      };
+
+      "${domain}" = {
+        default = true;
+        forceSSL = true;
+        useACMEHost = "${domain}";
+
+        listen = [
+          {
+            addr = "0.0.0.0";
+            port = 8443;
+            ssl = true;
+            proxyProtocol = true;
+          }
+        ];
+
+        locations."/" = {
+          proxyPass = "http://${config.services.hydra.listenHost}:${builtins.toString config.services.hydra.port}";
+        };
+
+        extraConfig = ''
+          # Make use of the ngx_http_realip_module to set the $remote_addr and
+          # $remote_port to the client address and client port, when using proxy
+          # protocol.
+          # First set our proxy protocol proxy as trusted.
+          set_real_ip_from 172.31.17.140;
+          # Then tell the realip_module to get the addreses from the proxy protocol
+          # header.
+          real_ip_header proxy_protocol;
+        '';
+      };
+    };
+  };
+
+  networking.firewall.allowedTCPPorts = [ 8443 31820 ];
+  networking.firewall.allowedUDPPorts = [ 8443 ];
+}
diff --git a/config/hosts/hydra/nix.nix b/config/hosts/hydra/nix.nix
new file mode 100644
index 0000000..b95e469
--- /dev/null
+++ b/config/hosts/hydra/nix.nix
@@ -0,0 +1,10 @@
+{ ... }:
+
+{
+  # Allow Hydra to fetch flake inputs.
+  nix.settings.allowed-uris = [
+    "github:"
+    "https://github.com/"
+    "https://git.hamburg.ccc.de/"
+  ];
+}
diff --git a/config/hosts/mjolnir/networking.nix b/config/hosts/mjolnir/networking.nix
index 4d4693d..a441814 100644
--- a/config/hosts/mjolnir/networking.nix
+++ b/config/hosts/mjolnir/networking.nix
@@ -1,24 +1,18 @@
 { ... }:
 
 {
-  networking.useDHCP = false;
-
-  services.cloud-init = {
-    enable = true;
-    network.enable = true;
-
-    # Version without ssh of:
-    # https://github.com/NixOS/nixpkgs/blob/3c9db02515ef1d9b6b709fc60ba9a540957f661c/nixos/modules/services/system/cloud-init.nix#L145
-    # So we don't get ssh hostkey regenerations.
-    settings.cloud_config_modules = [
-        "disk_setup"
-        "mounts"
-        "ssh-import-id"
-        "set-passwords"
-        "timezone"
-        "disable-ec2-metadata"
-        "runcmd"
+  networking = {
+    interfaces.net0 = {
+      ipv4.addresses = [
+        {
+          address = "172.31.17.161";
+          prefixLength = 25;
+        }
       ];
+    };
+    defaultGateway = "172.31.17.129";
+    nameservers = [ "212.12.50.158" "192.76.134.90" ];
+    search = [ "hamburg.ccc.de" ];
   };
 
   systemd.network.links."10-net0" = {
diff --git a/config/hosts/public-reverse-proxy/nginx.nix b/config/hosts/public-reverse-proxy/nginx.nix
index 68c30c2..507b71a 100644
--- a/config/hosts/public-reverse-proxy/nginx.nix
+++ b/config/hosts/public-reverse-proxy/nginx.nix
@@ -6,6 +6,22 @@
 { config, pkgs, ... }:
 
 {
+  services.nginx.streamConfig = ''
+    map $ssl_preread_server_name $address {
+        status.ccchh.net 10.31.206.15:8443;
+        status.hamburg.ccc.de 10.31.206.15:8443;
+    }
+
+    # Listen on port 443 as a reverse proxy and use PROXY Protocol for the
+    # upstreams.
+    server {
+        listen 0.0.0.0:443;
+        proxy_pass $address;
+        ssl_preread on;
+        proxy_protocol on;
+    }
+  '';
+
   services.nginx.appendHttpConfig = ''
     map $host $upstream_acme_challenge_host {
         club-assistant.ccchh.net 10.31.208.10;
@@ -19,6 +35,7 @@
         zigbee2mqtt.ccchh.net 10.31.208.25:31820;
         esphome.ccchh.net 10.31.208.24:31820;
         proxmox-backup-server.ccchh.net 10.31.208.28;
+        status.ccchh.net 10.31.206.15:31820;
         default "";
     }
   '';
diff --git a/config/hosts/public-web-static/nginx.nix b/config/hosts/public-web-static/nginx.nix
index b69e60b..9d0e173 100644
--- a/config/hosts/public-web-static/nginx.nix
+++ b/config/hosts/public-web-static/nginx.nix
@@ -1,12 +1,7 @@
 { ... }:
 
