Create backuphost Bragi

nixos/machines/bragi/configuration.nix

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+{
+  imports = [
+    ./hardware-configuration.nix
+    ../../roles
+    ../../roles/hardware.nix
+    ./network.nix
+  ];
+
+  # System configuration here
+  networking.hostName = "bragi";
+  system.stateVersion = "23.11";
+}

nixos/machines/bragi/hardware-configuration.nix

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+{lib, ...}: {
+  imports = [];
+
+  fileSystems."/" = {
+    device = "gha-root";
+    fsType = "tmpfs";
+    options = ["size=1G" "mode=755"];
+  };
+  fileSystems."/persist" = {
+    device = "/dev/disk/by-uuid/"; #TODO
+    fsType = "btrfs";
+    options = ["subvol=persist"];
+    neededForBoot = true;
+  };
+  fileSystems."/boot" = {
+    device = "/dev/disk/by-uuid/"; #TODO
+    fsType = "ext4";
+  };
+  fileSystems."/nix" = {
+    device = "/dev/disk/by-uuid/"; #TODO
+    fsType = "btrfs";
+    options = ["subvol=nix"];
+  };
+
+  swapDevices = [{device = "/dev/disk/by-uuid/";}]; #TODO
+
+  nix.settings.max-jobs = lib.mkDefault 4;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+}

nixos/machines/bragi/network.nix

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+# We sohuld put that config somewhere in roles and give it a parameter or something,
+# everyone gets the same nameserver and the same prefixLength and address vs defaultGateway alsways
+# depend on the same thing
+{
+  imports = [];
+  networking = {
+    interfaces.enp4s0f1.ipv4.addresses = [
+      {
+        address = "192.168.1.11";
+        prefixLength = 24;
+      }
+    ];
+    defaultGateway = "192.168.1.137";
+    nameservers = ["130.83.2.22" "130.83.56.60" "130.83.22.60" "130.82.22.63"];
+  };
+}