initial commit

disko/btrfs-legacy.nix

@@ -0,0 +1,30 @@
+{ device }:
+
+{
+  disk.main = {
+    type = "disk";
+    inherit device;
+
+    content = {
+      type = "msdos";
+      partitions = {
+        root = {
+          size = "100%";
+          content = {
+            type = "btrfs";
+            extraArgs = [ "-f" ];
+            subvolumes = {
+              "@root" = { mountpoint = "/"; };
+              "@nix" = { mountpoint = "/nix"; };
+              "@var" = { mountpoint = "/var"; };
+              "@docker" = { mountpoint = "/var/lib/docker"; };
+              "@home" = { mountpoint = "/home"; };
+              "@snapshots" = { mountpoint = "/.snapshots"; };
+            };
+          };
+        };
+      };
+    };
+  };
+}
+

flake.nix

@@ -0,0 +1,36 @@
+{
+    description = "NixOS server fleet";
+
+    inputs = {
+        nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.11";
+        disko.url = "github:nix-community/disko";
+    };
+
+    outputs = { self, nixpkgs }:
+    let
+        system = "x86_64-linux";
+        release = "25.11";
+        mainDisk = "/dev/sda";
+        myUser = "victor";
+    in {
+        nixosConfigurations = {
+            isengard = nixpkgs.lib.nixosSystem {
+                inherit system;
+                specialArgs = { inherit release mainDisk myUser; };
+                modules = [
+                    inputs.disko.nixosModules.disko
+
+                    ./hosts/isengard.nix
+                    ./modules/base.nix
+                    ./modules/docker.nix
+
+                    ({ ... }: {
+                        disko.devices = import ./disko/btrfs-legacy.nix {
+                            device = mainDisk; 
+                        };
+                    })
+                ];
+            };
+        };
+    };
+}

hosts/isengard.nix

@@ -0,0 +1,25 @@
+{ config, pkgs, myUser, release, ... }:
+
+{
+    networking.hostName = "isengard";
+
+    time.timeZone = "Europe/Bucharest";
+
+    users.users.myUser = {
+        isNormalUser = true;
+        extraGroups = [ "wheel" "docker" ];
+        openssh.authorizedKeys.keys = [
+            "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOiNyGO4RAxSdxvn2ZIBZ2Ze4iVVMrBNmu/V9JO70PoT victor@battleship"
+        ];
+    };
+
+    networking.useDHCP = true;
+
+    services.openssh = {
+        enable = true;
+        settings.PasswordAuthentication = false;
+    };
+
+    system.stateVersion = release;
+}
+

modules/base.nix

@@ -0,0 +1,20 @@
+{ config, pkgs, mainDisk, ... }:
+
+{
+    nix.settings = {
+        experimental-features = [ "nix-command" "flakes" ];
+        auto-optimise-store = true;
+    };
+
+    boot.loader.grub = {
+        enable = true;
+        device = mainDisk;
+    };
+
+    environment.systemPackages = with pkgs; [
+        git
+        curl
+        htop
+        tmux
+    ];
+}

modules/docker.nix

@@ -0,0 +1,10 @@
+{ config, myUser, ... }:
+
+{
+    virtualization.docker.rootless = {
+        enable = true;
+        setSocketVariable = true;
+        storageDriver = "btrfs";
+        users.users.myUser.extraGroups = [ "docker" ];
+    }
+}