 {
-  services.nginx = {
-    enable = true;
-    appendHttpConfig = ''
-      access_log off;
-    '';
-  };
+  services.nginx.enable = true;
 
   networking.firewall.allowedTCPPorts = [ 8443 31820 ];
   networking.firewall.allowedUDPPorts = [ 8443 ];
diff --git a/config/hosts/public-web-static/virtualHosts/c3cat.de.nix b/config/hosts/public-web-static/virtualHosts/c3cat.de.nix
index 95f9b59..ff59fab 100644
--- a/config/hosts/public-web-static/virtualHosts/c3cat.de.nix
+++ b/config/hosts/public-web-static/virtualHosts/c3cat.de.nix
@@ -23,7 +23,7 @@ in {
       ];
     };
 
-    "www.${domain}" = {
+    "$www.${domain}" = {
       forceSSL = true;
       useACMEHost = "${domain}";
 
diff --git a/config/hosts/public-web-static/virtualHosts/cpu.ccc.de.nix b/config/hosts/public-web-static/virtualHosts/cpu.ccc.de.nix
deleted file mode 100644
index d2e779a..0000000
--- a/config/hosts/public-web-static/virtualHosts/cpu.ccc.de.nix
+++ /dev/null
@@ -1,118 +0,0 @@
-{ ... }:
-
-let
-  domain = "cpu.ccc.de";
-  dataDir = "/var/www/${domain}";
-  deployUser = "cpuccc-website-deploy";
-in
-{
-  security.acme.certs."cpu.ccc.de".extraDomainNames = [
-    "lokal.ccc.de"
-    "local.ccc.de"
-  ];
-
-  services.nginx.virtualHosts = {
-    "acme-${domain}" = {
-      enableACME = true;
-      serverName = "${domain}";
-
-      listen = [
-        {
-          addr = "0.0.0.0";
-          port = 31820;
-        }
-      ];
-    };
-
-    # https://git.hamburg.ccc.de/CCCHH/cpu.ccc.de/src/branch/main/nginx.conf
-    "${domain}" = {
-      forceSSL = true;
-      useACMEHost = "${domain}";
-
-      listen = [
-        {
-          addr = "0.0.0.0";
-          port = 8443;
-          ssl = true;
-          proxyProtocol = true;
-        }
-      ];
-
-      root = "${dataDir}";
-
-      extraConfig = ''
-        index index.html;
-        default_type text/plain;
-
-        # Make use of the ngx_http_realip_module to set the $remote_addr and
-        # $remote_port to the client address and client port, when using proxy
-        # protocol.
-        # First set our proxy protocol proxy as trusted.
-        set_real_ip_from 172.31.17.140;
-        # Then tell the realip_module to get the addreses from the proxy protocol
-        # header.
-        real_ip_header proxy_protocol;
-
-        port_in_redirect off;
-      '';
-
-      locations."/" = {
-        tryFiles = "$uri $uri/ =404";
-
-        extraConfig = ''
-          location /feed/ {
-            default_type application/rss+xml;
-            types {
-              text/xml application/rss+xml;
-            }
-          }
-
-          location /rss {
-            default_type application/rss+xml;
-          }
-        '';
-      };
-    };
-
-    "lokal.ccc.de" = {
-      forceSSL = true;
-      useACMEHost = "cpu.ccc.de";
-      serverAliases = [
-        "local.ccc.de"
-      ];
-
-      listen = [{
-        addr = "0.0.0.0";
-        port = 8443;
-        ssl = true;
-        proxyProtocol = true;
-      }];
-
-      locations."/".return = "302 https://cpu.ccc.de";
-
-      extraConfig = ''
-        # Make use of the ngx_http_realip_module to set the $remote_addr and
-        # $remote_port to the client address and client port, when using proxy
-        # protocol.
-        # First set our proxy protocol proxy as trusted.
-        set_real_ip_from 172.31.17.140;
-        # Then tell the realip_module to get the addreses from the proxy protocol
-        # header.
-        real_ip_header proxy_protocol;
-      '';
-    };
-  };
-
-  systemd.tmpfiles.rules = [
-    "d ${dataDir} 0755 ${deployUser} ${deployUser}"
-  ];
-
-  users.users."${deployUser}" = {
-    isNormalUser = true;
-    group = "${deployUser}";
-    openssh.authorizedKeys.keys = [
-      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOnO7g/7mVVKnvkszto8m3nPljO/6qQc/34aEbrhKOvn deploy key for cpu.ccc.de"
-    ];
-  };
-  users.groups."${deployUser}" = { };
-}
diff --git a/config/hosts/public-web-static/virtualHosts/default.nix b/config/hosts/public-web-static/virtualHosts/default.nix
index 3532c25..793829a 100644
--- a/config/hosts/public-web-static/virtualHosts/default.nix
+++ b/config/hosts/public-web-static/virtualHosts/default.nix
@@ -4,7 +4,6 @@
   imports = [
     ./branding-resources.hamburg.ccc.de.nix
     ./c3cat.de.nix
-    ./cpu.ccc.de.nix
     ./cryptoparty-hamburg.de.nix
     ./element-admin.hamburg.ccc.de.nix
     ./element.hamburg.ccc.de.nix
diff --git a/config/hosts/public-web-static/virtualHosts/hamburg.ccc.de.nix b/config/hosts/public-web-static/virtualHosts/hamburg.ccc.de.nix
index 1c967c9..8277b5f 100644
--- a/config/hosts/public-web-static/virtualHosts/hamburg.ccc.de.nix
+++ b/config/hosts/public-web-static/virtualHosts/hamburg.ccc.de.nix
@@ -17,7 +17,6 @@
     "hamburg.ccc.de" = {
       forceSSL = true;
       useACMEHost = "hamburg.ccc.de";
-      default = true;
 
