hosts split in folders

hosts/git/default.nix

@@ -0,0 +1,67 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+let
+  generatedAliases = pkgs.writeText "generated-aliases" (
+    lib.concatStringsSep "\n" (
+      lib.mapCartesianProduct
+        ({ aliases, domain }: "${aliases}@${domain}  root@test.htw.stura-dresden.de")
+        {
+          aliases = [
+            "abuse"
+            "hostmaster"
+            "noreply"
+            "postmaster"
+            "webmaster"
+          ];
+          domain = config.mailserver.domains;
+        }
+    )
+  );
+
+in
+{
+  imports = [
+    ./hardware-configuration.nix
+  ];
+
+  networking.hostName = "git";
+  networking.domain = "test.htw.stura-dresden.de";
+  networking.interfaces.ens18.ipv4.addresses = [
+    {
+      address = "167.235.225.23";
+      prefixLength = 32;
+    }
+  ];
+
+  networking.interfaces.ens18.ipv6.addresses = [
+    {
+      address = "2a01:4f8:c012:6bd7::1";
+      prefixLength = 32;
+    }
+  ];
+  networking.defaultGateway.address = "172.31.1.1";
+  networking.nameservers = [
+    "9.9.9.9"
+    "1.1.1.1"
+  ];
+
+  services.openssh.enable = true;
+
+  # virtualisation.docker.enable = true;
+  security.acme.acceptTerms = true;
+  security.acme.defaults.email = "cert@stura.htw-dresden.de";
+
+  networking.firewall.allowedTCPPorts = [
+    25
+    80
+    443
+    597
+  ];
+
+  system.stateVersion = "24.11";
+
+}

hosts/git/hardware-configuration.nix

@@ -0,0 +1,38 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{
+  config,
+  lib,
+  pkgs,
+  modulesPath,
+  ...
+}:
+
+{
+  imports = [
+    (modulesPath + "/profiles/qemu-guest.nix")
+  ];
+
+  boot.initrd.availableKernelModules = [
+    "ata_piix"
+    "uhci_hcd"
+    "virtio_pci"
+    "virtio_scsi"
+    "sd_mod"
+    "sr_mod"
+  ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ ];
+  boot.extraModulePackages = [ ];
+
+  # fileSystems."/" =
+  #   {
+  #     device = "/dev/sda1";
+  #     fsType = "ext4";
+  #   };
+
+  # swapDevices = [ ];
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+}

hosts/git/hetzner-disk.nix

@@ -0,0 +1,56 @@
+{
+  disko.devices = {
+    disk = {
+      main = {
+        type = "disk";
+        device = "/dev/sda";
+        content = {
+          type = "gpt";
+          partitions = {
+            boot = {
+              size = "1M";
+              type = "EF02"; # for grub MBR
+            };
+            ESP = {
+              priority = 1;
+              name = "ESP";
+              start = "1M";
+              end = "512M";
+              type = "EF00";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+                mountOptions = [ "umask=0077" ];
+              };
+            };
+            root = {
+              size = "100%";
+              content = {
+                type = "btrfs";
+                extraArgs = [ "-f" ]; # Override existing partition
+                subvolumes = {
+                  "/rootfs" = {
+                    mountpoint = "/";
+                  };
+                  "/home" = {
+                    mountOptions = [ "compress=zstd" ];
+                    mountpoint = "/home";
+                  };
+                  # Sub(sub)volume doesn't need a mountpoint as its parent is mounted
+                  "/nix" = {
+                    mountOptions = [
+                      "compress=zstd"
+                      "noatime"
+                    ];
+                    mountpoint = "/nix";
+                  };
+                };
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}