       listen = [
         {
diff --git a/config/hosts/status/configuration.nix b/config/hosts/status/configuration.nix
new file mode 100644
index 0000000..c36dc63
--- /dev/null
+++ b/config/hosts/status/configuration.nix
@@ -0,0 +1,10 @@
+{ ... }:
+
+{
+  networking = {
+    hostName = "status";
+    domain = "z9.ccchh.net";
+  };
+
+  system.stateVersion = "24.05";
+}
diff --git a/config/hosts/status/default.nix b/config/hosts/status/default.nix
new file mode 100644
index 0000000..d8644c5
--- /dev/null
+++ b/config/hosts/status/default.nix
@@ -0,0 +1,10 @@
+{ ... }:
+
+{
+  imports = [
+    ./configuration.nix
+    ./networking.nix
+    ./nginx.nix
+    ./uptime-kuma.nix
+  ];
+}
diff --git a/config/hosts/status/networking.nix b/config/hosts/status/networking.nix
new file mode 100644
index 0000000..0bff4b5
--- /dev/null
+++ b/config/hosts/status/networking.nix
@@ -0,0 +1,29 @@
+{ ... }:
+
+{
+  networking = {
+    interfaces.net0 = {
+      ipv4.addresses = [
+        {
+          address = "10.31.206.15";
+          prefixLength = 23;
+        }
+      ];
+      ipv6.addresses = [
+        {
+          address = "2a07:c481:1:ce::a";
+          prefixLength = 64;
+        }
+      ];
+    };
+    defaultGateway = "10.31.206.1";
+    defaultGateway6 = "2a07:c481:1:ce::1";
+    nameservers = [ "10.31.206.1" "2a07:c481:1:ce::1" ];
+    search = [ "z9.ccchh.net" ];
+  };
+
+  systemd.network.links."10-net0" = {
+    matchConfig.MACAddress = "BC:24:11:79:D3:E1";
+    linkConfig.Name = "net0";
+  };
+}
diff --git a/config/hosts/status/nginx.nix b/config/hosts/status/nginx.nix
new file mode 100644
index 0000000..8eff61c
--- /dev/null
+++ b/config/hosts/status/nginx.nix
@@ -0,0 +1,149 @@
+# Sources for this configuration:
+# - https://github.com/louislam/uptime-kuma/wiki/Reverse-Proxy
+
+{ config, ... }:
+
+{
+  services.nginx = {
+    enable = true;
+
+    virtualHosts = {
+      "status.hamburg.ccc.de" = {
+        forceSSL = true;
+        enableACME = true;
+        serverName = "status.hamburg.ccc.de";
+
+        listen = [
+          {
+            addr = "[::]";
+            port = 80;
+          }
+          {
+            addr = "[::]";
+            port = 443;
+            ssl = true;
+          }
+        ];
+
+        locations."/" = {
+          proxyPass = "http://localhost:3001";
+          proxyWebsockets = true;
+        };
+      };
+      "status-proxyprotocol.hamburg.ccc.de" = {
+        forceSSL = true;
+        useACMEHost = "status.hamburg.ccc.de";
+        serverName = "status.hamburg.ccc.de";
+
+        listen = [
+          {
+            addr = "0.0.0.0";
+            port = 8443;
+            ssl = true;
+            proxyProtocol = true;
+          }
+        ];
+
+        locations."/" = {
+          proxyPass = "http://localhost:3001";
+          proxyWebsockets = true;
+        };
+
+        extraConfig = ''
+          # Make use of the ngx_http_realip_module to set the $remote_addr and
+          # $remote_port to the client address and client port, when using proxy
+          # protocol.
+          # First set our proxy protocol proxy as trusted.
+          set_real_ip_from 10.31.206.11;
+          # Then tell the realip_module to get the addreses from the proxy protocol
+          # header.
+          real_ip_header proxy_protocol;
+        '';
+      };
+      "status.ccchh.net" = {
+        forceSSL = true;
+        useACMEHost = "status.hamburg.ccc.de";
+        serverName = "status.ccchh.net";
+
+        listen = [
+          {
+            addr = "[::]";
+            port = 80;
+          }
+          {
+            addr = "[::]";
+            port = 443;
+            ssl = true;
+          }
+        ];
+
+        globalRedirect = "status.hamburg.ccc.de";
+        redirectCode = 307;
+      };
+      "status-proxyprotocol.ccchh.net" = {
+        forceSSL = true;
+        useACMEHost = "status.hamburg.ccc.de";
+        serverName = "status.ccchh.net";
+
+        listen = [
+          {
+            addr = "0.0.0.0";
+            port = 8443;
+            ssl = true;
+            proxyProtocol = true;
+          }
+        ];
+
+        globalRedirect = "status.hamburg.ccc.de";
+        redirectCode = 307;
+
+        extraConfig = ''
+          # Make use of the ngx_http_realip_module to set the $remote_addr and
+          # $remote_port to the client address and client port, when using proxy
+          # protocol.
+          # First set our proxy protocol proxy as trusted.
+          set_real_ip_from 10.31.206.11;
+          # Then tell the realip_module to get the addreses from the proxy protocol
+          # header.
+          real_ip_header proxy_protocol;
+        '';
+      };
+      "status.z9.ccchh.net" = {
+        forceSSL = true;
+        useACMEHost = "status.hamburg.ccc.de";
+        serverName = "status.z9.ccchh.net";
+
+        listen = [
+          {
+            addr = "0.0.0.0";
+            port = 80;
+          }
+          {
+            addr = "[::]";
+            port = 80;
+          }
+          {
+            addr = "0.0.0.0";
+            port = 443;
+            ssl = true;
+          }
+          {
+            addr = "[::]";
+            port = 443;
+            ssl = true;
+          }
+        ];
+
+        globalRedirect = "status.hamburg.ccc.de";
+        redirectCode = 307;
+      };
+    };
+  };
+
+  security.acme.certs."status.hamburg.ccc.de".extraDomainNames = [
+    "status.ccchh.net"
+    "status.z9.ccchh.net"
+  ];
+
+  networking.firewall.allowedTCPPorts = [ 80 443 8443 ];
+}
diff --git a/config/hosts/status/uptime-kuma.nix b/config/hosts/status/uptime-kuma.nix
new file mode 100644
index 0000000..02411f2
--- /dev/null
+++ b/config/hosts/status/uptime-kuma.nix
@@ -0,0 +1,7 @@
+{ ... }:
+
+{
+  services.uptime-kuma = {
+    enable = true;
+  };
+}
diff --git a/deployment_configuration.json b/deployment_configuration.json
index 1bb46e7..9c2f99a 100644
--- a/deployment_configuration.json
+++ b/deployment_configuration.json
@@ -16,13 +16,16 @@
       "targetHostname": "forgejo-actions-runner-intern.hamburg.ccc.de"
     },
     "mjolnir": {
-      "targetHostname": "mjolnir.hosts.hamburg.ccc.de"
+      "targetHostname": "mjolnir-intern.hamburg.ccc.de"
     },
     "woodpecker": {
       "targetHostname": "woodpecker-intern.hamburg.ccc.de"
     },
     "penpot": {
       "targetHostname": "penpot-intern.hamburg.ccc.de"
+    },
+    "hydra": {
+      "targetHostname": "hydra-intern.hamburg.ccc.de"
     }
   }
 }
diff --git a/flake.lock b/flake.lock
index 3230d75..76a3fc3 100644
--- a/flake.lock
+++ b/flake.lock
@@ -19,27 +19,27 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1768621446,
-        "narHash": "sha256-6YwHV1cjv6arXdF/PQc365h1j+Qje3Pydk501Rm4Q+4=",
+        "lastModified": 1761173472,
+        "narHash": "sha256-m9W0dYXflzeGgKNravKJvTMR4Qqa2MVD11AwlGMufeE=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "72ac591e737060deab2b86d6952babd1f896d7c5",
+        "rev": "c8aa8cc00a5cb57fada0851a038d35c08a36a2bb",
         "type": "github"
       },
       "original": {
         "owner": "nixos",
-        "ref": "nixos-25.11",
+        "ref": "nixos-25.05",
         "repo": "nixpkgs",
         "type": "github"
       }
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1768661221,
-        "narHash": "sha256-MJwOjrIISfOpdI9x4C+5WFQXvHtOuj5mqLZ4TMEtk1M=",
+        "lastModified": 1761349956,
+        "narHash": "sha256-tH3wHnOJms+U4k/rK2Nn1RfBrhffX92jLP/2VndSn0w=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "3327b113f2ef698d380df83fbccefad7e83d7769",
+        "rev": "02f2cb8e0feb4596d20cc52fda73ccee960e3538",
         "type": "github"
       },
       "original": {
@@ -64,11 +64,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1768709255,
-        "narHash": "sha256-aigyBfxI20FRtqajVMYXHtj5gHXENY2gLAXEhfJ8/WM=",
+        "lastModified": 1760998189,
+        "narHash": "sha256-ee2e1/AeGL5X8oy/HXsZQvZnae6XfEVdstGopKucYLY=",
         "owner": "Mic92",
         "repo": "sops-nix",
-        "rev": "5e8fae80726b66e9fec023d21cd3b3e638597aa9",
+        "rev": "5a7d18b5c55642df5c432aadb757140edfeb70b3",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index e976c25..be9e8fb 100644
--- a/flake.nix
+++ b/flake.nix
@@ -5,7 +5,7 @@
     # Use the NixOS small channels for nixpkgs.
     # https://nixos.org/manual/nixos/stable/#sec-upgrading
     # https://github.com/NixOS/nixpkgs
-    nixpkgs.url = "github:nixos/nixpkgs/nixos-25.11";
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-25.05";
     nixpkgs-unstable.url = "github:nixos/nixpkgs/nixpkgs-unstable";
 
     # # Add nixos-generators as an input.
@@ -147,6 +147,7 @@
           ];
           specialArgs = {
             inherit authorizedKeysRepo;
+            inherit pkgs-unstable;
           };
         };
 
@@ -200,6 +201,16 @@
           ];
         };
 
+        status = nixpkgs.lib.nixosSystem {
+          inherit system specialArgs;
+          modules = [
+            self.nixosModules.common
+            self.nixosModules.proxmox-vm
+            sops-nix.nixosModules.sops
+            ./config/hosts/status
+          ];
+        };
+
         penpot = nixpkgs.lib.nixosSystem {
           inherit system specialArgs;
           modules = [
@@ -210,6 +221,16 @@
             ./config/hosts/penpot
           ];
         };
+
+        hydra = nixpkgs.lib.nixosSystem {
+          inherit system specialArgs;
+          modules = [
+            self.nixosModules.common
+            self.nixosModules.proxmox-vm
+            self.nixosModules.prometheus-exporter
+            ./config/hosts/hydra
+          ];
+        };
       };
 
       # packages.x86_64-linux = {
@@ -238,5 +259,10 @@
       # };
 
       formatter.x86_64-linux = nixpkgs.legacyPackages.x86_64-linux.nixpkgs-fmt;
+
+      hydraJobs = {
+        inherit (self) packages;
+        nixosConfigurations = builtins.mapAttrs (name: value: value.config.system.build.toplevel) self.nixosConfigurations;
+      };
     };
 }